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Littelfuse Inc. 1.5SMC43C — Circuit Protection

Littelfuse 1.5SMC43C TVS Diode, 1.5kW Bidirectional

MPN1.5SMC43C
Obsolete

Littelfuse Inc. 1.5SMC series Zener TVS diode, bidirectional, 1500W peak pulse power, DO-214AB (SMC) surface mount, 36.8V reverse standoff, 62.27V clamping.

Littelfuse Inc. 1.5SMC43C datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

1.5SMC43C specifications
ParameterValue
TypeZener
Series1.5SMC
MountingSurface Mount
Voltage - breakdown38.75V
Voltage - clamping (Max) @ ipp62.27V
Voltage - reverse standoff36.8V
Current - peak pulse (10/1000μs)25.6A
Power - peak pulse1500W (1.5kW)
Power line protectionNo
Operating temperature-55°C~150°C(TJ)
PackageTape & Reel (TR)
ApplicationsGeneral Purpose
CaseDO-214AB, SMC
Bidirectional channels1

Product details

Zener TVS for 36.8V rail protection

The 1.5SMC43C: It clamps a 36.8V nominal rail to 62.27V maximum during a transient, passing up to 25.6A of surge current. The minimum breakdown voltage is 38.75V, so the part begins conducting before the rail exceeds that threshold. This bidirectional configuration protects circuits where the signal or power rail swings both positive and negative relative to ground.

Littelfuse lists the 1.5SMC43C as Obsolete. Date-code provenance and lot traceability are verified before shipment.