Skip to main content
Log in
Microchip Technology SMBJ12CE3/TR13 — Circuit Protection

SMBJ12CE3/TR13 – Microchip 600W Bidirectional TVS, DO-214AA

MPNSMBJ12CE3/TR13
Active

Microchip Technology SMBJ12CE3/TR13, Zener TVS diode, bidirectional, 600W peak pulse power (10/1000µs), 12V reverse standoff (typ), 13.3V breakdown (min), 22V clamping @ 27.3A Ipp, DO-214AA SMB package, Tape & Reel.

$0.4950Ref. price · indicative, final on quote
Microchip Technology SMBJ12CE3/TR13 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SMBJ12CE3/TR13 specifications
ParameterValue
TypeZener
MountingSurface Mount
Voltage - breakdown13.3V
Voltage - clamping (Max) @ ipp22V
Voltage - reverse standoff12V
Current - peak pulse (10/1000μs)27.3A
Power - peak pulse600W
Power line protectionNo
Operating temperature-65°C~150°C(TJ)
PackageTape & Reel (TR)
ApplicationsGeneral Purpose
CaseDO-214AA, SMB
Bidirectional channels1

Product details

12V rail clamp — 13.3V min breakdown, 22V clamp ceiling

Its 13.3V minimum breakdown voltage ensures the device starts conducting before the rail exceeds safe limits, and the 22V maximum clamping voltage at 27.3A peak pulse current (10/1000µs waveform) limits the voltage the downstream circuitry sees during a surge.

Microchip lists the SMBJ12CE3/TR13 as Active.

DO-214AA (SMB) — footprint and thermal note

The DO-214AA (SMB) package is a surface-mount JEDEC outline with a 0.050-inch (1.27 mm) pin pitch. The cathode band is marked on the body; for a bidirectional part, the orientation is symmetrical — either end can connect to the protected rail. The copper pad area under the package on the PCB directly affects the junction-to-ambient thermal resistance; a 600W peak pulse rating assumes a standard 25°C ambient and adequate board copper.

Frequently asked questions

Is SMBJ12CE3 bidirectional?

Yes, the SMBJ12CE3 is a single-channel bidirectional TVS, clamping equally in both polarities. It is suitable for AC signal lines or dual-polarity DC rails.

What is the closest pin-compatible alternative to SMBJ12CE3/TR13?

Within Microchip's SMBJ family, the unidirectional SMBJ12C is a functional alternative for single-polarity rails, but it is not pin-compatible for bidirectional use because the unidirectional version has a different polarity orientation. The SMBJ12CE3 is the bidirectional variant. For a direct drop-in, any bidirectional 12V TVS in DO-214AA from a major supplier (e.g., Littelfuse, Bourns) with matching 13.3V min breakdown and 22V clamp is a candidate — confirm the peak pulse power rating and the Ipp rating match your surge requirement.