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Best Alternatives to S1A-13-F

Package: DO-214AC, SMADiodes IncorporatedDiodes - Rectifiers - SingleSeries: -Package: Tape & Reel (TR); Cut Tape (CT); Digi-Reel®Voltage - DC Reverse (Vr) (Max): 50 VCurrent - Average Rectified (Io): 1AVoltage - Forward (Vf) (Max) @ If: 1.1 V @ 1 A

Find replacements for the S1A-13-F, a 1A, 50V standard rectifier in an SMA package. Explore pin-compatible upgrades and functional alternatives with improved voltage and speed characteristics.

AI replacement insight

Electrical riskmedium

Switching from standard to fast/Schottky recovery requires review of Vf, trr, and reverse leakage.

Package risklow

All suggested alternatives use the same SMA package, ensuring form-fit compatibility.

Can it be replaced directly?

While no exact cross-reference is listed, several parts like US1D are strong upgrade candidates. They match the package and current rating while offering higher voltage and faster switching speed.

Best replacement path

The safest upgrade path is to use an ultra-fast diode like US1D or STTH1R06A, which offer higher voltage ratings in the same package. The faster speed is often an improvement but should be checked for EMI.

Main risk

The primary risk is changing the diode's recovery time. Replacing a slow, standard diode with an ultra-fast or Schottky type can alter circuit behavior, potentially causing EMI or issues related to reverse leakage current.

Recommended alternatives

4
STTH1R06A package
STTH1R06A

STMicroelectronics

Needs validationlow risk

A form-fit upgrade with a much higher voltage rating and ultrafast recovery.

View details

Alternative comparison matrix

Feature / factorS1A-13-FSTTH1R06AUS1DSS56ACompatibility / risk
PackageSMASMASMASMA (DO-214AC)SMA / SMA (DO-214AC) — Package is a form-fit match.; US1D: Package is a form-fit match.; SS56A: Package is a form-fit match.; STPS1150A: Package is a form-fit match.
Voltage50V600V200V60V600V / 200V / 60V / 150V — Significantly higher voltage rating.; US1D: Higher voltage rating provides more margin.; SS56A: Higher voltage rating.; STPS1150A: Higher voltage rating.
Current1.0A1.0A1.0A5.0A1.0A / 5.0A — Current rating matches.; US1D: Current rating matches the target.; SS56A: Significantly higher current rating.; STPS1150A: Current rating matches.
Diode TypeStandard (trr ~3µs)Ultrafast (trr ~25ns)Ultra-Fast (trr ~50ns)SchottkyUltrafast (trr ~25ns) / Ultra-Fast (trr ~50ns) / Schottky — Much faster recovery than target.; US1D: Much faster recovery than target's standard speed.; SS56A: Different technology (Schottky vs. Standard).; STPS1150A: Different technology (Schottky vs. Standard).
Forward Voltage~1.1V---~0.62V — Lower Vf improves efficiency but changes behavior.

Application & sourcing insights

Questions & answers

The best alternatives for S1A-13-F are upgrade-path diodes like US1D or STTH1R06A. They are in the same SMA package and offer higher voltage ratings and faster performance.