JPH0197262U

JPH0197262U -

Info

Publication number: JPH0197262U
Application number: JP19269087U
Authority: JP
Priority date: 1987-12-21
Filing date: 1987-12-21
Publication date: 1989-06-28
Anticipated expiration: 2002-12-21
Also published as: JPH0533973Y2

Description

[Brief explanation of the drawing]

第１図は本考案によるＱＦＰ用測定プローブ組
立体の一実施例の一部を示す斜視図、第２図は第
１図に示したＱＦＰ用測定プローブ組立体の一側
面の櫛形部材を示す正面図、第３図は第１図に示
したＱＦＰ用測定プローブ組立体の測定プローブ
を隣接するリード間に挿入した状態で示す部分拡
大斜視図である。１０……矩形板部材、１２……櫛形部材、１４
……背部、１６……歯部、１８……測定プローブ
、２０……テーパ状ヘツド部材、２２……導体部
材、２４……導体小片、２６……リード線、２８
……接続部、３０……電気ケーブル、３２……測
定器、３４……リード。 FIG. 1 is a perspective view showing a part of an embodiment of the QFP measurement probe assembly according to the present invention, and FIG. 2 is a front view showing a comb-shaped member on one side of the QFP measurement probe assembly shown in FIG. 3 is a partially enlarged perspective view showing the measurement probe of the QFP measurement probe assembly shown in FIG. 1 inserted between adjacent leads. 10... Rectangular plate member, 12... Comb-shaped member, 14
... Back part, 16 ... Teeth, 18 ... Measurement probe, 20 ... Tapered head member, 22 ... Conductor member, 24 ... Conductor piece, 26 ... Lead wire, 28
... Connection part, 30 ... Electric cable, 32 ... Measuring device, 34 ... Lead.

Claims

[Scope of Claim for Utility Model Registration] 1. A measurement probe assembly for QFP used when performing electrical characteristic tests, functional tests, etc. of QFP installed on a printed circuit board, which
It has four comb-shaped members 12 arranged along the four sides of a substantially similar rectangle larger than the planar rectangle of the QFP chip body, and each of these comb-shaped members corresponds to the number of leads 34 extending from the corresponding side of the QFP chip body. A measurement probe 18 is provided at the tip of each tooth of the comb-shaped member, and this measurement probe connects a tapered head member 20 and a tapered head member 20. It consists of a pair of conductor members 22 applied in an insulating state to both tapered side surfaces facing each other, and the distance between the pair of conductor members is smaller than the lead pitch interval of the QFP on the narrow end side of the tapered head member. , the measurement probes of each of the comb-shaped members are arranged in such a manner that both tapered side surfaces of their tapered head members are aligned facing each other, and the distance between the centers of two adjacent measurement probes is a QFP chip. A measurement probe assembly for a QFP, which corresponds to the center-to-center distance of the outer lead pitch intervals of three consecutive lead pitch intervals on the corresponding side of the main body. 2 QF stated in Paragraph 1 of Claims for Utility Model Registration
In the measurement probe assembly for P, the four comb-shaped members 12 are supported in a manner suspended from the four sides of a substantially similar rectangular plate member 10 that is larger than the planar rectangle of the QFP chip body.
Measurement probe assembly for P. 3 QF stated in Paragraph 2 of Claims for Utility Model Registration
A QFP measurement probe assembly characterized in that a weight is provided on the upper surface of the rectangular plate member 10. 4 Utility Model Registration In the QFP measurement probe assembly according to any one of claims 1 to 3, the tapered head member 20 has a wedge shape, and the wedge surfaces thereof face each other. A measurement probe assembly for QFP, characterized in that the pair of conductor members 22 is applied to the QFP measurement probe assembly. 5 Utility Model Registration In the QFP measurement probe according to any one of claims 1 to 3, the tapered head member 20 has a truncated conical shape, and has two members facing each other in the diametrical direction. A measurement probe assembly for QFP, characterized in that the pair of conductor members 22 are applied to the tapered surface portion. 6 Utility Model Registration In the QFP measurement probe according to any one of claims 1 to 3, the tapered head member 20 has a truncated elliptical cone shape and faces each other in the diametrical direction. A measurement probe assembly for QFP, characterized in that the pair of conductor members 22 are applied to both tapered surface portions.