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Best Alternatives to 1N4002

Package: SMA (DO-214AC)Diotec SemiconductorRectifiersMaximum repetitive peak reverse voltage: 100 VMaximum RMS voltage: 70 VMaximum DC blocking voltage: 100 VAverage forward rectified current: 1 APeak forward surge current: 30 A

The 1N4002 is a common 100V, 1A standard recovery rectifier in a DO-214AC (SMA) package, used for general-purpose rectification. When seeking a replacement, prioritize parts with the same package, standard recovery time, and equal or greater voltage and current ratings.

AI replacement insight

Electrical risklow

Low if sticking to standard recovery types with higher ratings. Medium if using a fast recovery type.

Package risklow

Many alternatives exist in the same DO-214AC (SMA) package.

Sourcing risklow

The 1N400x series and its substitutes are widely available from multiple manufacturers.

Can it be replaced directly?

Direct replacement for 1N4002 should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

Upgrade to a higher voltage part in the same family, like S2M or GS1M-LTP, which offer better electrical stress tolerance in the same package.

Main risk

The main risk is substituting with a fast-recovery diode (like US1x series) when the circuit is designed for a standard-recovery diode, which can alter performance.

Recommended alternatives

6
GS1M-LTP package
GS1M-LTP

Micro Commercial Co

Needs validationlow risk

A strong pin-compatible alternative with much higher voltage in the same package.

View details

Alternative comparison matrix

Feature / factor1N4002GS1M-LTPS2MHS1DCompatibility / risk
PackageDO-214AC (SMA)DO-214AC (SMA)DO-214AC (SMA)DO-214AC (SMA)DO-214AC (SMA) — Same package and pin count.; S2M: Same package and pin count.; HS1D: Same package and pin count.; US1J: Same package and pin count.
Voltage100V1000V1000V200V1000V / 200V / 600V — Candidate has significantly higher voltage rating.; S2M: Candidate has significantly higher voltage rating.; HS1D: Candidate has higher voltage rating.; US1J: Candidate has significantly higher voltage rating.
Current1.0A1.0A2.0A1.0A1.0A / 2.0A — Current rating is identical.; S2M: Candidate has higher current rating.; HS1D: Current rating is identical.; US1J: Current rating is identical.
Recovery TimeStandardStandardStandardFast Recovery (~50ns)Standard / Fast Recovery (~50ns) / Fast Recovery (~75ns) — Both are standard recovery diodes.; S2M: Both are standard recovery diodes.; HS1D: Candidate is a fast recovery diode, target is standard.; US1J: Candidate is a fast recovery diode, target is standard.

Application & sourcing insights

Questions & answers

Verified drop-in options for 1N4002 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.