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Vishay General Semiconductor - Diodes Division 1.5SMC39A-E3/9AT — Circuit Protection

1.5SMC39A-E3/9AT Vishay TVS, 33.3V Standoff, DO-214AB

MPN1.5SMC39A-E3/9AT
Active

Vishay General Semiconductor 1.5SMC, TransZorb® series, Zener TVS diode, 1.5SMC39A-/9AT, DO-214AB SMC package, 1500W peak pulse power, 33.3V reverse standoff, Tape & Reel.

$0.2266Ref. price · indicative, final on quote
Vishay General Semiconductor - Diodes Division 1.5SMC39A-E3/9AT datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

1.5SMC39A-E3/9AT specifications
ParameterValue
TypeZener
Series1.5SMC, TransZorb®
MountingSurface Mount
Voltage - breakdown37.1V
Voltage - clamping (Max) @ ipp53.9V
Voltage - reverse standoff33.3V
Current - peak pulse (10/1000μs)27.8A
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

Clamping specs and what they mean for the board

The 1.5SMC39A-E3/9AT: The 33.3V reverse standoff voltage means the device stays transparent on a 24V or 28V rail, only clamping when the line exceeds that threshold. The 37.1V minimum breakdown voltage gives a guard band between normal rail transients and the clamping knee.

Package and rework reality

DO-214AB (SMC) package, surface mount — the same footprint as the SMCJ suffix. The copper tab on the bottom side is the cathode; the anode is the opposite end. Pin 1 is the cathode band end, clearly marked on the body.