AZ431AN-ATRG1
Diodes Incorporated
Needs validationlow risk
A SOT-23 shunt regulator from Diodes Inc. with matching specs and a wider temperature range.
Best Alternatives to TL431
The TL431 is a widely-used adjustable precision shunt regulator in a SOT-23 package. Finding a suitable replacement involves matching its adjustable voltage range (2.5V-36V), current handling (1-100mA), and pinout.
AI replacement insight
Electrical risklow
Key parameters match, but tolerance and dynamic impedance must be checked.
Package risklow
SOT-23 is standard, but pinout must be confirmed to be identical.
Sourcing risklow
The '431' family is widely available from multiple vendors.
Can it be replaced directly?
Direct replacement for TL431 should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
Cross-reference to other '431' family parts from different manufacturers, such as the ME431 or AZ431 series.
Main risk
The primary risk is a mismatch in voltage reference accuracy (tolerance) and dynamic impedance, which can affect regulation precision.
Recommended alternatives
2Alternative comparison matrix
| Feature / factor | TL431 | AZ431AN-ATRG1 | ME431AXG | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SOT-23 | SOT23 | SOT-23 | SOT23 / SOT-23 — Package matches.; ME431AXG: Package matches. | |
| Voltage | 2.5V ~ 36V | 2.5V to 36V | 2.5V to 36V | 2.5V to 36V — Adjustable voltage range matches.; ME431AXG: Adjustable voltage range matches. | |
| Current | 1mA ~ 100mA | 1mA to 100mA | 1mA to 100mA | 1mA to 100mA — Sink current capacity matches.; ME431AXG: Sink current capacity matches. | |
| Temperature | -25°C ~ +85°C | -40°C to +125°C | -40°C to 150°C | -40°C to +125°C / -40°C to 150°C — Wider operating temperature range.; ME431AXG: Wider operating temperature range. | |
| Tolerance | Not specified | 0.4% | 0.4% | 0.4% — Specific tolerance value; compare with application needs.; ME431AXG: Reference voltage tolerance may differ. |
Application & sourcing insights
Questions & answers
Verified drop-in options for TL431 are limited in the current batch. Review candidates marked Strong match or Datasheet verified, and validate package, pinout, and electrical limits before committing a BOM change.