In-line determination of presence of liquid phase moisture in se

Details In-line determination of presence of liquid phase moisture in se In-line determination of presence of liquid phase moisture in se

1986-05-19

1988-10-04

Envall, Jr., Roy N.

Electricity: measuring and testing

Conductor identification or location

Inaccessible

324 65R, G01R 2702

Patent

active

047758317

ABSTRACT:
Liquid-phase moisture is detected in sealed integrated circuit packages by measuring the conductance and capacitance of the integrated circuit at a temperature which is above temperatures which allow moisture to condense; and remeasuring the conductance and capacitance of the integrated circuit at a temperature which allows any moisture present to condense on the integrated circuit. The conductance of the integrated circuit is expected to rise sharply with the condensation of water on its surface.

REFERENCES:
patent: 3479862 (1969-11-01), Trapp et al.
patent: 3943557 (1976-03-01), Frazee et al.
patent: 4050048 (1977-09-01), Frazee
patent: 4224565 (1980-09-01), Sosniak
patent: 4272986 (1981-06-01), Lowry et al.

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