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Littelfuse Inc. 1.5SMC540C — Circuit Protection

1.5SMC540C Littelfuse TVS Diode, 1500W, Bidirectional

MPN1.5SMC540C
Obsolete

Littelfuse 1.5SMC series Zener TVS diode, bidirectional, 1500W peak pulse power, 777V clamping, DO-214AB SMC package, Tape & Reel.

Littelfuse Inc. 1.5SMC540C datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

1.5SMC540C specifications
ParameterValue
TypeZener
Series1.5SMC
MountingSurface Mount
Voltage - breakdown486V
Voltage - clamping (Max) @ ipp777V
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)
ApplicationsGeneral Purpose
CaseDO-214AB, SMC
Bidirectional channels1

Product details

The 1.5SMC540C: For a BOM that must stay in the DO-214AB footprint, a parametric search for a 1500 W bidirectional TVS with a 486 V standoff voltage is the starting point, but a board spin may be required.

Clamping voltage and surge rating

A single bidirectional channel handles surges in both polarities — useful on AC signal lines or DC rails where the polarity could reverse during a fault.

The SMC footprint is larger than the SMA/SMB siblings — the extra copper area under the cathode tab helps dissipate the 1500 W pulse without exceeding the junction limit.

Frequently asked questions

What is the closest pin-compatible alternative to 1.5SMC540C in this Circuit Protection family?

Littelfuse does not list an official successor or pin-compatible replacement for the 1.5SMC540C. A parametric search for a 1500 W bidirectional TVS in DO-214AB with a 486 V standoff voltage is the starting point for a substitute, but a board spin may be necessary.

What compliance documentation does Littelfuse Inc. provide for 1.5SMC540C?

For obsolete parts sourced through independent channels, compliance status is confirmed at the time of quote.