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US3538464A - Multiple pin connector having ferrite core stacked capacitor filter - Google Patents

Multiple pin connector having ferrite core stacked capacitor filter Download PDF

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US3538464A
US3538464A US3538464DA US3538464A US 3538464 A US3538464 A US 3538464A US 3538464D A US3538464D A US 3538464DA US 3538464 A US3538464 A US 3538464A
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electrodes
laminate
electrode
holes
means
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James J Walsh
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Erie Technological Products Inc
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Erie Technological Products Inc
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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01RLINE CONNECTORS; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00-H01R33/00
    • H01R13/66Structural association with built-in electrical component
    • H01R13/719Structural association with built-in electrical component specially adapted for high frequency, e.g. with filters
    • H01R13/7195Structural association with built-in electrical component specially adapted for high frequency, e.g. with filters with planar filters with openings for contacts
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01RLINE CONNECTORS; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00-H01R33/00
    • H01R13/62Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/629Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
    • H01R13/631Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances for engagement only
    • H01R13/6315Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances for engagement only allowing relative movement between coupling parts, e.g. floating connection

Description

J. J. WALSH MULTIPLE PIN CONNECTOR HAVING FERRITE CORE STACKED CAPACITOR FILTER Original Filed Sept. 12, 1966 Nov. 3, 1970 I: 1 kw ATTORNEY United States Patent 3,538,464 MULTIPLE PIN CONNECTOR HAVING FERRITE CORE STACKED CAPACITOR FILTER James J. Walsh, Erie, Pa., assignor to Erie Technological Products, Inc., Erie, Pa., a corporation of Pennsylvania Continuation-impart of applications Ser. No. 306,406 and Ser. No. 306,407, both filed Aug. 20, 1963, now Patent Nos. 3,275,954 and 3,275,953, which is a continuation of applications Ser. No. 578,577, Sept. 12, 1966, and Ser. No. 805,099, Feb. 18, 1969, both now abandoned. This application Oct. 13, 1969, Ser. No.

Int. Cl. H01h 7/14; H01g /01 US. Cl. 333-79 12 Claims ABSTRACT OF THE DISCLOSURE This application is a continuation in part of applications Ser. No. 306,406 and Ser. No. 306,407, now Pats. 3,275,954 and 3,275,953 and a continuation of applications Ser. No. 578,577, filed Sept. 12, 1966, abandoned, and Ser. No. 805,099, filed Feb. 18, 1969, now abandoned.

This invention improves the combined connector and filter assembly by sandwiching a multiple capacitor laminate or monolith between the parts of the connector housing. This permits a reduction in size due to the compact construction provided by the laminate. In a preferred form, there are several capacitor laminates alternating with ferrite plates to provide a filter of the desired number of stages.

In the drawing, FIG. 1 is an elevation of a connector, partly broken away, FIG. 2 is an exploded view of one of the capacitor laminates used in the connector, and FIG. 3 is a section through a preferred form of filter having a ferrite plate sandwiched between two capacitor laminates.

The connector shown in FIG. 1 has a plurality of pins, each representing a circuit. The male connector is shown in FIG. 1. The female counterpart is of conventional design. The term pin is used to designate either a male or a female connector.

The connector has a metallic housing 1 suitably supporting members 2 and 3- of insulating material bolted or otherwise fastened together. The members 2, 3 have aligned sockets 4, 5 each associated with a pin 6. In the bottoms 7, 8 of the sockets are aligned clearance openings 9, 10 which provide clearance so the pins can float to facilitate insertion and removal. The pins are provided with thrust collars 11, 12 respectively larger than the openings 9, 10. The collar '11 may be integral with the pin 6 and the collar 12 may be suitably fastened to the pm.

In order to reduce radio frequency interference, there is sandwiched between the parts 2 and 3 a filter assembly comprising upper and lower multiple capacitor laminates 13, 14 and an intermediate ferrite plate 15 held together by the peripheral metal band 16 which serves as the ground terminal for the filter assembly and is usually electrically connected (for example, by spring contact 116a) to the metallic housing 1.

3,538,464 Patented Nov. 3, 1970 "ice In a preferred form, the multiple capacitor laminates 13 and 14 are of similar construction and comprise a plurality of films of green ceramic from 2-3 mils thick suitably electroded and stacked one on top of the other and fired into a unitary ceramic body in which the films coalesce to form a sealed unitary structure. The dielectric films are too thin to be illustrated in FIG. 1 and are, accordingly, illustrated in FIGS. 2 and 3.

