Mr. Quality Control Explains Pin-To-Pin Resistance And Clampdown Voltage Of Protective Diode Testing

Pin-to-pin resistance and clampdown voltage of protective diode testing, (PTPR/CVPD), is a preferred testing option for high pin count and complex components, especially where set-up for functional testing can be prohibitively long and expensive.  Its advantages are fast set-up & programming time, fast test cycle time, low price and a high degree of reliability.

It is highly recommended to include decapsulation analysis as added insurance against such situations. A golden sample is also preferred to compare measurements with a suspect device. Counterfeit ICs with the same die configuration with similar pin-outs but different functions can pass PTPR/CVPD testing and the decapsulation and golden sample comparison eliminate that possibility. Complete testing profile includes: pin-to-pin resistance test, clamp-down voltage of protective diodes, decapsulation analysis and golden sample comparison.

White Horse’s test system for CVPD and PTPR testing facilitates pin counts up to 512, with high levels of precision in an automated test system (ATE) with 100% data storage and recall. Our application success rate with this testing is over 99% when combined with decapsulation analysis.

The number one cause of component failure is opens and shorts caused by over-voltage and damaged hardware. PTPR/CVPD Catches It.

Mark Rinehart

White Horse Laboratories Limited

solutions@whitehorse-intl.com.com,  www.whitehorselabs.com

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