TL431BQDBZRQ1
TE Connectivity Aerospace, Defense & Marine
Needs validationhigh risk
TL431BQDBZRQ1 may work only as a redesigned adjustable shunt reference.
Best Alternatives to NCP51460SN33T1G
No pin-compatible replacement is proven for NCP51460SN33T1G from the provided candidates. TL431BQDBZRQ1 is only a redesign candidate.
AI replacement insight
Electrical riskhigh
fixed reference vs shunt or LDO parts
Package riskmedium
SOT-23-3 matches but pinout is missing
Firmware risklow
analog reference, no protocol
Sourcing riskmedium
PDF check pending
Can it be replaced directly?
No direct pin-compatible replacement is supported by the provided evidence.
Best replacement path
Use TL431BQDBZRQ1 only if a shunt-reference redesign is acceptable.
Main risk
Topology, pinout, input range, and load behavior are not aligned.
Recommended alternatives
1Alternative comparison matrix
| Feature / factor | NCP51460SN33T1G | TL431BQDBZRQ1 | Alt 2 | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SOT-23-3 | SOT-23-3 | SOT-23-3 — same package name | ||
| Pinout | 3 pins | 3 pins | 3 pins — pin functions missing | ||
| Voltage | 3.3V fixed, Vin 4.2-28V | 2.5-36V adjustable | 2.5-36V adjustable — needs divider | ||
| Current | 20mA output | 1-100mA sink | 1-100mA sink — shunt sink current | ||
| Temperature | 0 to 100C | -40 to 125C | -40 to 125C — wider range | ||
| Tolerance | 1% | 0.5% | 0.5% — better ref tolerance |
Application & sourcing insights
Questions & answers
From this list, TL431BQDBZRQ1 is the only keep candidate, but only for a redesigned shunt-reference circuit.