Burn in Hours Charged against the Product Life Remaining
Accelerated burn in hours deduct directly from product life reserves based on activation energy kinetics and must be contractually capped to prevent premature field wear out.
JESD47 Qualification
Standard Specification
Component level stress test qualification defines the baseline reliability standards required for integrated circuits before commercial release into electronic assemblies. Semiconductor manufacturers perform JESD47 qualification to evaluate device robustness against severe environmental and electrical stress vectors. Standardized stress tests expose microelectronic devices to high temperature operating life, temperature cycling, biased highly accelerated stress testing and electrostatic discharge events.
Passing these environmental tests proves that component designs and fabrication processes maintain target reliability requirements over intended service lifetimes. Silicon vendors issue compliance reports confirming that product families meet all environmental exposure criteria established by the standard.
Stress Protocol
Sequential environmental testing forces latent silicon and packaging failure mechanisms to emerge under accelerated laboratory conditions. Compliance with JESD47 qualification mandates specific sample sizes and test durations for temperature cycling, moisture sensitivity, high temperature storage and solderability exposure. Preconditioning steps simulate solder reflow thermal profiles experienced during circuit board assembly operations.
Electrical re-testing after stress exposure identifies parameter shifts and functional failures across component pinouts.
Compliance Boundary
Qualification testing applies strictly to baseline component design and fabrication process verification rather than lot acceptance screening. Process changes or material substitutions require re-qualification according to industry risk matrices. Re-testing validates that component modifications introduce no new defect mechanisms into surface mount assembly streams.