QUALIFICATION · SUFFIX
What does TI -Q1 mean?
In TI nomenclature, -Q1 usually indicates an automotive-grade part. But a Q1 family name does not mean every OPN is identical. Separate GPN from OPN, then check the exact orderable's Rating, AEC-Q100 and datasheet.
30-second answer
TI uses the -Q1 suffix on TI.com for automotive products. The final qualification verdict must land on the exact OPN's Rating, AEC-Q100 grade, temperature range and datasheet — not just the GPN name.
Q1, EP and HT are not the same
| Suffix | Usually means | What to verify |
|---|---|---|
| -Q1 | Automotive, usually AEC-Q100 (verify on the product page/datasheet) | Exact OPN Rating, AEC grade, temperature |
| -EP | Enhanced Product for aerospace/defense | Do not treat as automotive; check Rating |
| -HT | High-temperature product | Temperature/package; not automatically automotive |
| No suffix | May be Catalog or Automotive; rating is at part level | Check the exact OPN on TI.com |
GPN vs OPN: why one family can have different ratings
A GPN is the generic product number for a family; an OPN is the orderable with a specific package, temperature, NVM configuration and packaging. TI assigns ratings at part level, so one GPN can contain both Automotive and Catalog OPNs. TDA4VM is a good example: only some Q1 variants are marked AEC-Q100.
Three steps to check a TI automotive part
| Step | What to look at | Where |
|---|---|---|
| 1. Lock the OPN | Do not stop at the GPN; find the exact orderable | TI product page ordering section / authorized distributor |
| 2. Check Rating and AEC | Rating=Automotive? Which AEC-Q100 grade? Temperature? | TI product details, datasheet |
| 3. Check FS and PPAP | FS-Capable/Compliant? PPAP available? | TI functional safety, PPAP and product pages |
Four real examples
| Part | Automotive verdict | Key caveat |
|---|---|---|
| TPS6594-Q1 | AEC-Q100 Grade 1, –40 to +125°C | NVM configuration/sequencing differs by OPN |
| BQ79616-Q1 | AEC-Q100 Grade 1, –40 to +125°C | ASIL-D is device capability/documentation, not a system certificate |
| TDA4VM | Only Q1 variants are AEC-Q100; the GPN also has Catalog | Do not label the entire family automotive |
| TMS320F28377D-Q1 | Q temperature option maps to AEC-Q100; T/S options differ | Check the OPN suffix |
FAQ
Does -Q1 always mean AEC-Q100?
On TI.com it usually indicates automotive grade, but always verify the exact OPN's product page/datasheet; do not rely on the suffix alone.
Why are there multiple OPNs for one part?
OPNs can differ by package, temperature, NVM configuration, power sequencing or packaging; the automotive rating can differ too.
Is Q1 the same as ASIL?
No. Q1/AEC-Q100 is an automotive reliability qualification; ASIL is an ISO 26262 functional-safety level. They are not interchangeable.
Can procurement order by GPN only?
Not recommended. The BOM should carry the full OPN and verify lifecycle, package, temperature and PPAP; the GPN is a selection entry point.
Sources: TI product life cycle, TI Part ratings, TI product pages; accessed 2026-11-04.