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STMicroelectronics SMBJ22A-TR — Circuit Protection

STMicroelectronics SMBJ22A-TR TVS Diode, 600W, DO-214AA

MPNSMBJ22A-TR
Active

STMicroelectronics SMBJ, TRANSIL™, TVS Diode, Type Zener, 600W Peak Pulse Power, 22V Reverse Standoff, 24.4V Breakdown, 35.5V Clamping, 1 Unidirectional Channel, DO-214AA SMB Surface Mount, -55°C to 150°C.

$0.4300Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SMBJ22A-TR specifications
ParameterValue
TypeZener
SeriesSMBJ, TRANSIL™
MountingSurface Mount
Voltage - breakdown24.4V
Voltage - clamping (Max) @ ipp35.5V
Voltage - reverse standoff22V
Current - peak pulse (10/1000μs)17.7A
Power - peak pulse600W
Power line protectionNo
Operating temperature-55°C~150°C(TJ)
PackageTape & Reel (TR); Cut Tape (CT)
ApplicationsGeneral Purpose
CaseDO-214AA, SMB
Unidirectional channels1

Product details

It handles 600 W peak pulse power per the 10/1000 µs waveform, with a breakdown voltage of 24.4 V minimum and clamping at 35.5 V maximum at the rated 17.7 A peak pulse current. The DO-214AA SMB package is surface-mount, rated for operating junction temperatures from -55°C to 150°C. This part is a general-purpose transient suppressor for DC power buses, I/O lines, and low-voltage supply rails in industrial, telecom, and automotive-adjacent environments.

The 22 V reverse standoff voltage means the diode does not conduct at normal rail levels up to 22 V. Breakdown starts at 24.4 V minimum, so a 24 V regulated bus is too close — this part is sized for a 22 V or lower rail. The 35.5 V clamping voltage at 17.7 A peak pulse current gives the protected circuit a hard ceiling; downstream components need a voltage rating above that clamp level to survive a strike.

Frequently asked questions

What package does SMBJ22A-TR come in?

It comes in a DO-214AA SMB surface-mount package.

Is SMBJ22A-TR bidirectional?

No, it is a unidirectional TVS diode with one channel.

What is the peak pulse power rating of SMBJ22A-TR?

The peak pulse power rating is 600 W for a 10/1000 µs waveform.