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Littelfuse Inc. 1.5SMC20AT3G — Circuit Protection

1.5SMC20AT3G Littelfuse TVS Diode, 1500W, DO-214AB

MPN1.5SMC20AT3G
Obsolete

Littelfuse Inc. 1.5SMC series Zener TVS diode, 1.5SMC20AT3G, 1500W peak pulse power, 27.7V clamping, 17.1V reverse standoff, DO-214AB SMC package, surface mount, unidirectional.

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

1.5SMC20AT3G specifications
ParameterValue
TypeZener
Series1.5SMC
MountingSurface Mount
Voltage - breakdown19V
Voltage - clamping (Max) @ ipp27.7V
Voltage - reverse standoff17.1V
Current - peak pulse (10/1000μs)54A
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

Protection envelope and board-fit

The 1.5SMC20AT3G: A single unidirectional channel with a 17.1V reverse standoff voltage means it begins conducting above that DC level, clamping transients on signal or DC power rails that stay below 17.1V in normal operation.

Sourcing an obsolete part

Sourcing runs through independent distribution channels: sealed reels with consistent date-codes are available against an RFQ, with the lot condition and date-code spread confirmed at quote time.