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Littelfuse Inc. 1.5SMC350A — Circuit Protection

Littelfuse 1.5SMC350A TVS Diode, 300V Standoff, DO-214AB

MPN1.5SMC350A
Active

Littelfuse Inc. 1.5SMC series Zener TVS diode, 1.5SMC350A, 1500W peak pulse power, 300V reverse standoff, 482V clamping, unidirectional, DO-214AB SMC package, surface mount.

$0.8500Ref. price · indicative, final on quote
Littelfuse Inc. 1.5SMC350A datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

1.5SMC350A specifications
ParameterValue
TypeZener
Series1.5SMC
MountingSurface Mount
Voltage - breakdown332V
Voltage - clamping (Max) @ ipp482V
Voltage - reverse standoff300V
Current - peak pulse (10/1000μs)3.2A
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

1.5 kW pulse rating and clamping at 482 V

The 1.5SMC350A is a 1500 W peak pulse power TVS diode from the Littelfuse 1.5SMC series, rated for a 10/1000 µs waveform. This is a unidirectional Zener-type suppressor — one channel, cathode band marked on the DO-214AB body. No power line protection flag means it is intended for signal or low-voltage DC bus protection, not mains AC clamping.

Package and board-fit for field replacement

Housed in the standard DO-214AB (SMC) package, the same footprint as the SMCJ series. The body is large enough to hand-solder with a standard iron — no hot-air station required for a field swap. Polarity is marked with a cathode band on the body; the anode side is the tab. On a single-sided board, the tab pad should get a generous copper pour to sink the 1500 W pulse heat into the board.

Frequently asked questions

What package does the 1.5SMC350A come in, and can I hand-solder it?

Yes, the body is large enough for hand-soldering with a standard iron — no hot-air station needed. The cathode band marks polarity.