The particular multiple capacitor laminate shown in FIGS. 2 and 3 comprises four films 17, 18, 19, 20, although obviously a different number of films could be used. As will be explained hereafter, film 18 carries a ground electrode and films 17 and 19 carry live electrodes in capacity relation to the ground electrode. Less capacity may be obtained by omitting the film 17. More capacity may be obtained by adding another film 18 below the film 17 or by further stacking in alternating relation additional films carrying ground and live electrodes in accordance with the principles of multiple electrode capacitors. These films are made of suitable dielectric ceramic, for example, one of the titanates, and have a thickness of from 2-3 mils, although thicker films may be used for higher voltage applications. The film 117 has on its upper surface a plurality of metal paint live electrodes 21, each extending to the edge of a hole 22 in alignment with the pin 6 and spaced from each other so as to be electrically separate. Between adjacent electrodes 21 is a grid electrode 23 which is spaced from the electrodes 21. The grid electrode 23 extends to the outer edge of the film 17. The purpose of the grid electrode 23 is to provide a ground potential between adjacent electrodes 21 to eliminate cross-coupling between adjacent electrodes. The electrode 23 may be omitted if its function is not desired. The film 19 is a duplicate of film 17 and corresponding parts are indicated by the same reference numerals. The film 18 has on its upper surface a metal paint ground electrode 24 extending over the entire upper surface except for margins 25 about holes 26 which register with the holes 22 in the films 17 and 19. Each of the electrodes 21 of the films 17 and 19 (the live electrodes) is in capacity relation to the ground electrode 24 of the film 18. The film 20 has on its upper surface a plurality of metallized coatings 27, each encircling one of the holes 28 which register with the holes 22 and 26 in the other films. The purpose of the coatings 27 is for making electrical connection to the pins and to the live electrodes 21, for example, by flexible conductive rubber sleeves 29 or other connection. Around the periphery of the film 20 is a metallized border 30 by which a soldered connection 31 may be made to a flange 32 on the metal band or ground terminal 16.

In the manufacture of the multiple capacitor laminate, the electrodes 21, 23, 24 are applied to the green ceramic in the form of a high temperature metal paint such as platinum, palladium, etc. and the films are stacked one on top of the other with the holes 22, 26, 28 in register and fired. During firing, the ceramic films coalesce into a unitary ceramic structure or monolith. After the firing, the metallized coatings 27 and 30* may be applied in the form of a silver paint. A silver paint coating 33' may also be applied to the bores of the holes 22, 26 and 28 and another silver paint coating 34 may be applied to the peripheral edge of the laminate. The silver paint coatings are cured in an oven. The silver paint coating 33 connects the live electrodes 21 in parallel. The silver paint coating 34 connects the ground electrodes 23 and 24 in parallel.

After firing and applying the silver paint coatings 27, 33 and 34, the multiple capacitor laminate is a compact sealed structure having holes aligned with the pins 6. The multiple capacitor laminate has some filtering effect to reduce radio frequency interference. When so used, the

coating 34 is the ground terminal and the coatings 33 are the live terminals of the filter. To improve the filtering effect, an inductive means such as a lossy ferrite plate is sandwiched between the two multiple capacitor laminates 13, 14 and the assembly is held together by ground terminal 16. The ferrite plate has holes 35 in alignment with the holes in the laminate. The unitary ferrite plate 15- is a convenient construction. It may be replaced by several smaller ferrite plates or by individual ferrite beads telescoped over the pins 6. The active part of the ferrite is the section encircling each pin having an area corresponding to that of a bead.

What is claimed is:

1. A connector, a multiple capacitor filter unit comprising a laminate of a plurality of ceramic dielectric films coalesced into a unitary structure and having a plurality of holes speced from each other and extending through the films of the laminate in the thickness direction, live and ground electrode means on and in capacity relation to each other through films of the laminate, the ground electrode means being margined from the holes and extending to the peripheral edge of the laminate, the live electrode means having a plurality of separate portions electrically insulated from each other respectively extending to the edges of separate holes to provide a plurality of separate capacitors, a conductive coating overlying and encircling the peripheral edge of the laminate and connected to said ground electrode means, conductive coatings overlying the edges of the holes and connected to the respective live electrode means, means of insulating providing sockets on opposite sides of said laminate and aligned with said holes, a pin extending through each hole and through the associated sockets, an electrical connection from each pin to the conductive coating overlying the edges of the hole through which the pin extends, and an electrical connection to the conductive coating overlying and encircling the peripheral edge of the laminate.

2. The connector of claim 1 in which the filter unit comprises two laminates of similar construction, the laminates being spaced from each other with aligned holes, and inductive means in the space between the laminate having holes through which the respective pins extend, said inductive means having separate active portions encircling the respective pins.

3. The connector of claim 2 in which the inductive means comprises ferrite beads telescoped over the pins.

4. The connector of claim 2 in which the sockets and holes provide clearance around the pins so the pins can tfloat to facilitate insertion and removal.

5. The connector of claim 4 in which the electrical connection from one of the pins to its live electrode is a flexible conductive rubber sleeve.

