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Vishay General Semiconductor - Diodes Division 1.5SMC540AHE3_A/H — Circuit Protection

1.5SMC540AHE3_A/H Vishay TVS, 1500W, 740V Clamp, DO-214AB

MPN1.5SMC540AHE3_A/H
Obsolete

Vishay General Semiconductor, Automotive AEC-Q101 1.5SMC TransZorb® series, Zener TVS diode, 1.5SMC540AHE3_A/H, 1500W peak pulse, 740V clamp, DO-214AB SMC surface mount.

Vishay General Semiconductor - Diodes Division 1.5SMC540AHE3_A/H datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

1.5SMC540AHE3_A/H specifications
ParameterValue
TypeZener
SeriesAutomotive, AEC-Q101, 1.5SMC, TransZorb®
MountingSurface Mount
Voltage - breakdown513V
Voltage - clamping (Max) @ ipp740V
Voltage - reverse standoff459V
Current - peak pulse (10/1000μs)2.03A
Power - peak pulse1500W (1.5kW)
Power line protectionNo
Operating temperature-65°C~150°C(TJ)
PackageTape & Reel (TR); Cut Tape (CT)
ApplicationsAutomotive
CaseDO-214AB, SMC
Unidirectional channels1

Product details

1500 W peak pulse — what the clamp chain means for the board

The 1.5SMC540AHE3_A/H: The 740 V clamp ceiling is the hard limit the TVS holds the transient to — downstream components rated for 800 V or higher survive the surge without avalanche breakdown themselves.

AEC-Q101 and the -65 to 150 °C operating envelope

The DO-214AB (SMC) package uses the same footprint as the standard SMCJ outline — the cathode band and pin 1 orientation match the industry-standard SMC land pattern, so a board laid out for a generic SMC TVS accepts this Vishay device without a pad revision.

Frequently asked questions

What is the closest pin-compatible alternative to 1.5SMC540AHE3_A/H in this Circuit Protection family?

Vishay does not publish a direct successor order code for this obsolete part. The DO-214AB (SMC) footprint is standard, so any current-production AEC-Q101 1500 W SMC TVS with a 459 V standoff and ~513 V breakdown is a functional drop-in candidate — confirm the clamp voltage and peak pulse current match the application's surge requirement before substituting.