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STMicroelectronics SM15T100CA — Circuit Protection
STMicroelectronics

STMicro SM15T100CA TVS Diode, 1500W Bidirectional, DO-214AB

MPNSM15T100CA
Active

STMicroelectronics SM15T100CA, TRANSIL™ series, Zener TVS diode, bidirectional, 1500W peak pulse power, 85.5V reverse standoff, 178V clamping, DO-214AB SMC package, surface mount, -55°C to 150°C junction temperature.

$0.9700Ref. price · indicative, final on quote
SM15T100CA datasheet
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MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
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Specifications

SM15T100CA Technical Specifications
ParameterValue
TypeZener
SeriesSM15T, TRANSIL™
Mounting typeSurface Mount
Voltage - breakdown95V
Voltage - clamping (Max) @ ipp178V
Voltage - reverse standoff85.5V
Current - peak pulse (10/1000μs)56A (8/20µs)
Power - peak pulse1500W (1.5kW)
Power line protectionNo
Operating temperature-55°C~150°C(TJ)
PackageTape & Reel (TR); Cut Tape (CT)
ApplicationsGeneral Purpose
CaseDO-214AB, SMC
Bidirectional channels1

Product details

TVS diode for 85.5 V rails — what the ratings mean

The STMicroelectronics SM15T100CA is a bidirectional Zener transient voltage suppressor from the TRANSIL™ series, designed to clamp overvoltage events on a nominal 85.5 V DC rail. Its 1500 W peak pulse power rating (10/1000 µs waveform) means it can absorb a single 56 A surge pulse before the clamping voltage reaches 178 V. This is a protection device, not a regulator — it sits across the rail and stays invisible until the voltage exceeds the 95 V minimum breakdown threshold. The DO-214AB (SMC) surface-mount package handles the thermal transient of a 1500 W pulse without external heatsinking, provided the PCB copper area follows the datasheet's recommended land pattern.

New designs can commit this part without worrying about a sudden discontinuation window. The base part number SM15T100 covers both the bidirectional (CA) and unidirectional (A) variants, all in the same SM15T series.

Frequently asked questions

What is the difference between SM15T100CA and SM15T100A?

SM15T100CA is a bidirectional TVS (single device clamps both polarities), while SM15T100A is the unidirectional version. Both share the same 1500 W peak pulse power, 85.5 V standoff, and DO-214AB package. Choose the CA variant for AC lines or bipolar rails; use the A variant for a single-polarity DC rail where reverse surge protection is not needed.

Is SM15T100CA RoHS compliant?

The SM15T100CA is listed as RoHS compliant per the STMicroelectronics product status. No separate non-RoHS variant is offered in the SM15T series.