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Vishay General Semiconductor - Diodes Division 1.5SMC400A-M3/57T — Circuit Protection

1.5SMC400A-M3/57T Vishay TVS, 1500W, 342V Standoff, DO-214AB

MPN1.5SMC400A-M3/57T
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Vishay General Semiconductor - Diodes Division 1.5SMC, TransZorb® series, Zener TVS diode, 1.5SMC400A-M3/57T, 1500W peak pulse, 342V reverse standoff, DO-214AB (SMC) surface mount package.

$0.5833Ref. price · indicative, final on quote
Vishay General Semiconductor - Diodes Division 1.5SMC400A-M3/57T datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

1.5SMC400A-M3/57T specifications
ParameterValue
TypeZener
Series1.5SMC, TransZorb®
MountingSurface Mount
Voltage - breakdown380V
Voltage - clamping (Max) @ ipp548V
Voltage - reverse standoff342V
Current - peak pulse (10/1000μs)2.7A
Power - peak pulse1500W (1.5kW)
Power line protectionNo
Operating temperature-65°C~150°C(TJ)
PackageTape & Reel (TR)
ApplicationsGeneral Purpose
CaseDO-214AB, SMC
Unidirectional channels1

Product details

Standoff voltage and breakdown threshold

The 1.5SMC400A-M3/57T: Breakdown starts at 380V minimum, so a 380V transient is where the device begins conducting. The 38V gap between standoff and breakdown gives margin for normal line ripple without the TVS clipping prematurely. The 150°C TJ ceiling means the TVS can absorb repetitive pulses in a hot enclosure without derating the peak power below the 1500W headline figure, provided the average power stays within the thermal limit of the DO-214AB package.

No official successor or cross-reference is listed, so the 1.5SMC400A-M3/57T is the current production variant for new builds and BOM replenishment.