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Vishay General Semiconductor - Diodes Division 1.5SMC540AHE3_AIH — Circuit Protection

1.5SMC540AHE3_AIH Vishay TVS, 1500W, 459V Standoff, AEC-Q101

MPN1.5SMC540AHE3_AIH
Active

Vishay General Semiconductor - Diodes Division, Automotive AEC-Q101 1.5SMC TransZorb® series, Zener TVS diode, 1500W peak pulse power, 459V reverse standoff, 740V clamping, DO-214AB SMC package, Tape & Reel.

Vishay General Semiconductor - Diodes Division 1.5SMC540AHE3_AIH datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

1.5SMC540AHE3_AIH 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)
ApplicationsAutomotive
CaseDO-214AB, SMC
Unidirectional channels1

Product details

1500W surge clamp for 459V automotive rails

The 1.5SMC540AHE3_AIH: It is a unidirectional device, so the cathode band must be oriented toward the protected rail.

The copper pad area under the cathode tab sets the junction-to-ambient thermal resistance — for a 1500W 10/1000µs pulse, the standard 1 oz copper pad on FR-4 keeps the junction rise within the 150°C limit. Tape & Reel packaging supports automated pick-and-place.

No pin-compatible second-source is listed, but the 1.5SMC series covers the same footprint with different standoff voltages if the protection threshold needs adjustment.

Frequently asked questions

What is the 1.5SMC540AHE3_AIH used for?

It protects 459V DC rails from voltage transients up to 740V clamping. Typical applications include automotive 24V and 48V power distribution, battery management systems, and motor drive circuits where load-dump or inductive kickback can exceed the rail voltage. The AEC-Q101 grade ensures it survives the under-hood thermal cycle.

What compliance documentation is available for this part?

As an AEC-Q101 qualified device, Vishay provides production-part approval process (PPAP) documentation, RoHS compliance data, and material declaration sheets on request. The TransZorb® series is UL recognized under file E54229.