Method and apparatus for testing inner lead bonds

Details Method and apparatus for testing inner lead bonds Method and apparatus for testing inner lead bonds

1991-06-28

1993-06-01

Myracle, Jerry W.

Measuring and testing

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

By loading of specimen

G01N 308

Patent

active

052149633

ABSTRACT:
A process for nondestructive testing of beam lead bonds in disclosed. A high pressure liquid jet is applied to the beam leads adjacent the bond pad such that a force is applied to the lead in the opposite direction of the bonding step. If the bond does not have sufficient strength, the lead is bent away from the bonding pad and can be detected either visually or electrically. If the bond does have sufficient strength to withstand the force, no degradation of the bond occurs.

REFERENCES:
patent: 3559054 (1971-01-01), Bowers
patent: 3581557 (1971-06-01), Drees et al.
patent: 4771666 (1988-09-01), Ikeuchi et al.

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