CN201726374U - Piezoelectric ceramic 10.7 MHz series filter - Google Patents
Piezoelectric ceramic 10.7 MHz series filter Download PDFInfo
- Publication number
- CN201726374U CN201726374U CN2010202258462U CN201020225846U CN201726374U CN 201726374 U CN201726374 U CN 201726374U CN 2010202258462 U CN2010202258462 U CN 2010202258462U CN 201020225846 U CN201020225846 U CN 201020225846U CN 201726374 U CN201726374 U CN 201726374U
- Authority
- CN
- China
- Prior art keywords
- pin
- chip
- piezoelectric ceramic
- electrode
- series filter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Abstract
The utility model relates to a piezoelectric ceramic 10.7 MHz series filter, which consists of a piezoelectric vibrator chip, a metal pin and an epoxy resin protection layer, and is characterized in that the metal pin is 2.0-5.0mm longer than the existing pin, and the lengthened part of the pin is inserted into the chip. Compared with the prior art, the utility model has the following progresses: because the metal pin is 2.0-5.0mm longer than the existing pin and the lengthened part of the pin is inserted into the chip, the structure enables the chip to be assembled reversely in assembly and makes the part needing welding fully arranged on the top of the pin; and after the pin is provided with the chip, the top of the pin, which needs welding, can be fully soaked in a tin pot, so the top part of the pin, which needs tinplating, can be ensured to be tinplated uniformly and consistently, which is helpful to improve the electrical properties and the reliability of the product.
Description
[technical field] the utility model relates to a kind of piezoelectric ceramic filter, is a kind of piezoelectric ceramic 10.7MHZ series filter specifically.
[background technology] piezoelectric ceramic filter is made up of piezoelectric vibrator chip, metal pins and epoxy resin protective layer, can be used for fields such as tuner, wireless headset, automobile audio, intercom, broadcast receiver.Piezoelectric ceramic filter itself only wishes that there is piezoelectric property in the vibrating electrode zone of chip, and piezoelectric ceramic filter just can not be subjected to the interference at other position of chip and produce clutter like this, but the piezoelectric ceramic entire chip but all has piezoelectric property.In order to suppress the vibration of the electrode of other except that vibrating electrode on the chip (as pin pad and coupling capacitance) as much as possible, just must cover the very big material of a kind of load thereon and stop generation of vibration.This heavy load material generally all is to use scolding tin, promptly in welding other electrode tin of burn-oning as much as possible entirely.Along with the compulsory execution of the unleaded requirement of scolding tin, make the fusion temperature of scolding tin improve about 50 degree.If too high chip of temperature and electrode adhesion can be held and be can't stand during welding, if the very poor rosin joint that often occurs of ductility of the too low scolding tin of temperature during welding, and pad electrode and capacitance electrode are difficult to go up expires tin, has strengthened the difficulty of welding so greatly, and the electrical property of product also can not get guaranteeing.
[summary of the invention] the purpose of this utility model provides a kind of piezoelectric ceramic 10.7MHZ series filter, the filter of this new construction, can make full the going up on bonding pads electrode and capacitance electrode of lead-free solder, and do not influence the performance of chip and the adhesive force of electrode, thereby improve the electrical property and the reliability of products of product.
For solving its technical problem; the technical solution used in the present invention is: the piezoelectric ceramic filter of designing is made up of piezoelectric vibrator chip, metal pins and epoxy resin protective layer; its feature is: 1, described metal pins is than the long 2.0-5.0mm of existing pin; the pin of elongated portion inserts in the chip; 2, the top of described metal pins all contacts with the bonding pads electrode, is that 245 ± 5 ℃ tin stove directly links to each other the electrode of chip with pin by immersing temperature.
Compared with prior art, the utility model has following progress, because of described metal pins than the long 2.0-5.0mm of existing pin, and the pin of elongated portion inserts in the chip, this structure makes chip can turn assembling around during assembling, makes the part that needs welding all be placed on the apical position of pin.Pin assembles the part that the top of pin need be welded behind the chip and can be dipped into fully in the tin pot, and the top of the pin part that need go up tin just can guarantee the uniformity and the consistency of tin like this, helps improving the electrical property and the reliability of products of product.
[description of drawings] further specifies the utility model below in conjunction with drawings and Examples.
Fig. 1 is the pin configuration schematic diagram of existing piezoelectric ceramic 10.7MHz series filter;
Fig. 2 is a pin configuration schematic diagram of the present utility model;
Fig. 3 is a chip front side structural representation of the present utility model;
Fig. 4 is a chip back structural representation of the present utility model
Fig. 5 is the assembling schematic diagram of existing piezoelectric ceramic 10.7MHz series filter pin and chip front side;
Fig. 6 is the assembling schematic diagram of existing piezoelectric ceramic 10.7MHz series filter pin and chip back;
Fig. 7 is the assembling schematic diagram of the utility model pin and chip back;
Fig. 8 is the assembling schematic diagram of the utility model pin and chip front side;
Fig. 9 is product performance figure of the present utility model;
Figure 10 is the product performance figure of existing piezoelectric ceramic 10.7MHz series filter.
Among the figure: 1, pad electrode, 2, the front capacitance electrode; 3, back side capacitance electrode and double as ground pad electrode; 4, front vibrating electrode; 5, back side vibrating electrode; 6, chip; 7, pin.
