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Best Alternatives to BAS21HT1G

Package: SC-76, SOD-323onsemiDiodes - Rectifiers - SinglePackage: Tape & Reel (TR); Cut Tape (CT); Digi-Reel®Voltage - DC Reverse (Vr) (Max): 250 VCurrent - Average Rectified (Io): 200mAVoltage - Forward (Vf) (Max) @ If: 1.25 V @ 200 mACurrent - Reverse Leakage @ Vr: 100 nA @ 200 V

BAS21HT1G is a 250V, 200mA AEC-Q101 qualified fast switching diode in a SOD-323 package. Finding a substitute requires matching its high voltage, fast recovery time, and automotive qualification.

AI replacement insight

Electrical risklow

Low if trr, voltage, and current are matched.

Package risklow

SOD-323 is a standard package.

Sourcing riskhigh

High if AEC-Q101 is required for an automotive application.

Can it be replaced directly?

Direct replacement for BAS21HT1G should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

The best path is finding another BAS21H variant from a reputable manufacturer, which offers identical electrical performance.

Main risk

The main risks are mismatched diode type (e.g., standard vs. fast switching) and missing automotive (AEC-Q101) qualification.

Recommended alternatives

2
BAS21H package
BAS21H

LGE

Needs validationlow risk

Electrically identical fast switching diode in the same package, but lacks automotive qualification.

View details

Alternative comparison matrix

Feature / factorBAS21HT1GBAS21HES1JLWSAlt 3Compatibility / risk
PackageSOD-323SOD-323SOD-323SOD-323 — Same package and pin count.; ES1JLWS: Same package and pin count.
Voltage250V250V600V250V / 600V — Reverse voltage matches.; ES1JLWS: Higher voltage rating provides more margin.
Current200mA200mA0.5A200mA / 0.5A — Forward current matches.; ES1JLWS: Higher current rating provides more margin.
Trr50ns50ns35ns50ns / 35ns — Reverse recovery time matches.; ES1JLWS: Faster recovery time is generally better.
ApplicationAEC-Q101Not specified-Not specified — Target is AEC-Q101 qualified.
Vf1.25V-1.68V1.68V — Higher forward voltage increases power loss.

Application & sourcing insights

Questions & answers

Verified drop-in options for BAS21HT1G 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.