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Microchip Technology SMAJ40CE3/TR13 — Circuit Protection

SMAJ40CE3/TR13 TVS Diode – 40V, 500W, DO-214AC, Active

MPNSMAJ40CE3/TR13
Active

Microchip Technology SMAJ40CE3/TR13, Zener-type TVS diode, 40V reverse standoff, 500W peak pulse power, DO-214AC (SMA) surface-mount package, tape & reel.

$0.1800Ref. price · indicative, final on quote
Microchip Technology SMAJ40CE3/TR13 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SMAJ40CE3/TR13 specifications
ParameterValue
TypeZener
MountingSurface Mount
Voltage - breakdown44.4V
Voltage - clamping (Max) @ ipp71.4V
Voltage - reverse standoff40V
Current - peak pulse (10/1000μs)7A
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

40V standoff, 500W pulse — Zener TVS in DO-214AC

The 44.4V minimum breakdown voltage ensures the device does not conduct during normal operation on a 40V bus, while the 71.4V clamping voltage limits the spike seen by downstream components.

Active production — tape & reel for volume assembly

Rated for -65°C to 150°C junction temperature, this diode can be deployed in underhood automotive, outdoor telecom cabinets, and industrial control panels where ambient temperatures exceed 85°C. The single bidirectional channel protects against both positive and negative transients on a single line, reducing component count on bidirectional buses.

Frequently asked questions

What is the closest pin-compatible alternative to SMAJ40CE3/TR13?

Within the same SMAJ family, the SMAJ40A (unidirectional) and SMAJ40CA (bidirectional) are direct alternatives sharing the same DO-214AC footprint and 40V standoff. The SMAJ40CE3/TR13 is the bidirectional version with the - suffix indicating RoHS compliance and lead-free plating.