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Littelfuse Inc. 1.5SMC540CA — Circuit Protection

1.5SMC540CA Littelfuse TVS Diode, 1500W, Bidirectional

MPN1.5SMC540CA
Active

Littelfuse 1.5SMC series Zener TVS diode, 1.5SMC540CA, bidirectional, 1500W peak pulse power, 486V reverse standoff, DO-214AB SMC package, surface mount.

$0.8800Ref. price · indicative, final on quote
Littelfuse Inc. 1.5SMC540CA datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

1.5SMC540CA specifications
ParameterValue
TypeZener
Series1.5SMC
MountingSurface Mount
Voltage - breakdown513V
Voltage - clamping (Max) @ ipp740V
Voltage - reverse standoff486V
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
Bidirectional channels1

Product details

Surge protection for 486V rails

The 1.5SMC540CA: With a 486V reverse standoff voltage and a minimum breakdown voltage of 513V, it protects 480V-class DC buses or AC rectified rails from transient overvoltage events. The clamping voltage at 2A peak pulse current is 740V maximum, meaning the protected rail sees no more than 740V during a surge event before the TVS conducts and shunts the energy. This is the figure that matters for downstream component voltage ratings.

Power line protection is not provided — this is a signal or DC bus protector, not an AC mains suppressor.

Frequently asked questions

Where can I buy the 1.5SMC540CA and get a price?

The 1.5SMC540CA is sourced through independent distribution channels.