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Best Alternatives to MMBD1501A

Package: TO-236-3, SC-59, SOT-23-3onsemiDiodes - Rectifiers - SinglePackage: Tape & Reel (TR); Cut Tape (CT); Digi-Reel®Product Status: ActiveVoltage - DC Reverse (Vr) (Max): 200 VCurrent - Average Rectified (Io): 200mAVoltage - Forward (Vf) (Max) @ If: 1.1 V @ 200 mA

MMBD1501A is a 200V, 200mA single switching diode in a SOT-23 package. This page provides an engineering review of potential alternatives, focusing on electrical and mechanical compatibility for your design.

AI replacement insight

Package riskmedium

While the SOT-23 package matches, the pinout (anode/cathode assignment) must be verified.

Electrical risklow

Several candidates match or exceed the voltage and current ratings of the target.

Sourcing risklow

Multiple manufacturers produce suitable alternatives for this common diode type.

Can it be replaced directly?

Direct replacement for MMBD1501A should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

BAS20LT1G by onsemi offers the closest parametric match. Verify pinout before substitution.

Main risk

Pinout mismatch is the primary risk. SOT-23 packages can have different internal connections.

Recommended alternatives

4
BAS20LT1G package
BAS20LT1G

onsemi

Needs validationlow risk

Excellent parametric match from the same manufacturer. High potential, but pinout must be verified.

View details

Alternative comparison matrix

Feature / factorMMBD1501ABAS20LT1GBAS21LT1GMMBD1503ACompatibility / risk
PackageSOT-23SOT-23 (TO-236)SOT-23 (TO-236)SOT-23SOT-23 (TO-236) — Form factor matches.; BAS21LT1G: Form factor matches.; MMBD1503A: Form factor matches.; BAS21S: Form factor matches.
Pinout33333 — Pin count matches, but pin functions must be verified.; BAS21LT1G: Pin count matches, but pin functions must be verified.; MMBD1503A: Pin count matches, but pin functions must be verified.; BAS21S: Pin count matches, but pin functions must be verified.
Voltage200V200V250V200V200V / 250V — Reverse voltage matches.; BAS21LT1G: Higher voltage rating provides more margin.; MMBD1503A: Reverse voltage matches.; BAS21S: Higher voltage rating provides more margin.
Current200mA200mA200mA200mA200mA — Forward current matches.; BAS21LT1G: Forward current matches.; MMBD1503A: Forward current matches.; BAS21S: Forward current matches.
ManufactureronsemionsemionsemiFUXINSEMIonsemi / FUXINSEMI — Same manufacturer as target.; BAS21LT1G: Same manufacturer as target.; MMBD1503A: Cross-vendor alternative.
Power~350mW (typical)---225mW — Lower power rating may be a risk.

Application & sourcing insights

Questions & answers

Verified drop-in options for MMBD1501A 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.