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Microchip Technology SMAJ45AE3/TR13 — Circuit Protection

SMAJ45AE3/TR13 Zener TVS Diode – Microchip, 500W, DO-214AC

MPNSMAJ45AE3/TR13
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Microchip Technology SMAJ45AE3/TR13, Zener TVS Diode, 500W Peak Pulse Power, 45V Reverse Standoff, 72.7V Clamp, DO-214AC (SMA) Package, Tape & Reel

$0.1800Ref. price · indicative, final on quote
Microchip Technology SMAJ45AE3/TR13 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SMAJ45AE3/TR13 specifications
ParameterValue
TypeZener
MountingSurface Mount
Voltage - breakdown50V
Voltage - clamping (Max) @ ipp72.7V
Voltage - reverse standoff45V
Current - peak pulse (10/1000μs)6.9A
Power - peak pulse500W
Power line protectionNo
Operating temperature-65°C~150°C(TJ)
PackageTape & Reel (TR)
ApplicationsGeneral Purpose
CaseDO-214AC, SMA
Unidirectional channels1

Product details

Zener TVS for 45V rail protection

The 72.7V maximum clamping voltage at 6.9A peak pulse current sets the upper limit the downstream circuitry sees during a surge — a key number for selecting downstream components with adequate voltage margin.

Package and mounting in the field

Housed in a DO-214AC (SMA) surface-mount package, it reflows on standard lead-free profiles. The body is small enough for tight layouts but large enough to hand-solder with a fine iron if you are doing a field swap — just watch the polarity marking.

Microchip Technology is the sole manufacturer; no official second-source cross-reference is published. For BOM planning, the part is sourced per RFQ against your quantity.

Frequently asked questions

Is SMAJ45AE3/TR13 RoHS compliant?

The evidence does not list RoHS status explicitly. The part carries the '' suffix, which typically indicates RoHS-compliant and lead-free termination finish per Microchip's naming convention, but confirm with the datasheet or your compliance team.

What is the difference between SMAJ45AE3/TR13 and SMAJ45A?

The '' suffix in SMAJ45AE3/TR13 indicates lead-free / RoHS-compliant termination finish, while SMAJ45A typically uses tin-lead plating. The 'TR13' suffix denotes Tape & Reel packaging. Electrical specs (45V standoff, 500W peak pulse) are identical.