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Littelfuse Inc. 1.5SMC300A — Circuit Protection

Littelfuse 1.5SMC300A TVS Diode, 1500W, 256V Standoff

MPN1.5SMC300A
Active

Littelfuse Inc. 1.5SMC series Zener TVS diode, 1.5SMC300A, 1500W peak pulse power, 256V reverse standoff, 414V clamping, DO-214AB SMC package, unidirectional.

$0.8600Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

1.5SMC300A specifications
ParameterValue
TypeZener
Series1.5SMC
MountingSurface Mount
Voltage - breakdown285V
Voltage - clamping (Max) @ ipp414V
Voltage - reverse standoff256V
Current - peak pulse (10/1000μs)3.7A
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

1500 W peak pulse — the clamping threshold for 256 V rails

The 1.5SMC300A: This is a signal- or low-power-data-line protector — the "No Power Line Protection" flag confirms it is not designed for mains or high-energy AC supply rails. Use it on 256 V DC buses, telecom line cards, or industrial sensor power inputs where the energy in a lightning-induced surge or inductive kickback stays within the 1500 W envelope.

DO-214AB SMC — footprint and temperature range

Cut Tape works for prototype or low-volume builds where a full reel is excess.

Active lifecycle — no end-of-life watch needed

The active status means lead times follow standard semiconductor supply — no premium for end-of-life inventory.

Frequently asked questions

What package does 1.5SMC300A use?

It uses the DO-214AB (SMC) surface-mount package, also designated as the SMCJ supplier device package. The mounting type is surface mount.