Is there a pin-compatible replacement for S1G-13-F?

While several parts like RS1M-13-F and ES1G-13-F share the same SMA package and pinout, differences in electrical characteristics like recovery time and forward voltage mean they are not guaranteed drop-in replacements. Engineering review is required.

What risks should I check before replacing S1G-13-F?

Verify the replacement's reverse voltage (>=400V) and forward current (>=1A). Check the forward voltage (Vf) for thermal impact and the reverse recovery time (trr) for potential EMI effects, as the target is a standard recovery diode.

S1G-13-F Alternatives, Datasheet & Cross Reference | Diodes Incorporated

S1G-13-F is a standard 400V, 1A general-purpose rectifier in a common SMA package. When seeking alternatives, key parameters to match are package, voltage, current, and diode type (standard recovery).

AI replacement insight

Electrical riskmedium

Differences in forward voltage (Vf) and recovery time (trr) require review.

Package risklow

SMA is a standard package with many compatible options.

Can it be replaced directly?

No confirmed direct drop-in replacement exists. RS1M-13-F is a strong functional alternative, but requires review of its slightly higher forward voltage and faster recovery time.

Best replacement path

RS1M-13-F offers a higher voltage rating in the same package with similar characteristics, making it a strong candidate.

Main risk

The main risk is substituting with a diode of a different type (e.g., fast, ultra-fast) which can alter circuit performance, or one with a higher forward voltage (Vf) which increases power dissipation.

Recommended alternatives

A strong alternative in the same SMA package with a much higher voltage rating and similar electricals.

View details

Alternative comparison matrix

Feature / factor	S1G-13-F	RS1M-13-F	ES1G-13-F	US1J-13-F	Compatibility / risk
Package	SMA	SMA	SMA	SMA	SMA — Same package and pin count.; ES1G-13-F: Same package and pin count.; US1J-13-F: Same package and pin count.
Voltage	400V	1000V	400V	600V	1000V / 400V / 600V — Higher voltage rating is a safe upgrade.; ES1G-13-F: Reverse voltage matches.; US1J-13-F: Higher voltage rating is a safe upgrade.
Current	1.0A	1.0A	1.0A	1.0A	1.0A — Forward current matches.; ES1G-13-F: Forward current matches.; US1J-13-F: Forward current matches.
Forward Voltage	1.1V	1.3V	1.25V	1.7V	1.3V / 1.25V / 1.7V — Slightly higher Vf may slightly increase power loss.; ES1G-13-F: Slightly higher Vf may slightly increase power loss.; US1J-13-F: Significantly higher Vf increases power loss.
Recovery Time	1800ns	500ns	25ns	75ns	500ns / 25ns / 75ns — Faster recovery is generally an improvement.; ES1G-13-F: Super-fast vs standard recovery; may affect EMI.; US1J-13-F: Ultra-fast vs standard recovery; may affect EMI.

Application & sourcing insights

Questions & answers

RS1M-13-F is a strong alternative from the same manufacturer. It has a higher voltage rating (1000V) and similar performance, though its forward voltage is slightly higher.