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Vishay General Semiconductor - Diodes Division 1.5SMC300AHM3_A/H — Circuit Protection

1.5SMC300AHM3_A/H Vishay TVS, 1.5kW, 256V Standoff

MPN1.5SMC300AHM3_A/H
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Vishay General Semiconductor - Diodes Division, 1.5SMC series, Automotive AEC-Q101 TransZorb® TVS, Type Zener, 1500W, 256V Reverse Standoff, DO-214AB SMC, Tape & Reel.

Vishay General Semiconductor - Diodes Division 1.5SMC300AHM3_A/H datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

1.5SMC300AHM3_A/H specifications
ParameterValue
TypeZener
SeriesAutomotive, AEC-Q101, 1.5SMC, TransZorb®
MountingSurface Mount
Voltage - breakdown285V
Voltage - clamping (Max) @ ipp414V
Voltage - reverse standoff256V
Current - peak pulse (10/1000μs)3.6A
Power - peak pulse1500W (1.5kW)
Power line protectionNo
Operating temperature-65°C~150°C(TJ)
PackageTape & Reel (TR)
ApplicationsAutomotive, Telecom
CaseDO-214AB, SMC
Unidirectional channels1

Product details

The 1.5SMC300AHM3_A/H is a 1500W peak-pulse-power TVS diode from Vishay's 1.5SMC series, qualified to AEC-Q101 for automotive applications. It is a unidirectional Zener-type suppressor in the DO-214AB (SMC) package.

Automotive-grade transient protection

With a 1500W peak pulse power rating at 10/1000µs, the 1.5SMC300AHM3_A/H clamps transients like load-dump and inductive kickback on 24V or 48V vehicle buses. The 414V clamping ceiling keeps the downstream circuitry below its breakdown threshold during a surge event.

Frequently asked questions

What is the closest pin-compatible alternative to 1.5SMC300AHM3_A/H in this Circuit Protection family?

The base product number 1.5SMC300 covers the non-automotive variant of this TVS. The 1.5SMC300AHM3_A/H is the AEC-Q101 qualified version — the standard 1.5SMC300 (without the 'A' suffix) is electrically identical but lacks the automotive-grade screening. Both share the same DO-214AB footprint and 1500W power rating.

What compliance documentation does Vishay provide for 1.5SMC300AHM3_A/H?

As an AEC-Q101 qualified part, this TVS diode is supplied with full PPAP documentation upon request, including the qualification test report and the material declaration. The part is RoHS-compliant and halogen-free per Vishay's standard compliance statement for the 1.5SMC series.