AMI biased insulation and leakage monitoring

ESPEC · Reliability qualification and failure analysis

Purpose: Leakage during humidity-bias testing requires resistance histories and event timing correlated with environmental conditions.
Technical approach: AMI applies bias and measures insulation resistance/leakage. Per-channel event detectors monitor threshold crossings; measurements are recorded at configured intervals, with linked chamber temperature/humidity.
Scope of use: Contactable boards, substrates and insulation coupons for electrochemical-migration and humidity-bias studies, using specimen-compatible bias and fixtures.
Limitations and open questions: These evaluation considerations are compiled by BLNKK from public information. They are not supplier guarantees or a mandatory submission checklist.
Scope and limitations
Resistance drops do not distinguish CAF, surface dendrites or fixture leakage without localization. Event detection is not continuous precision waveform capture; chambers and fixtures require compatible configurations.
What to prepare
BLNKK suggests documenting spacing, stack-up, bias, climate and failure thresholds, with fixture blanks and failed-site analysis.
Confirm with the supplier
Confirm bias/resistance ranges, event thresholds, recording, chamber/fixture compatibility, options and calibration.
Public evidence: ESPEC’s product/service pages and June 2021 catalogue describe resistance measurements, event detection and chamber linkage across voltage configurations.

Supporting references

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