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Vishay General Semiconductor - Diodes Division 1.5SMC540A-E3/57T — Circuit Protection

1.5SMC540A-E3/57T Vishay Zener TVS, 1.5kW, 740V Clamp

MPN1.5SMC540A-E3/57T
Obsolete

Vishay General Semiconductor - Diodes Division, 1.5SMC TransZorb® series, Zener TVS diode, 1.5SMC540A-/57T, 1.5kW peak pulse power, 740V clamping, DO-214AB SMC package, Tape & Reel.

$0.4874Ref. price · indicative, final on quote
Vishay General Semiconductor - Diodes Division 1.5SMC540A-E3/57T datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

1.5SMC540A-E3/57T specifications
ParameterValue
TypeZener
Series1.5SMC, 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)
ApplicationsGeneral Purpose
CaseDO-214AB, SMC
Unidirectional channels1

Product details

EOL — sourcing through independent channels

The 1.5SMC540A-E3/57T: Vishay has marked the 1.5SMC540A-/57T as obsolete. Read the PCN before you buy: verify date-code provenance against the last-time-buy window.

Clamping performance for a 459V rail

When a transient hits, breakdown triggers at a minimum of 513V and the device clamps the surge to 740V maximum at the rated peak pulse current of 2.03A (10/1000µs waveform). The 1.5kW peak pulse power rating means it absorbs a 1.5kW transient for that 1ms duration without failing open or short.

Package and temperature grade

No power-line protection rating (the device is intended for signal or low-power DC bus clamping, not AC mains).

Frequently asked questions

What package does the 1.5SMC540A-/57T use?

The supplier device package is DO-214AB.