[embodiment] with reference to accompanying drawing, the piezoelectric ceramic 10.7MHz series filter of designing
Form by piezoelectric vibrator chip 6, metal pins 7 and epoxy resin protective layer, its feature is: described piezoelectric vibrator chip 6 is provided with the pad electrode 1 that is used for input and output, the front of chip 6 is provided with capacitance electrode 2 and front vibrating electrode 4, and the back side of chip 6 is provided with capacitance electrode and double as ground pad electrode 3; The front vibrating electrode 4 of chip, the back side vibrating electrode 5 of chip, wherein, the top of metal pins 7 is than the long 2.0-5.0mm of existing pin; Chip 6 inserts in the pin 7.The top of pin is attached to respectively on the bonding pads electrode 1,3, is that 245 ± 5 ℃ tin stove directly links to each other the electrode of chip with pin by immersing temperature. Bonding pads electrode 1,3 and capacitance electrode 2 just can guarantee reliable full last tin like this, and reliably link to each other with pin 7.This filter can not produce clutter (product performance as shown in Figure 9), and squareness factor and stopband also are significantly improved than existing product, and because the distance lengthening of pin and pad has further guaranteed the anti-sweating heat ability of product.And the chip 6 of existing structure inserts in the pin 7, the top of pin is attached to respectively on the bonding pads electrode 1,3, because it is very shallow that pin 7 is clamped the chip degree of depth, chip is easy to walk or fall down from pin 7 before welding, thereby influences the outward appearance and the qualification rate of product; It can only be that 400 ± 20 ℃ electric iron fusing tin silk spots weld on chip bonding pad electrode 1,3 and the capacitance electrode 2 with temperature that the pin of existing structure installs behind the chip.Tin full (product performance as shown in figure 10) on bonding pads electrode 1,3 and capacitance electrode 2 very difficult assurances the, and chip bonding pad electrode 1,3 like this and pin 7 the rosin joint phenomenon occurs through regular meeting.
Claims (2)
1. a piezoelectric ceramic 10.7MHz series filter is made up of piezoelectric vibrator chip, metal pins and epoxy resin protective layer, and it is characterized in that: described metal pins is than the long 2.0-5.0mm of original pin, and the pin of elongated portion inserts in the chip.
2. piezoelectric ceramic 10.7MHz series filter according to claim 1, it is characterized in that: the top of described metal pins all contacts with the bonding pads electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202258462U CN201726374U (en) | 2010-06-08 | 2010-06-08 | Piezoelectric ceramic 10.7 MHz series filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202258462U CN201726374U (en) | 2010-06-08 | 2010-06-08 | Piezoelectric ceramic 10.7 MHz series filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201726374U true CN201726374U (en) | 2011-01-26 |
Family
ID=43494727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202258462U Expired - Fee Related CN201726374U (en) | 2010-06-08 | 2010-06-08 | Piezoelectric ceramic 10.7 MHz series filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201726374U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103187946A (en) * | 2013-03-23 | 2013-07-03 | 湖南嘉业达电子有限公司 | Piezoelectric ceramic filter |
| CN107769753A (en) * | 2017-09-20 | 2018-03-06 | 戴承萍 | A kind of reconfigurable filter and complex filter |
-
2010
- 2010-06-08 CN CN2010202258462U patent/CN201726374U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103187946A (en) * | 2013-03-23 | 2013-07-03 | 湖南嘉业达电子有限公司 | Piezoelectric ceramic filter |
| CN103187946B (en) * | 2013-03-23 | 2015-12-09 | 湖南嘉业达电子有限公司 | A kind of piezoelectric ceramic filter |
| CN107769753A (en) * | 2017-09-20 | 2018-03-06 | 戴承萍 | A kind of reconfigurable filter and complex filter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201726374U (en) | Piezoelectric ceramic 10.7 MHz series filter | |
| CN105057873A (en) | Method for preparing CuW/Cu/CuCrZr integrated contact through electron beam welding | |
| CN104638223A (en) | Welding structure for plate electrode foils and plate lug of lithium battery | |
| CN101841314A (en) | Quartz crystal resonator and manufacturing method thereof | |
| CN203799821U (en) | Coil magnetic core assembly | |
| CN206713166U (en) | The different ultrasonic sensor of lead welding manner | |
| CN103957663A (en) | Hollow-welding-column perpendicular interconnection structure of assembled plates and manufacturing method | |
| CN204822692U (en) | A cavity for $sealing up electronic components | |
| CN201812815U (en) | Rectifier for preventing crystal grains from drifting | |
| CN204031581U (en) | A kind ofly prevent that adjacent pad from connecting the pcb board structure of tin | |
| CN203596975U (en) | PCB with PIN connecting pin | |
| CN201369426Y (en) | Connection terminal | |
| CN207272422U (en) | Lug surpasses welding machine | |
| CN204167089U (en) | A kind of induction soldering localization tool | |
| CN204189621U (en) | Vacuum capacitor electrode retaining collar group | |
| CN207097811U (en) | A kind of SMD element | |
| CN106829020A (en) | A kind of location technology of braid formula electric capacity | |
| CN205927575U (en) | Environmental protection solder wire | |
| CN211680429U (en) | Novel ceramic heating tube | |
| CN204156157U (en) | A kind of vehicular connecting terminal | |
| CN102456656A (en) | Chip package | |
| CN204068727U (en) | A kind of power rectifier bridge | |
| CN203871317U (en) | Structure of bridge rectifier | |
| CN107039384A (en) | A kind of SMD element | |
| CN202804536U (en) | Conducting wire bracket pressing plate for encapsulation of semiconductor device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110126 Termination date: 20110608 |