6. A multiple feed through filter comprising a first laminate having a plurality of ceramic dielectric films coalesced into a unitary structure and having a plurality of registering holes extending through the films of the laminate in the thickness direction, and ground and live electrode means on and in capacity relation to each other through films of the laminate, the ground electrode means being margined from the holes and extending to the peripheral edge of the laminate, the live electrode means having a plurality of separate portions electrically insulated from each other respectively extending to the edges of separate holes to provide a plurality of separate capacitors, a conductive coating overlying and encircling the peripheral edge of the laminate and connected to said ground electrode means, conductive coatings overlying the edges of the holes and connected to the respective portions of the live electrode means, a second laminate spaced from the first laminate having a plurality of ceramic films coalesced into a unitary structure, a plurality of holes spaced from each other and extending through the second laminate in the thickness direction, and live and ground electrode means on and in capacity relation to each other through films of the laminate, the ground electrode means of the second laminate being margined from the holes and extending to the peripheral edge of the second laminate, the live electrode means of the second laminate having a plurality of separate portions electrically insulated from each other respectively extending to the edges of separate holes to provide a plurality of separate capacitors, a conductive coating overlying and encircling the peripheral edge of the second laminate and connected to its ground electrode means, conductive coatings overlying the edges of the holes of the second laminate and connected to the respective portions of its live electrode means, the holes of the second laminate registering with the holes in the first laminate, a plurality of conductors each extending through a separate hole in the first laminate and the registering hole in the second laminate and each connected to the conductive coatings on the registering holes through which it extends, inductive means in the space between the laminates having a plurality of active portions each surrounding one of the conductors, and a metal band holding the laminates together and connecting said ground electrode means.

7. The filter of claim 6 in which the inductive means comprises ferrite beads telescoped over the lead wires.

'8. A filter device including an integral capacitive device comprising a unitary ceramic dielectric monolith containing therein is superimposed relationship a first set of parallel capacitor ground electrodes extending in substantially planar form from exterior border to exterior border of the monolith and generally parallel each to others thereof and each such ground electrode having a plurality of areal voids therein, and said monolith and generally parallel each to others thereof and each such ground electrode having a plurality of areal voids therein, and said monolith further containing therein a second set of smaller capacitor elecerodes disposed in parallel relation between electrodes of aid first set but insulated therefrom by respective thin portions of said monolith, and there being between two electrodes of said first set at least two substantially coplanar electrodes of said second set each insulated from the other by said monolith, and a plurality of terminal conductors each extending through aligned ones of the areal voids in said electrodes of the first set and each insulated from the other and from said electrodes of said first set and electrically contacting aligned parallel electrodes of a respective group of electrodes comprised in the said set of smaller electrodes, and means electrically inter-connecting the electrodes of said first set, whereby said monolith contains a plurality of capacitors having a common ground connection and respective other individual terminals, all disposed in a compact spatial arrangement.

9. A filter device according to claim 8, in which guardcircuit conductor means are contained in said monolith disposed in coplanar relationship with respective ones of the electrodes of said second set and encircling and shielding each such electrode from all others thereof and insulated by said monolith from all of said electrodes of said second set of electrodes and from said terminal conductors, said guard-circuit conductor means being electrically connected to the electrodes of said first set.

10. A method of producing a multiple-unit integral capacitive device composed essentially of a monolithic dielectric structure containing a plurality of capacitor units each comprising a plurality of superimposed parallel electrodes of first and second sets thereof, and terminal conductors, said method including the steps of:

forming a plurality of thin rectangular wafer-like sheets of dielectric ceramic greenware;

disposing on one face of each of a first set of said sheets a patterned coat of adherent conductive material extending from border to border thereon but having spaced-apart small areal voids to provide thereon thin capacitor electrodes with spaced areal voids;

disposing on one face of each of a second set of said sheets an array of spaced-apart thin coats of adherent conductive material to provide on each sheet of said second set an array of capacitor electrodes smaller than those on said first set of sheets, and each electrode of said array being areally disposed to register with a respective one of said areal voids when sheets of said first and second sets are superimposed in alternation in a stack;

stacking said first and second sets of sheets in superimposed relationship with coated faces of all of the sheets facing the same direction;

forming holes transversely through the monolithic structure so each hole extends through a middle portion only of each of a respective set of superimposed voids of said first set of sheets;

firing the unitary structure to form a dense rigid monolithic structure; and

applying conductive material over the interior surfaces bounding said holes whereby to electrically interconnect the respective electrodes of said second set of sheets, and separating interconnecting said thin capacitor electrodes.

11. A method as defined in claim 10, including the step of applying a thin conductive stripe between nextadjacent electrodes on the face of each of said second set of ceramic sheets, and electrically connecting the said stripes to the electrodes on said first set of ceramic sheets, whereby to provide a guard means electrostatically isolating next-adjacent ones of the smaller electrodes each from the other.

12. A method as defined in claim 10, including the step of mounting said monolith on a metal bulkhead and electrically connecting said thin capacitor electrodes to said bulkhead.

