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Microchip Technology SMBJ43AE3/TR13 — Circuit Protection

SMBJ43AE3/TR13 TVS Diode – 43V Standoff, 600W, DO-214AA

MPNSMBJ43AE3/TR13
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Microchip Technology SMBJ43AE3/TR13, Zener TVS diode, 43V reverse standoff, 69.4V clamping, 600W peak pulse, single unidirectional channel, DO-214AA SMB package, Tape & Reel.

$0.2850Ref. price · indicative, final on quote
Microchip Technology SMBJ43AE3/TR13 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SMBJ43AE3/TR13 specifications
ParameterValue
TypeZener
MountingSurface Mount
Voltage - breakdown47.8V
Voltage - clamping (Max) @ ipp69.4V
Voltage - reverse standoff43V
Current - peak pulse (10/1000μs)8.6A
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

43V rail clamp for 24V and 28V buses

The SMBJ43AE3/TR13 is a unidirectional Zener TVS diode with a 43V reverse standoff voltage — it stays off below that rail, so it protects 24V and 28V DC buses without leakage current eating into the load budget. Clamping starts at 47.8V breakdown minimum and holds the surge to 69.4V max at the 8.6A peak pulse current. The 600W peak pulse rating is for the standard 10/1000µs waveform; for shorter transients the diode absorbs proportionally more energy.

600W peak pulse, DO-214AA SMB package

The DO-214AA (SMB) package is a surface-mount footprint that fits standard reflow profiles — no through-hole hand-soldering on the line.

Active production, Tape & Reel delivery

Frequently asked questions

What is the closest pin-compatible alternative to SMBJ43AE3/TR13 in this Circuit Protection family?

Within the SMBJ series, the SMBJ43A (without the suffix) is the same die in the same DO-214AA package, but the suffix on this part indicates RoHS-compliant and halogen-free construction. The electrical specs — 43V standoff, 69.4V clamping, 600W peak pulse — are identical. If your BOM requires the environmental compliance, stick with the SMBJ43AE3/TR13.