Reliability Testing to JESD22 Methods: Nine Test Types In-House
In-house reliability testing to JESD22 methods: HTRB, H3TRB, HT/HU, temperature cycling, thermal shock, solderability, HTSL, RSH and HPC.
Reliability testing establishes whether a packaged device survives the thermal, electrical and humidity stress of its application over time. OCENME runs nine test types in-house to JESD22 methods — HTRB, H3TRB, HT/HU, HTSL, temperature cycling, thermal shock, solderability, RSH and HPC — with X-ray, C-SAM and die shear capability for failure analysis.
When this process applies
This page covers qualification and monitoring testing on packaged discrete devices: high-temperature reverse bias, humidity bias, high-temperature storage, thermal cycling and shock, solderability and solder heat. It does not cover wafer-level reliability, radiation testing or automotive qualification to AEC-Q101, which we do not offer.
Technical specifications
| Test types in-house | HTRB, H3TRB, HT/HU, HTSL, TCT, thermal shock, solderability, RSH, HPC |
|---|---|
| Standards | JESD22 methods; test conditions stated per report |
| Bias stress | HTRB and H3TRB at rated voltage and stated junction temperature |
| Thermal cycling | Air-to-air cycling; thermal shock by liquid-to-liquid where specified |
| Failure analysis | X-ray (YXLON), C-SAM (Sonoscan PVA), microscope, die shear and wire pull |
| Reporting | Sample size, conditions, read points and failures recorded per lot |
| Screening | Available as 100% screening or lot qualification by agreement |
Where it is the right choice
- New part number qualification before release to a customer
- Lot monitoring on production, at a frequency agreed per part number
- Customer-requested verification for a specific application condition
- Failure investigation where a returned unit must be sectioned and imaged
Where it is the wrong choice
Stating this explicitly matters more than a capability list: if your part falls into one of these categories, another process will cost you less.
- AEC-Q101 or AEC-Q100 qualification — we do not hold this and do not claim it
- Automotive PPAP evidence packages
- Board-level or system-level reliability testing of your assembly
- Long-term life prediction from a single short test; extrapolation needs a model and stated assumptions
Equipment
- HTRB bias ovens with per-device monitoring
- H3TRB humidity chambers with bias
- High-temperature storage and humidity ovens (HT/HU)
- Thermal cycling chamber (TCT) and thermal shock bath
- Solderability and solder heat test stations
- X-ray inspection system (YXLON)
- C-SAM acoustic scanning microscope (Sonoscan PVA)
- Die shear and wire pull testers, optical microscope
Process questions
What does HTRB test actually prove?
High-temperature reverse bias stresses the junction and termination at rated voltage and elevated temperature, which is where passivation and mobile-ion defects show up. It proves the device survives that bias at that temperature for that duration — no more. It does not prove avalanche ruggedness or dynamic switching behaviour, and a passing HTRB report cannot be used to claim automotive qualification.
How long does a qualification test take?
The stress duration drives it: HTRB and H3TRB are commonly 168, 500 or 1000 hours, and temperature cycling is counted in cycles, typically 500 to 1000. A 1000-hour test is six weeks of chamber time before read-out and reporting. Plan qualification into your schedule rather than expecting it as a shipping document.
Can I get a report for a part number I have not ordered yet?
Existing reports for a released part number can be shared under NDA. If no report exists for your part, we quote a qualification batch: build the lot, run the stress, test read points and issue the report. That is a paid activity with a lead time, not a document pulled from a folder.
Do you test to AEC-Q101?
No. We test to JESD22 methods and state the exact conditions in each report. AEC-Q101 has its own qualification and audit requirements, and we do not claim compliance. If your programme requires it, that is a supplier-selection criterion we will not meet, and saying so early saves both sides a wasted audit.
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Read articlesSend the part number and the operating conditions
Tell us the voltage class, current, switching frequency and what the device is replacing. You will get a datasheet, a parameter comparison at matched conditions, and a quotation with MOQ and lead time.