References Cited UNITED STATES PATENTS 3,160,790 12/1964 Mittler 174-685 3,275,953 9/1966 Coda et a1. 333-79 3,379,943 4/1968 Breedlove 3l726l X 3,426,257 2/1969 Youngquist 3l7-256 HERMAN K. SAALBACH, Primary Examiner T. J. VEZEAV, Assistant Examiner U.S. c1. X.R. 317---256 g

US3538464A 1963-08-20 1969-10-13 Multiple pin connector having ferrite core stacked capacitor filter Expired - Lifetime US3538464A (en)

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US3275954A US3275954A (en) 1963-08-20 1963-08-20 Multiple connector wherein pins have limited movement within housing and each pin has integral low-pass filter
US3275953A US3275953A (en) 1963-08-20 1963-08-20 Multiple pin connector having ferrite bead-capacitor filter
US87000169 true 1969-10-13 1969-10-13

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Cited By (61)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2297503A1 (en) * 1975-01-08 1976-08-06 Bunker Ramo electrical connector filter incorporates
DE2800745A1 (en) * 1977-01-12 1978-07-13 Bunker Ramo electrical connector
DE2810514A1 (en) * 1977-03-14 1978-09-21 Itt Ind Gmbh Deutsche Connectors with interference protection
US4187481A (en) * 1977-12-23 1980-02-05 Bunker Ramo Corporation EMI Filter connector having RF suppression characteristics
US4262268A (en) * 1978-06-22 1981-04-14 Taiyo Yuden Co., Ltd. Composite pi-section LC filter assembly and method of manufacture
US4371226A (en) * 1980-10-20 1983-02-01 International Telephone And Telegraph Corporation Filter connector and method of assembly thereof
EP0091867A1 (en) * 1982-04-08 1983-10-19 Eurofarad Efd Electrical connector device with a removable, modular capacitive filter box
EP0124264A1 (en) * 1983-03-30 1984-11-07 E.I. Du Pont De Nemours And Company Filter connector
US4494092A (en) * 1982-07-12 1985-01-15 The Deutsch Company Electronic Components Division Filter pin electrical connector
EP0137116A2 (en) * 1983-08-31 1985-04-17 Allied Corporation A filter electrical connector
FR2557382A2 (en) * 1983-12-23 1985-06-28 Eurofarad Detachable modular capacitive filtering module for an electrical connection device
FR2557381A1 (en) * 1983-12-23 1985-06-28 Eurofarad Electrical connector device, with detachable modular capacitive filtering module
JPS60183381U (en) * 1985-04-04 1985-12-05
US4643509A (en) * 1984-06-15 1987-02-17 Amp Incorporated Grounding clip for filtered electrical connector
US4682129A (en) * 1983-03-30 1987-07-21 E. I. Du Pont De Nemours And Company Thick film planar filter connector having separate ground plane shield
US4690479A (en) * 1985-10-10 1987-09-01 Amp Incorporated Filtered electrical header assembly
US4741710A (en) * 1986-11-03 1988-05-03 Amphenol Corporation Electrical connector having a monolithic capacitor
US4761147A (en) * 1987-02-02 1988-08-02 I.G.G. Electronics Canada Inc. Multipin connector with filtering
US4789847A (en) * 1986-03-05 1988-12-06 Murata Manufacturing Co., Ltd. Filter connector
US4791391A (en) * 1983-03-30 1988-12-13 E. I. Du Pont De Nemours And Company Planar filter connector having thick film capacitors
US4792310A (en) * 1984-04-11 1988-12-20 Murata Manufacturing Co., Ltd. Connector having filtering function
EP0299563A1 (en) * 1987-07-14 1989-01-18 Connector Systems Technology N.V. Filter unit for connectors
JPH01120805A (en) * 1987-11-04 1989-05-12 Mitsubishi Mining & Cement Co Ltd Composite laminated through-type capacitor and manufacture thereof
JPH0196681U (en) * 1988-11-22 1989-06-27
US4853659A (en) * 1988-03-17 1989-08-01 Amp Incorporated Planar pi-network filter assembly having capacitors formed on opposing surfaces of an inductive member
US4930200A (en) * 1989-07-28 1990-06-05 Thomas & Betts Corporation Method of making an electrical filter connector
US4950185A (en) * 1989-05-18 1990-08-21 Amphenol Corporation Stress isolated planar filter design
US4992060A (en) * 1989-06-28 1991-02-12 Greentree Technologies, Inc. Apparataus and method for reducing radio frequency noise
US4992061A (en) * 1989-07-28 1991-02-12 Thomas & Betts Corporation Electrical filter connector
US4999595A (en) * 1988-01-22 1991-03-12 Murata Manufacturing Co., Ltd. LC filter structure
