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Microchip Technology SMBJ20E3/TR13 — Circuit Protection

SMBJ20E3/TR13 Zener TVS Diode – 20V, 600W, DO-214AA

MPNSMBJ20E3/TR13
Active

Microchip Technology SMBJ20E3/TR13, Zener TVS diode, 20V reverse standoff, 600W peak pulse power, unidirectional, DO-214AA (SMB) surface mount package, tape and reel.

$0.2850Ref. price · indicative, final on quote
Microchip Technology SMBJ20E3/TR13 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SMBJ20E3/TR13 specifications
ParameterValue
TypeZener
MountingSurface Mount
Voltage - breakdown22.2V
Voltage - clamping (Max) @ ipp35.8V
Voltage - reverse standoff20V
Current - peak pulse (10/1000μs)16.7A
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

20V rail clamping with 600W surge capacity

The SMBJ20E3/TR13 is a unidirectional Zener TVS diode designed to clamp transients on a 20V nominal rail. Its 22.2V minimum breakdown voltage and 35.8V maximum clamping voltage define the protection window: the rail sees no more than 35.8V during a surge event. The 600W peak pulse power rating at 10/1000µs waveform tells you how much surge energy it can absorb — enough for typical industrial or automotive transient protection on a 20V bus.

Peak pulse current and temperature range

Rated for 16.7A peak pulse current under the 10/1000µs waveform, the diode can handle brief high-current spikes without failing.

Active production in DO-214AA package

Frequently asked questions

Is SMBJ20E3/TR13 a direct replacement for SMBJ20CA?

No. SMBJ20CA is a bidirectional TVS; SMBJ20E3/TR13 is unidirectional. They are not pin-compatible for the same protection function. Check your circuit's polarity requirement before substituting.

What is the peak pulse current of SMBJ20E3/TR13?

16.7A under the 10/1000µs waveform.