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Best Alternatives to STPS1150A

Package: DO-214AC, SMASTMicroelectronicsDiodes - Rectifiers - SinglePackage: Tape & Reel (TR); Cut Tape (CT); Digi-Reel®Voltage - DC Reverse (Vr) (Max): 150 VCurrent - Average Rectified (Io): 1AVoltage - Forward (Vf) (Max) @ If: 820 mV @ 1 ACurrent - Reverse Leakage @ Vr: 1 µA @ 150 V

Finding a substitute for the STPS1150A Schottky diode involves matching the SMA package, 150V voltage, and 1A current. Several pin-compatible upgrades with higher ratings are available.

AI replacement insight

Electrical risklow

Candidates have higher V/I ratings, but Vf may be slightly higher. Verify datasheet for impact on efficiency.

Package risklow

All recommended alternatives use the same or compatible SMA/DO-214AC package.

Can it be replaced directly?

Direct replacement for STPS1150A should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

Start with Datasheet verified or Strong match candidates for STPS1150A, then review parametric alternatives for package and electrical fit.

Main risk

The primary risk is a potential increase in forward voltage (Vf), which could reduce system efficiency and increase heat.

Recommended alternatives

3
SS5200 package
SS5200

MDD(Microdiode Semiconductor)

Needs validationlow risk

A pin-compatible Schottky diode with higher voltage (200V) and current (5A) ratings.

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Alternative comparison matrix

Feature / factorSTPS1150ASS5200SS320SS320ACompatibility / risk
PackageSMASMA (DO-214AC)DO-214AC (SMA)SMA (DO-214AC)SMA (DO-214AC) / DO-214AC (SMA) — Package is form-fit compatible.; SS320: Package is form-fit compatible.; SS320A: Package is form-fit compatible.
Diode TechnologySchottkySchottkySchottkySchottkySchottky — Both are Schottky diodes, ensuring similar switching behavior.; SS320: Both are Schottky diodes.; SS320A: Both are Schottky diodes.
Voltage150V200V200V200V200V — Higher voltage rating provides more design margin.; SS320: Higher voltage rating provides more margin.; SS320A: Higher voltage rating provides more margin.
Current1A5A3A3A5A / 3A — Higher current rating offers increased robustness.; SS320: Higher current rating offers increased robustness.; SS320A: Higher current rating offers increased robustness.
Forward Voltage0.62V~0.7V (est. @1A)0.92V (at rated current)~0.8V (est. @1A)~0.7V (est. @1A) / 0.92V (at rated current) / ~0.8V (est. @1A) — Vf at 1A may be slightly higher. Verify in datasheet for efficiency impact.; SS320: Forward voltage is likely higher than target at 1A, impacting efficiency.; SS320A: Forward voltage is likely higher, impacting efficiency. Verify in datasheet.

Application & sourcing insights

Questions & answers

Verified drop-in options for STPS1150A 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.