WO1991006136A1 (en) * 1989-10-12 1991-05-02 Siemens Aktiengesellschaft Filter plug connector
US5039965A (en) * 1990-08-24 1991-08-13 Motorola, Inc. Radio frequency filter feedthrough structure for multilayer circuit boards
US5153540A (en) * 1991-04-01 1992-10-06 Amphenol Corporation Capacitor array utilizing a substrate and discoidal capacitors
US5242318A (en) * 1991-06-14 1993-09-07 Filtec Filtertechnologie Fur Die Elektronikindustrie Gmbh Multipole connector for electronic signal lines
US5287076A (en) * 1991-05-29 1994-02-15 Amphenol Corporation Discoidal array for filter connectors
US5440447A (en) * 1993-07-02 1995-08-08 The Morgan Crucible Company, Plc High temperature feed-through system and method for making same
EP0674363A2 (en) * 1994-01-13 1995-09-27 FILTEC FILTERTECHNOLOGIE FUR DIE ELEKTRONIKINDUSTRIE GmbH Connector with a plurality of terminals and filter arrangement
WO1997020332A1 (en) * 1995-11-27 1997-06-05 Maxwell Laboratories, Inc. Emi filter for human implantable heart defibrillators and pacemakers
US5701665A (en) * 1993-01-19 1997-12-30 The Whitaker Corporation Pi signal frequency filter method of manufacture
US5735884A (en) * 1994-10-04 1998-04-07 Medtronic, Inc. Filtered feedthrough assembly for implantable medical device
US5751539A (en) * 1996-04-30 1998-05-12 Maxwell Laboratories, Inc. EMI filter for human implantable heart defibrillators and pacemakers
US5759197A (en) * 1994-10-04 1998-06-02 Medtronic, Inc. Protective feedthrough
US5838216A (en) * 1996-09-06 1998-11-17 Sunstrand Corporation Common-mode EMI filter
US5867361A (en) * 1997-05-06 1999-02-02 Medtronic Inc. Adhesively-bonded capacitive filter feedthrough for implantable medical device
EP0690528A3 (en) * 1994-06-27 1999-02-03 General Motors Corporation Filter elements having ferroelectric-ferromagnetic composite materials
US5905627A (en) * 1997-09-10 1999-05-18 Maxwell Energy Products, Inc. Internally grounded feedthrough filter capacitor
US6456481B1 (en) 2001-05-31 2002-09-24 Greatbatch-Sierra, Inc. Integrated EMI filter-DC blocking capacitor
US6529103B1 (en) 2000-09-07 2003-03-04 Greatbatch-Sierra, Inc. Internally grounded feedthrough filter capacitor with improved ground plane design for human implant and other applications
US6567259B2 (en) 2001-05-31 2003-05-20 Greatbatch-Sierra, Inc. Monolithic ceramic capacitor with barium titinate dielectric curie point optimized for active implantable medical devices operating at 37° C.
US20030179536A1 (en) * 2002-02-28 2003-09-25 Stevenson Robert A. EMI feedthrough filter terminal assembly for human implant applications utilizing oxide resistant biostable conductive pads for reliable electrical attachments
US6646858B2 (en) * 2001-11-09 2003-11-11 Filtec Filtertechnologie Fuer Die Electronikindustrie Gmbh Capacitor body and a filter plug including a capacitor formed with the capacitor body
US20040201947A1 (en) * 2002-02-28 2004-10-14 Stevenson Robert A. EMI filter capacitors designed for direct body fluid exposure
EP1475863A1 (en) * 2003-05-06 2004-11-10 Itt Manufacturing Enterprises, Inc. Filtered connector
US20050007718A1 (en) * 2003-02-27 2005-01-13 Stevenson Robert A. EMI filter terminal assembly with wire bond pads for human implant applications
US6882248B2 (en) 2000-09-07 2005-04-19 Greatbatch-Sierra, Inc. EMI filtered connectors using internally grounded feedthrough capacitors
US20050197677A1 (en) * 2004-02-12 2005-09-08 Stevenson Robert A. Apparatus and process for reducing the susceptability of active implantable medical devices to medical procedures such as magnetic resonance imaging
US20060028784A1 (en) * 2004-05-10 2006-02-09 Greatbatch-Sierra, Inc. Device to protect an active implantable medical device feedthrough capacitor from stray laser weld strikes, and related manufacturing process
US20060259093A1 (en) * 2003-02-27 2006-11-16 Greatbatch-Sierra, Inc. Hermetic feedthrough terminal assembly with wire bond pads for human implant applications
US7278887B1 (en) 2006-05-30 2007-10-09 John Mezzalingua Associates, Inc. Integrated filter connector
US8062063B2 (en) 2008-09-30 2011-11-22 Belden Inc. Cable connector having a biasing element
US8469739B2 (en) 2011-02-08 2013-06-25 Belden Inc. Cable connector with biasing element

