Skip to main content
Log in
Microchip Technology SMBJ12AE3/TR13 — Circuit Protection

SMBJ12AE3/TR13 TVS Diode – 600W, 12V, DO-214AA, Active

MPNSMBJ12AE3/TR13
Active

Microchip Technology SMBJ12AE3/TR13, Zener TVS diode, 600W peak pulse power, 12V reverse standoff, unidirectional, DO-214AA (SMB) package, Tape & Reel

$0.3900Ref. price · indicative, final on quote
Microchip Technology SMBJ12AE3/TR13 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SMBJ12AE3/TR13 specifications
ParameterValue
TypeZener
MountingSurface Mount
Voltage - breakdown13.3V
Voltage - clamping (Max) @ ipp19.9V
Voltage - reverse standoff12V
Current - peak pulse (10/1000μs)30.2A
Power - peak pulse600W
Power line protectionNo
Operating temperature-65°C~150°C(TJ)
PackageTape & Reel (TR)
ApplicationsGeneral Purpose
CaseDO-214AA, SMB
Unidirectional channels1

Product details

600W peak pulse, 12V rail clamp in DO-214AA

It clamps transients up to 19.9V at the peak pulse current of 30.2A, making it suitable for protecting 12V power rails in industrial, telecom, and general-purpose circuits.

Breakdown and clamping window

The 12V reverse standoff (working voltage) sits below the 13.3V min breakdown, so the diode stays off during normal operation and only conducts when a transient pushes the rail above 13.3V. Maximum clamping at 19.9V limits the voltage spike seen by the downstream load — a 7.9V window from breakdown to clamp that keeps most 12V-rated ICs within their absolute maximum ratings.

Active production, surface-mount reel

Supplied on Tape & Reel (TR) in the DO-214AA (SMB) package, a standard surface-mount footprint that reflows with the same profile as common SMB diodes.

Frequently asked questions

Is SMBJ12AE3/TR13 unidirectional or bidirectional?

It is a unidirectional Zener TVS with one channel, meaning it clamps transients in one polarity relative to ground. For bidirectional protection on AC or bipolar rails, use the SMBJ12CA series.

What is a direct cross reference for SMBJ12AE3/TR13?

The SMBJ12A family from other manufacturers (e.g., Littelfuse, Vishay) is functionally equivalent — same 600W rating, 12V standoff, DO-214AA package. Confirm the breakdown voltage tolerance and the AEC-Q grade if your BOM requires automotive qualification; the Microchip suffix indicates a standard commercial grade.