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STMicroelectronics SMBJ24A-TR — Circuit Protection

SMBJ24A-TR TVS Diode, 24 V Standoff, 38.9 V Clamp, 600 W

MPNSMBJ24A-TR
Active

STMicroelectronics SMBJ, TRANSIL™ series, TVS Zener diode, unidirectional, 24 V reverse standoff, 38.9 V clamp, 600 W peak pulse power, DO-214AA (SMB) package, -55°C to 150°C.

$0.4500Ref. price · indicative, final on quote
STMicroelectronics SMBJ24A-TR datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SMBJ24A-TR specifications
ParameterValue
TypeZener
SeriesSMBJ, TRANSIL™
MountingSurface Mount
Voltage - breakdown26.7V
Voltage - clamping (Max) @ ipp38.9V
Voltage - reverse standoff24V
Current - peak pulse (10/1000μs)16A
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

24 V rail protection — 38.9 V clamp ceiling

Its 38.9 V maximum clamping voltage at the 16 A peak pulse current (10/1000 µs waveform) sets the voltage the downstream circuitry must survive — a key parameter for selecting the TVS for a given bus or power input.

600 W peak pulse — energy handling for industrial transients

The 26.7 V minimum breakdown voltage ensures the device starts conducting before the rail exceeds safe limits.

DO-214AA (SMB) — surface-mount footprint

Housed in the DO-214AA (SMB) package, the SMBJ24A-TR is a surface-mount device suitable for automated assembly.

Frequently asked questions

Is SMBJ24A-TR unidirectional or bidirectional?

The SMBJ24A-TR is a unidirectional TVS diode — it protects one polarity rail. For bidirectional protection on AC or bipolar lines, the SMBJ24CA (bidirectional variant) would be the equivalent choice.