CN207021252U

CN207021252U - A kind of triode

Info

Publication number: CN207021252U
Application number: CN201720519109.5U
Authority: CN
Inventors: 徐红波
Original assignee: Ningbo Gangbo Electronic Co Ltd
Current assignee: Ningbo Gangbo Electronic Co Ltd
Priority date: 2017-05-11
Filing date: 2017-05-11
Publication date: 2018-02-16
Anticipated expiration: 2027-05-11

Abstract

The utility model discloses a kind of triode, including plastic-sealed body and three pins, the bottom of the plastic-sealed body is provided with projection, the distance of the raised bottom surface to the plastic-sealed body bottom surface is more than the bottom surface of the pin and is inserted into the distance of the plastic-sealed body, the projection in the through hole being engaged on mainboard.During use, if during chip mounter paster, position is inaccurate, then the projection of triode bottom can not be inserted on mainboard in the through hole of opposite position, because the distance of the raised bottom surface to the plastic-sealed body bottom surface is more than the bottom surface of the pin to the distance of the plastic-sealed body, so pin is before mainboard is touched, projection will first touch mainboard, so triode cannot be attached on mainboard, once the inaccurate situation of patch location occurs for chip mounter, operating personnel can just may be immediately observed that, convenient to make adjustment to equipment in time.

Description

A kind of triode

Technical field

A kind of electronic device is the utility model is related to, more particularly to a kind of triode.

Background technology

Triode, full name should be transistor, also referred to as bipolar transistor, transistor, be a kind of electric current controls Its effect of the semiconductor devices of electric current processed is that small-signal is zoomed into the larger electric signal of range value, also serves as contactless open Close.Transistor, it is one of basic component of semiconductor, there is Current amplifier effect, is the core parts of electronic circuit.Three Pole pipe is that the PN junction of two close proximities is made on a block semiconductor substrate, and bulk semiconductor is divided into three by two PN junctions Point, center section is base, and two side portions are launch site and collecting zone, and arrangement mode has two kinds of PNP and NPN.

At present, in large-scale production, triode is all directly to be attached to by chip mounter on mainboard.The precision of chip mounter is necessary It is very high, if some contrast is accurate, it is likely that the dislocation of pad is will result in, but this dislocation, machine can not perceive, If careless when staff's quality inspection, can not also detect, it is therefore necessary to improve.

The content of the invention

For the deficiencies in the prior art, the utility model provides a kind of triode, when chip mounter, which pastes, to misplace, Triode can not be fitted on mainboard.

The utility model is achieved by the following technical solution：A kind of triode, including plastic-sealed body and three pins, institute The bottom for stating plastic-sealed body is provided with projection, and the distance of the raised bottom surface to the plastic-sealed body bottom surface is more than the bottom of the pin To the distance of the plastic-sealed body, the projection is inserted into the through hole being engaged on mainboard in face.If in use, chip mounter paster When, position is inaccurate, then the projection of triode bottom can not be inserted on mainboard in the through hole of opposite position, due to the projection The distance of bottom surface to the plastic-sealed body bottom surface be more than the bottom surface of the pin to the distance of the plastic-sealed body, such pin connecing Before contacting mainboard, projection will first touch mainboard, and such triode cannot be attached on mainboard, once chip mounter is sent out The inaccurate situation of raw patch location, operating personnel can just may be immediately observed that, convenient to make adjustment to equipment in time.

In above-mentioned technical proposal, it is preferred that the pin is bent towards the bottom surface of the plastic-sealed body.During paster, pin meeting By larger pressure, the benefit so designed is, during paster, pin has the bottom supporting of plastic-sealed body, will not deform and Situation about fractureing.

In above-mentioned technical proposal, it is preferred that the projection has two.Two projections are with regard to that can limit the accurate position of triode Put, ensure that triode installation is accurate.

