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STMicroelectronics SMBJ100CA-TR — Circuit Protection

STMicroelectronics SMBJ100CA-TR TVS Diode

MPNSMBJ100CA-TR
Active

STMicroelectronics SMBJ, TRANSIL™, TVS Diode, SMBJ100CA-TR, Zener Type, Bidirectional, 100V Reverse Standoff, 600W Peak Pulse Power, DO-214AA SMB Package, Surface Mount, -55°C to 150°C.

$0.5000Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SMBJ100CA-TR specifications
ParameterValue
TypeZener
SeriesSMBJ, TRANSIL™
MountingSurface Mount
Voltage - breakdown111V
Voltage - clamping (Max) @ ipp162V
Voltage - reverse standoff100V
Current - peak pulse (10/1000μs)3.8A
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

The clamping voltage peaks at 162 V at the rated 3.8 A peak pulse current, so the downstream circuitry needs to survive that ceiling. It's a Zener-type bidirectional device, meaning it clips both positive and negative spikes symmetrically, which is handy for AC signal lines or unipolar rails where reverse polarity is a risk.

Package and mounting — hand-solderable SMB

Housed in the DO-214AA (SMB) package, this is a surface-mount part with gull-wing leads that are friendly for hand soldering with a fine-tip iron or hot air. The SMB footprint is a common one — you'll find it on many TVS diodes in this power class, so PCB layout reuse is straightforward. No power line protection built in (it's a transient suppressor, not a crowbar), so pair it with a fuse if sustained overvoltage is a concern.

Lifecycle and sourcing — still in active production

No last-time-buy or obsolescence notice to worry about for new designs.

Frequently asked questions

Is SMBJ100CA-TR bidirectional?

Yes, it has one bidirectional channel, so it clamps transients of either polarity symmetrically. That makes it a good fit for AC signal lines or DC rails where reverse voltage events are possible.

What is the peak pulse power of SMBJ100CA-TR?

600 W peak pulse power per the 10/1000 µs waveform. That rating defines its single-pulse surge capacity — enough for secondary protection on 100 V rails in industrial and telecom gear.

What package does SMBJ100CA-TR come in?

DO-214AA (SMB) surface-mount package. It's a standard footprint with gull-wing leads, hand-solderable with basic tools.

What is the closest equivalent to SMBJ100CA-TR?

Within the SMBJ family, the unidirectional variant SMBJ100A-TR is the same silicon but single-direction clamping. For a bidirectional 100 V TVS in the same DO-214AA package, other manufacturers like Littelfuse and Vishay offer pin-compatible parts (e.g., SMBJ100CA series) — verify the clamping voltage and peak pulse current match your derating needs.