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Littelfuse Inc. 1.5SMC550A — Circuit Protection

Littelfuse 1.5SMC550A TVS Diode, 1.5kW, 495V Standoff

MPN1.5SMC550A
Active

Littelfuse Inc. 1.5SMC series Zener TVS diode, 1.5SMC550A, 1500W peak pulse power, 495V reverse standoff, 760V clamping, DO-214AB SMC package, surface mount, unidirectional.

$0.8500Ref. price · indicative, final on quote
Littelfuse Inc. 1.5SMC550A datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

1.5SMC550A specifications
ParameterValue
TypeZener
Series1.5SMC
MountingSurface Mount
Voltage - breakdown522.5V
Voltage - clamping (Max) @ ipp760V
Voltage - reverse standoff495V
Current - peak pulse (10/1000μs)2A
Power - peak pulse1500W (1.5kW)
Power line protectionNo
Operating temperature-55°C~150°C(TJ)
PackageTape & Reel (TR); Cut Tape (CT)
ApplicationsGeneral Purpose
CaseDO-214AB, SMC
Unidirectional channels1

Product details

The 1.5SMC550A: The unidirectional channel (single TVS diode) biases for positive-going transients relative to ground; the cathode is the protected line.

Package and board-fit — DO-214AB SMC footprint

The supplier device package is listed as DO-214AB (SMCJ), meaning the same footprint accepts both Littelfuse and industry-standard SMCJ-format devices. The package supports Tape & Reel or Cut Tape handling — the reel quantity is set by the reel diameter, not the part itself. No power line protection (the device is not rated for direct AC mains clamping) — the 1.5SMC550A is intended for DC rail or signal-line transient suppression where the working voltage stays below 495V.

Frequently asked questions

What compliance documentation does Littelfuse Inc. provide for 1.5SMC550A?

The 1.5SMC550A is a standard catalog TVS diode. Littelfuse provides RoHS and REACH compliance documentation through its standard compliance portal. No UL or IEC certification is listed in the product record for this specific order code.