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3160790A (en) * 1962-04-06 1964-12-08 Mittler Sheldon Tubular electric circuits and component mounted thereon
US3275953A (en) * 1963-08-20 1966-09-27 Erie Technological Prod Inc Multiple pin connector having ferrite bead-capacitor filter
US3379943A (en) * 1966-01-17 1968-04-23 American Lava Corp Multilayered electrical capacitor
US3426257A (en) * 1967-10-19 1969-02-04 David Youngquist Multiple capacitor and method of making the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3160790A (en) * 1962-04-06 1964-12-08 Mittler Sheldon Tubular electric circuits and component mounted thereon
US3275953A (en) * 1963-08-20 1966-09-27 Erie Technological Prod Inc Multiple pin connector having ferrite bead-capacitor filter
US3379943A (en) * 1966-01-17 1968-04-23 American Lava Corp Multilayered electrical capacitor
US3426257A (en) * 1967-10-19 1969-02-04 David Youngquist Multiple capacitor and method of making the same

Cited By (97)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2297503A1 (en) * 1975-01-08 1976-08-06 Bunker Ramo electrical connector filter incorporates
DE2800745A1 (en) * 1977-01-12 1978-07-13 Bunker Ramo electrical connector
FR2377716A1 (en) * 1977-01-12 1978-08-11 Bunker Ramo Connector filter assembly
US4144509A (en) * 1977-01-12 1979-03-13 Bunker Ramo Corporation Filter connector
DE2810514A1 (en) * 1977-03-14 1978-09-21 Itt Ind Gmbh Deutsche Connectors with interference protection
FR2384366A1 (en) * 1977-03-14 1978-10-13 Itt filtering device for electric connector
US4126840A (en) * 1977-03-14 1978-11-21 International Telephone And Telegraph Corporation Filter connector
US4187481A (en) * 1977-12-23 1980-02-05 Bunker Ramo Corporation EMI Filter connector having RF suppression characteristics
US4262268A (en) * 1978-06-22 1981-04-14 Taiyo Yuden Co., Ltd. Composite pi-section LC filter assembly and method of manufacture
US4371226A (en) * 1980-10-20 1983-02-01 International Telephone And Telegraph Corporation Filter connector and method of assembly thereof
EP0091867A1 (en) * 1982-04-08 1983-10-19 Eurofarad Efd Electrical connector device with a removable, modular capacitive filter box
US4494092A (en) * 1982-07-12 1985-01-15 The Deutsch Company Electronic Components Division Filter pin electrical connector
US4682129A (en) * 1983-03-30 1987-07-21 E. I. Du Pont De Nemours And Company Thick film planar filter connector having separate ground plane shield
EP0124264A1 (en) * 1983-03-30 1984-11-07 E.I. Du Pont De Nemours And Company Filter connector
US4791391A (en) * 1983-03-30 1988-12-13 E. I. Du Pont De Nemours And Company Planar filter connector having thick film capacitors
EP0137116A3 (en) * 1983-08-31 1986-05-14 Allied Corporation A filter electrical connector
EP0137116A2 (en) * 1983-08-31 1985-04-17 Allied Corporation A filter electrical connector
FR2557382A2 (en) * 1983-12-23 1985-06-28 Eurofarad Detachable modular capacitive filtering module for an electrical connection device
FR2557381A1 (en) * 1983-12-23 1985-06-28 Eurofarad Electrical connector device, with detachable modular capacitive filtering module
US4792310A (en) * 1984-04-11 1988-12-20 Murata Manufacturing Co., Ltd. Connector having filtering function
US4643509A (en) * 1984-06-15 1987-02-17 Amp Incorporated Grounding clip for filtered electrical connector
JPH0117823Y2 (en) * 1985-04-04 1989-05-24
JPS60183381U (en) * 1985-04-04 1985-12-05
US4690479A (en) * 1985-10-10 1987-09-01 Amp Incorporated Filtered electrical header assembly
US4789847A (en) * 1986-03-05 1988-12-06 Murata Manufacturing Co., Ltd. Filter connector
WO1988003719A1 (en) * 1986-11-03 1988-05-19 Amphenol Corporation Electrical connector having a monolithic capacitor
US4741710A (en) * 1986-11-03 1988-05-03 Amphenol Corporation Electrical connector having a monolithic capacitor
US4761147A (en) * 1987-02-02 1988-08-02 I.G.G. Electronics Canada Inc. Multipin connector with filtering
US4931754A (en) * 1987-07-14 1990-06-05 E. I. Du Pont De Nemours And Company Filter unit for connectors having filter capacitors formed on opposing surfaces of a substrate
EP0299563A1 (en) * 1987-07-14 1989-01-18 Connector Systems Technology N.V. Filter unit for connectors
JPH01120805A (en) * 1987-11-04 1989-05-12 Mitsubishi Mining & Cement Co Ltd Composite laminated through-type capacitor and manufacture thereof