In above-mentioned technical proposal, it is preferred that the projection is truncated conical shape.The reason for so setting is easy for chip mounter work When making, small position occur can be with self-alignment.Assuming that when chip mounter pastes triode, there is small error with target location, At this time, raised top can also be inserted in through hole, but the axis of raised axis and through hole is not coaxial, as triode enters One step it is close with mainboard, at this time, the side of round platform is in contact with the inwall of through hole, and pushes round platform to coaxial position, three Pole pipe also gradually moves towards setting position.

In above-mentioned technical proposal, it is preferred that three pins are distributed on the relative two sides of the plastic-sealed body.

The utility model has the advantages that：If in use, during chip mounter paster, position is inaccurate, then three pole The projection of bottom of the tube can not be inserted on mainboard in the through hole of opposite position, due to the raised bottom surface to the plastic-sealed body bottom The distance in face is more than the bottom surface of the pin to the distance of the plastic-sealed body, and such pin is before mainboard is touched, and projection is just Mainboard can be first touched, such triode cannot be attached on mainboard, once the inaccurate feelings of patch location occur for chip mounter Condition, operating personnel can just may be immediately observed that, convenient to make adjustment to equipment in time.

Brief description of the drawings

Fig. 1 is the structural representation that the utility model is arranged on mainboard.

Fig. 2 is front schematic view of the present utility model.

Fig. 3 is schematic rear view of the present utility model.

Embodiment

The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings：

Referring to Fig. 1 to Fig. 3, a kind of triode 1, including plastic-sealed body 1 and three pins 21,22,23, three pins 21st, 22,23 it is distributed on the relative two sides of the plastic-sealed body 1.The pin is bent towards the bottom surface of the plastic-sealed body.Paster When, pin can be by larger pressure, and the benefit so designed is, during paster, pin has the bottom supporting of plastic-sealed body, Bu Huifa The shape that changes and situation about fractureing.

The bottom of the plastic-sealed body 1 is provided with two projections 11, raised 11 bottom surface to the plastic-sealed body bottom surface Distance A is more than the bottom surface of the pin 21,22,23 to the distance B of the bottom surface of plastic-sealed body 1, and described raised 11 are inserted into mainboard 3 On in the through hole 31 that is engaged.Described raised 11 be truncated conical shape.When the reason for so setting is easy for chip mounter work, occur Small position can be with self-alignment.Assuming that when chip mounter pastes triode, there is small error with target location, it is at this time, convex The top risen can also be inserted in through hole, but the axis of raised axis and through hole is not coaxial, with triode further with Mainboard is close, and at this time, the side of round platform is in contact with the inwall of through hole, and pushes round platform to coaxial position, triode also by Gradually moved towards setting position.

If in use, during chip mounter paster, position is inaccurate, then the projection of triode bottom can not insert phase on mainboard In the through hole of correspondence position, the bottom surface that the pin is more than due to the distance of the raised bottom surface to the plastic-sealed body bottom surface is arrived The distance of the plastic-sealed body, for such pin before mainboard is touched, projection will first touch mainboard, and such triode is just not It can be attached on mainboard, once the inaccurate situation of patch location occurs for chip mounter, operating personnel can just may be immediately observed that, convenient Adjustment is made to equipment in time.

Claims

1. a kind of triode, including plastic-sealed body and three pins, it is characterised in that：The bottom of the plastic-sealed body is provided with projection, The distance of the raised bottom surface to the plastic-sealed body bottom surface is more than the bottom surface of the pin to the distance of the plastic-sealed body, described Projection is inserted into the through hole being engaged on mainboard.

2. triode according to claim 1, it is characterised in that：The pin is bent towards the bottom surface of the plastic-sealed body.

3. triode according to claim 1, it is characterised in that：The projection has two.

4. triode according to claim 1, it is characterised in that：The projection is truncated conical shape.

5. triode according to claim 1, it is characterised in that：It is relative that three pins are distributed in the plastic-sealed body On two sides.