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Microchip Technology SMAJ48CE3/TR13 — Circuit Protection

SMAJ48CE3/TR13 TVS Diode – 48V Bidirectional Zener, 500W

MPNSMAJ48CE3/TR13
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Microchip Technology SMAJ48CE3/TR13, Zener-type bidirectional TVS diode, 48V reverse standoff, 500W peak pulse power, DO-214AC (SMA) package, -65°C to 150°C junction temperature.

Microchip Technology SMAJ48CE3/TR13 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SMAJ48CE3/TR13 specifications
ParameterValue
TypeZener
MountingSurface Mount
Voltage - breakdown53.3V
Voltage - clamping (Max) @ ipp85.5V
Voltage - reverse standoff48V
Current - peak pulse (10/1000μs)5.8A
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

48V bidirectional Zener TVS in DO-214AC

Its single bidirectional channel clamps symmetrically, making it suitable for AC or bipolar DC lines where polarity is not fixed. The 48V reverse standoff voltage sets the maximum continuous DC operating level before the diode begins to conduct — a 48V rail with 10% tolerance stays below the 53.3V minimum breakdown voltage.

Junction temperature envelope and package

Operating junction temperature spans -65°C to 150°C — wide enough for outdoor telecom cabinets, industrial motor drives, and underhood automotive electronics.

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Frequently asked questions

Is SMAJ48CE3/TR13 a bidirectional or unidirectional TVS diode?

It is a bidirectional Zener TVS diode — it clamps both positive and negative transients symmetrically, so polarity on the protected line does not matter.

What is the peak pulse power rating of SMAJ48CE3/TR13?

500W peak pulse power per the 10/1000µs waveform. This sets the energy-handling capability for a single transient event.

What package is SMAJ48CE3/TR13 in?

Surface-mount DO-214AC (SMA) package, supplied on Tape & Reel.