JPH0543281B2 (en) * 1987-11-04 1993-07-01 Mitsubishi Materials Corp
US4999595A (en) * 1988-01-22 1991-03-12 Murata Manufacturing Co., Ltd. LC filter structure
US4853659A (en) * 1988-03-17 1989-08-01 Amp Incorporated Planar pi-network filter assembly having capacitors formed on opposing surfaces of an inductive member
JPH0196681U (en) * 1988-11-22 1989-06-27
JPH037901Y2 (en) * 1988-11-22 1991-02-27
US4950185A (en) * 1989-05-18 1990-08-21 Amphenol Corporation Stress isolated planar filter design
US4992060A (en) * 1989-06-28 1991-02-12 Greentree Technologies, Inc. Apparataus and method for reducing radio frequency noise
US4992061A (en) * 1989-07-28 1991-02-12 Thomas & Betts Corporation Electrical filter connector
US4930200A (en) * 1989-07-28 1990-06-05 Thomas & Betts Corporation Method of making an electrical filter connector
WO1991006136A1 (en) * 1989-10-12 1991-05-02 Siemens Aktiengesellschaft Filter plug connector
US5246387A (en) * 1989-10-12 1993-09-21 Siemens Aktiengesellschaft Filter plug connector
US5039965A (en) * 1990-08-24 1991-08-13 Motorola, Inc. Radio frequency filter feedthrough structure for multilayer circuit boards
US5153540A (en) * 1991-04-01 1992-10-06 Amphenol Corporation Capacitor array utilizing a substrate and discoidal capacitors
US5287076A (en) * 1991-05-29 1994-02-15 Amphenol Corporation Discoidal array for filter connectors
US5242318A (en) * 1991-06-14 1993-09-07 Filtec Filtertechnologie Fur Die Elektronikindustrie Gmbh Multipole connector for electronic signal lines
US5701665A (en) * 1993-01-19 1997-12-30 The Whitaker Corporation Pi signal frequency filter method of manufacture
US5440447A (en) * 1993-07-02 1995-08-08 The Morgan Crucible Company, Plc High temperature feed-through system and method for making same
EP0674363A2 (en) * 1994-01-13 1995-09-27 FILTEC FILTERTECHNOLOGIE FUR DIE ELEKTRONIKINDUSTRIE GmbH Connector with a plurality of terminals and filter arrangement
EP0674363A3 (en) * 1994-01-13 1997-07-16 Filtec Filtertechnologie Fur D Connector with a plurality of terminals and filter arrangement.
EP0690528A3 (en) * 1994-06-27 1999-02-03 General Motors Corporation Filter elements having ferroelectric-ferromagnetic composite materials
US5759197A (en) * 1994-10-04 1998-06-02 Medtronic, Inc. Protective feedthrough
US5735884A (en) * 1994-10-04 1998-04-07 Medtronic, Inc. Filtered feedthrough assembly for implantable medical device
WO1997020332A1 (en) * 1995-11-27 1997-06-05 Maxwell Laboratories, Inc. Emi filter for human implantable heart defibrillators and pacemakers
US5751539A (en) * 1996-04-30 1998-05-12 Maxwell Laboratories, Inc. EMI filter for human implantable heart defibrillators and pacemakers
US5838216A (en) * 1996-09-06 1998-11-17 Sunstrand Corporation Common-mode EMI filter
US6031710A (en) * 1997-05-06 2000-02-29 Medtronic, Inc. Adhesively- and solder-bonded capacitive filter feedthrough for implantable medical devices
US5867361A (en) * 1997-05-06 1999-02-02 Medtronic Inc. Adhesively-bonded capacitive filter feedthrough for implantable medical device
US5870272A (en) * 1997-05-06 1999-02-09 Medtronic Inc. Capacitive filter feedthrough for implantable medical device
US5905627A (en) * 1997-09-10 1999-05-18 Maxwell Energy Products, Inc. Internally grounded feedthrough filter capacitor
US6529103B1 (en) 2000-09-07 2003-03-04 Greatbatch-Sierra, Inc. Internally grounded feedthrough filter capacitor with improved ground plane design for human implant and other applications
US6566978B2 (en) 2000-09-07 2003-05-20 Greatbatch-Sierra, Inc. Feedthrough capacitor filter assemblies with leak detection vents
US6882248B2 (en) 2000-09-07 2005-04-19 Greatbatch-Sierra, Inc. EMI filtered connectors using internally grounded feedthrough capacitors
US6456481B1 (en) 2001-05-31 2002-09-24 Greatbatch-Sierra, Inc. Integrated EMI filter-DC blocking capacitor
US6567259B2 (en) 2001-05-31 2003-05-20 Greatbatch-Sierra, Inc. Monolithic ceramic capacitor with barium titinate dielectric curie point optimized for active implantable medical devices operating at 37° C.
US6646858B2 (en) * 2001-11-09 2003-11-11 Filtec Filtertechnologie Fuer Die Electronikindustrie Gmbh Capacitor body and a filter plug including a capacitor formed with the capacitor body
US7535693B2 (en) * 2002-02-28 2009-05-19 Greatbatch-Sierra, Inc. EMI filters designed for direct body fluid exposure
