TL431BQDBZR
Nexperia USA Inc.
Needs validationlow risk
TL431BQDBZR is the closest listed upgrade candidate with tighter tolerance.
Best Alternatives to TL431AQDBZR
TL431AQDBZR is a 1% adjustable shunt reference in SOT-23-3. The closest listed candidate is TL431BQDBZR, pending pinout review.
AI replacement insight
Electrical riskmedium
Some candidates reduce temp or tolerance.
Package risklow
Kept candidates list SOT-23-3.
Firmware risklow
No firmware interface.
Sourcing riskmedium
Manufacturer records conflict in data.
Can it be replaced directly?
No fully verified direct replacement is confirmed from the provided data.
Best replacement path
Check TL431BQDBZR first; it keeps the Q temp range and improves tolerance.
Main risk
DBZR pinout and unchecked datasheets are the main blockers.
Recommended alternatives
4Alternative comparison matrix
| Feature / factor | TL431AQDBZR | TL431BQDBZR | TL431AIDBZR | TL431BCDBZR | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SOT-23-3 | SOT-23-3 | SOT-23-3 | SOT-23-3 | SOT-23-3 — same package; TL431AIDBZR: same package; TL431BCDBZR: same package; TL431ACDBZR: same package |
| Pinout | 3 pins | 3 pins | 3 pins | 3 pins | 3 pins — pin map pending; TL431AIDBZR: pin map pending; TL431BCDBZR: pin map pending; TL431ACDBZR: pin map pending |
| Voltage | 2.495-36V | 2.495-36V | 2.495-36V | 2.495-36V | 2.495-36V — same range; TL431AIDBZR: same range; TL431BCDBZR: same range; TL431ACDBZR: same range |
| Tolerance | ±1% | ±0.5% | ±1% | ±0.5% | ±0.5% / ±1% — tighter grade; TL431AIDBZR: same grade; TL431BCDBZR: tighter; TL431ACDBZR: same grade |
| Temperature | -40 to 125C | -40 to 125C | -40 to 85C | 0 to 70C | -40 to 125C / -40 to 85C / 0 to 70C — Q range; TL431AIDBZR: not Q range; TL431BCDBZR: commercial only; TL431ACDBZR: commercial only |
Application & sourcing insights
Questions & answers
TL431BQDBZR is the best listed candidate because it keeps the 125C range and has tighter 0.5% tolerance.