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Microchip Technology SMAJ18CE3/TR13 — Circuit Protection

SMAJ18CE3/TR13 – Microchip 500W Zener TVS, 18V Standoff

MPNSMAJ18CE3/TR13
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Microchip Technology SMAJ18CE3/TR13, Zener TVS diode, 500W peak pulse power, 18V reverse standoff, bidirectional, DO-214AC (SMA) surface mount, -65°C to 150°C junction temperature.

$0.1800Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SMAJ18CE3/TR13 specifications
ParameterValue
TypeZener
MountingSurface Mount
Voltage - breakdown20V
Voltage - clamping (Max) @ ipp32.2V
Voltage - reverse standoff18V
Current - peak pulse (10/1000μs)15.5A
Power - peak pulse500W
Power line protectionNo
Operating temperature-65°C~150°C(TJ)
PackageTape & Reel (TR)
ApplicationsGeneral Purpose
CaseDO-214AC, SMA
Bidirectional channels1

Product details

500W peak pulse power, 18V standoff — Zener TVS in DO-214AC

The 18V reverse standoff voltage means it sits across a nominal 18V rail and begins clamping when the transient exceeds the 20V minimum breakdown voltage. It is a single-channel bidirectional device, so it protects against both positive and negative transients without needing two diodes back-to-back.

Junction temperature range and mounting

It is supplied on Tape & Reel, making it compatible with automated pick-and-place assembly. The mounting type is surface mount, so no through-hole rework is needed.

The part is sourced to order through our distribution network — no stock-holding claim, no immediacy promise.

Frequently asked questions

What is the peak pulse power rating of the SMAJ18CE3/TR13?

500W peak pulse power, measured with a 10/1000µs waveform. This is the maximum surge energy the device can absorb in a single pulse before the junction temperature exceeds the rating.

Is the SMAJ18CE3/TR13 available in tape and reel packaging?

Yes, the /TR13 suffix indicates Tape & Reel packaging, suitable for automated assembly.