US6765779B2 (en) 2002-02-28 2004-07-20 Greatbatch-Sierra, Inc. EMI feedthrough filter terminal assembly for human implant applications utilizing oxide resistant biostable conductive pads for reliable electrical attachments
US20030213604A1 (en) * 2002-02-28 2003-11-20 Stevenson Robert A. EMI feedthrough filter terminal assembly utilizing hermetic seal for electrical attachment between lead wires and capacitor
US20040201947A1 (en) * 2002-02-28 2004-10-14 Stevenson Robert A. EMI filter capacitors designed for direct body fluid exposure
US20030179536A1 (en) * 2002-02-28 2003-09-25 Stevenson Robert A. EMI feedthrough filter terminal assembly for human implant applications utilizing oxide resistant biostable conductive pads for reliable electrical attachments
US6985347B2 (en) 2002-02-28 2006-01-10 Greatbatch-Sierra, Inc. EMI filter capacitors designed for direct body fluid exposure
US20070019362A1 (en) * 2002-02-28 2007-01-25 Greatbatch-Sierra, Inc. Emi filters designed for direct body fluid exposure
US6888715B2 (en) 2002-02-28 2005-05-03 Greatbatch-Sierra, Inc. EMI feedthrough filter terminal assembly utilizing hermetic seal for electrical attachment between lead wires and capacitor
US7113387B2 (en) 2002-02-28 2006-09-26 Greatbatch-Sierra, Inc. EMI filter capacitors designed for direct body fluid exposure
US6765780B2 (en) 2002-02-28 2004-07-20 Greatbatch-Sierra, Inc. EMI feedthrough filter terminal assembly having surface mounted, internally grounded hybrid capacitor
US7623335B2 (en) 2003-02-27 2009-11-24 Greatbatch-Sierra, Inc Hermetic feedthrough terminal assembly with wire bond pads for human implant applications
US20050007718A1 (en) * 2003-02-27 2005-01-13 Stevenson Robert A. EMI filter terminal assembly with wire bond pads for human implant applications
US7310216B2 (en) 2003-02-27 2007-12-18 Greatbatch-Sierra, Inc. EMI filter terminal assembly with wire bond pads for human implant applications
US20050248907A1 (en) * 2003-02-27 2005-11-10 Greatbatch-Sierra, Inc. EMI filter terminal assembly with wire bond pads for human implant applications
US20060259093A1 (en) * 2003-02-27 2006-11-16 Greatbatch-Sierra, Inc. Hermetic feedthrough terminal assembly with wire bond pads for human implant applications
US7038900B2 (en) 2003-02-27 2006-05-02 Greatbatch-Sierra, Inc. EMI filter terminal assembly with wire bond pads for human implant applications
EP1475863A1 (en) * 2003-05-06 2004-11-10 Itt Manufacturing Enterprises, Inc. Filtered connector
US20050197677A1 (en) * 2004-02-12 2005-09-08 Stevenson Robert A. Apparatus and process for reducing the susceptability of active implantable medical devices to medical procedures such as magnetic resonance imaging
US7765005B2 (en) 2004-02-12 2010-07-27 Greatbatch Ltd. Apparatus and process for reducing the susceptability of active implantable medical devices to medical procedures such as magnetic resonance imaging
US20060028784A1 (en) * 2004-05-10 2006-02-09 Greatbatch-Sierra, Inc. Device to protect an active implantable medical device feedthrough capacitor from stray laser weld strikes, and related manufacturing process
US20050247475A1 (en) * 2004-05-10 2005-11-10 Stevenson Robert A Feedthrough terminal assembly with lead wire bonding pad for human implant applications
US7012192B2 (en) 2004-05-10 2006-03-14 Stevenson Robert A Feedthrough terminal assembly with lead wire bonding pad for human implant applications
US7035077B2 (en) 2004-05-10 2006-04-25 Greatbatch-Sierra, Inc. Device to protect an active implantable medical device feedthrough capacitor from stray laser weld strikes, and related manufacturing process
US7278887B1 (en) 2006-05-30 2007-10-09 John Mezzalingua Associates, Inc. Integrated filter connector
US20070281542A1 (en) * 2006-05-30 2007-12-06 John Mezzalingua Associates, Inc. Integrated filter connector
US7393245B2 (en) 2006-05-30 2008-07-01 John Mezzalingua Associates, Inc. Integrated filter connector
US8506325B2 (en) 2008-09-30 2013-08-13 Belden Inc. Cable connector having a biasing element
US8062063B2 (en) 2008-09-30 2011-11-22 Belden Inc. Cable connector having a biasing element
US8075337B2 (en) 2008-09-30 2011-12-13 Belden Inc. Cable connector
US8113875B2 (en) 2008-09-30 2012-02-14 Belden Inc. Cable connector
US8469739B2 (en) 2011-02-08 2013-06-25 Belden Inc. Cable connector with biasing element

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