Method and apparatus for testing lead bonds and detecting failur

Details Method and apparatus for testing lead bonds and detecting failur Method and apparatus for testing lead bonds and detecting failur

1990-11-19

1992-02-04

Raevis, Robert R.

Measuring and testing

Specimen stress or strain, or testing by stress or strain...

By loading of specimen

G01N 308

Patent

active

050850849

ABSTRACT:
A method includes applying a fluid force to a lead and determining if a lead separates at its bond in response to fluid force. The fluid can be applied to all the leads simultaneously or to given groups of leads. The determination of how many and which leads are separated is produced by positioning a sensor adjacent the leads and an indicator.

REFERENCES:
patent: 3564911 (1971-02-01), Slemmons et al.
patent: 3581557 (1971-06-01), Drees et al.
patent: 3945248 (1976-03-01), West
patent: 4282759 (1981-08-01), Merrel
Unger, "Self Test Ultrasonic Wire Bonding", Conference: 29th Electronic Components Conference, Cherry Hill NJ (14-16 May 1979).

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