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STMicroelectronics SMBJ18CA-TR — Circuit Protection

STMicroelectronics SMBJ18CA-TR TVS Diode, 600W Bidirectional

MPNSMBJ18CA-TR
Active

STMicroelectronics SMBJ18CA-TR, TRANSIL™ series, bidirectional TVS diode, 600W peak pulse power, 18V reverse standoff, 29.2V clamping, DO-214AA (SMB) surface-mount package.

$0.5200Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SMBJ18CA-TR specifications
ParameterValue
TypeZener
SeriesSMBJ, TRANSIL™
MountingSurface Mount
Voltage - breakdown20V
Voltage - clamping (Max) @ ipp29.2V
Voltage - reverse standoff18V
Current - peak pulse (10/1000μs)21.5A
Power - peak pulse600W
Power line protectionNo
Operating temperature-55°C~150°C(TJ)
PackageTape & Reel (TR); Cut Tape (CT)
ApplicationsGeneral Purpose
CaseDO-214AA, SMB
Bidirectional channels1

Product details

TVS diode for 18V rail protection

It delivers 600W peak pulse power per the 10/1000µs waveform, clamping at 29.2V maximum with a 21.5A peak pulse current rating.

The junction operates from -55°C to 150°C, suiting it for environments from cold-start automotive to hot industrial enclosures.

Frequently asked questions

Is SMBJ18CA-TR a bidirectional or unidirectional TVS?

It is a bidirectional TVS diode with a single bidirectional channel, clamping both positive and negative transients on an 18V rail.