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Microchip Technology SMAJ8.5CE3/TR13 — Circuit Protection

SMAJ8.5CE3/TR13 Zener TVS, 500W, DO-214AC – Microchip

MPNSMAJ8.5CE3/TR13
Active

Microchip Technology SMAJ8.5CE3/TR13, Zener TVS diode, 500W peak pulse power, 8.5V reverse standoff, 15.9V clamping at 31.4A, DO-214AC (SMA) surface mount, Tape & Reel.

$0.1800Ref. price · indicative, final on quote
Microchip Technology SMAJ8.5CE3/TR13 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SMAJ8.5CE3/TR13 specifications
ParameterValue
TypeZener
MountingSurface Mount
Voltage - breakdown9.44V
Voltage - clamping (Max) @ ipp15.9V
Voltage - reverse standoff8.5V
Current - peak pulse (10/1000μs)31.4A
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

Active Zener TVS in DO-214AC – what it protects

The SMAJ8.5CE3/TR13: Its 8.5V reverse standoff voltage and 15.9V clamping at 31.4A make it a fit for 5V or 3.3V rail protection where the transient energy is moderate.

Clamping voltage and peak pulse current – the numbers that matter

At the 10/1000µs test waveform, the clamping voltage is 15.9V maximum at 31.4A peak pulse current (Ipp). This clamping level is the voltage the protected circuitry sees during a surge; a 15.9V clamp is safe for 12V rails but too high for 3.3V logic without additional series resistance.

Temperature range and application environments

The device is rated for General Purpose applications – no power-line protection or AEC-Q automotive qualification is listed, so it is not formally qualified for automotive use despite the wide temp range.

Frequently asked questions

Is SMAJ8.5CE3/TR13 a suitable replacement for SMAJ8.5A?

The SMAJ8.5A is a unidirectional device; the SMAJ8.5CE3/TR13 is bidirectional. They share the same DO-214AC package and similar breakdown voltage, but the polarity difference means they are not drop-in replacements unless the circuit is symmetric.