ProjectsPricingInsights

Best Alternatives to 1SMA5925BT3G

Package: DO-214AC, SMAonsemiDiodes - Zener - SinglePackage: Tape & Reel (TR); Cut Tape (CT); Digi-Reel®Voltage - Zener (Nom) (Vz): 10 VTolerance: ±5%Current - Reverse Leakage @ Vr: 2.5 µA @ 8 VVoltage - Forward (Vf) (Max) @ If: 1.5 V @ 200 mA

Finding a substitute for the onsemi 1SMA5925BT3G Zener diode requires careful matching of its 10V Zener voltage, 1.5W power rating, and SMA package. While no perfect drop-in replacements were found, several alternatives exist with specific trade-offs.

AI replacement insight

Electrical riskhigh

Candidates have lower power ratings or different voltages.

Package risklow

All viable candidates use the same SMA package.

Can it be replaced directly?

No direct, 1:1 drop-in replacement is identified. All candidates require engineering review due to differences in power rating or Zener voltage.

Best replacement path

Evaluate SMA4740A, verifying that the circuit's power dissipation is safely under its 1W rating.

Main risk

The primary risk is using a substitute with a lower power rating (1W vs 1.5W), which could cause thermal failure if the circuit operates near the original part's limit.

Recommended alternatives

5
SMA4740A package
SMA4740A

ZHIDE

Needs validationmedium risk

Matches 10V Zener voltage and package, but has a lower 1W power rating.

View details

Alternative comparison matrix

Feature / factor1SMA5925BT3GSMA4740A1SMA4739A1SMA5930BT3GCompatibility / risk
Voltage10V10V9.1V16V10V / 9.1V / 16V / 18V — matched; 1SMA4739A: Outside target's ±5% tolerance range.; 1SMA5930BT3G: Significantly different Zener voltage.; 1SMA5931BT3G: Significantly different Zener voltage.
Power1.5W1W1W1.5W1W / 1.5W — Lower power rating requires circuit verification.; 1SMA4739A: Lower power rating requires circuit verification.; 1SMA5930BT3G: matched; 1SMA5931BT3G: matched
PackageSMA (DO-214AC)SMA (DO-214AC)SMA (DO-214AC)SMA (DO-214AC)SMA (DO-214AC) — matched; 1SMA4739A: matched; 1SMA5930BT3G: matched; 1SMA5931BT3G: matched
Impedance4.5 Ω7.0 Ω--7.0 Ω — Higher impedance may affect regulation performance.
ManufactureronsemiZHIDE-onsemiZHIDE / onsemi — Cross-vendor alternative.; 1SMA5930BT3G: Same manufacturer and product family.

Application & sourcing insights

Questions & answers

The best alternative depends on your circuit's flexibility. SMA4740A offers the same 10V rating in an SMA package but with a lower 1W power limit. If your design can tolerate a lower power rating, this is a strong candidate for evaluation.