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SMAJ58A-13-F

600W unidirectional TVS, 58V standoff, 93.1V clamp, SMA package

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Manufacturer Part：

SMAJ58A-13-F

Package：

SMA (DO-214AC) (5.2 x 2.6 x 2.2 mm)

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Description

Product Overview

The SMAJ58A-13-F from Diodes Incorporated (Littelfuse compatible) is a 600W unidirectional TVS diode in an SMA (DO-214AC) package. With 58V standoff voltage and 93.1V clamping voltage, it provides transient overvoltage protection for 48V power rails and telecom circuits.

Key Specifications

Type Unidirectional TVS Diode
Peak Pulse Power 600W (10/1000us)
Standoff Voltage (VRWM) 58V
Breakdown Voltage (VBR) 64.4V ~ 71.4V
Clamping Voltage (VC) 93.1V @ IPP=6.44A
Leakage Current 1uA @ VRWM
Package SMA (DO-214AC)
Operating Temperature -55°C to +150°C (TJ)

Features

  • 600W peak pulse power dissipation
  • 58V reverse standoff voltage
  • 93.1V maximum clamping voltage
  • Low 1uA leakage at standoff voltage
  • Unidirectional protection for DC rails
  • SMA surface-mount package

Applications

  • 48V telecom power rail protection
  • Industrial 48V bus transient suppression
  • PoE and PoE+ input protection
  • Power over data line surge protection
  • Automotive 48V system ESD/surge

The SMAJ58A-13-F from Diodes Incorporated is a 600W unidirectional transient voltage suppression (TVS) diode in an SMA (DO-214AC) package. With 58V reverse standoff voltage and 93.1V maximum clamping voltage at 6.44A peak pulse current, it protects 48V power rails from ESD, EFT, and surge transients. The device complies with IEC 61000-4-2 (ESD), IEC 61000-4-4 (EFT), and IEC 61000-4-5 (surge) standards. Low 1uA leakage current at standoff voltage minimizes standby power draw. The SMA package provides reliable surface-mount protection in a compact footprint.

The SMAJ58A-13-F operates as an avalanche diode that remains in a high-impedance off-state when the voltage across it is below the breakdown voltage (64.4-71.4V). When a transient voltage exceeds the breakdown voltage, the device avalanches and conducts heavily, clamping the voltage to a safe level (93.1V max at rated current). The energy from the transient is dissipated as heat in the semiconductor junction. Once the transient subsides, the device returns to its high-impedance state. The unidirectional configuration blocks DC in the forward direction (like a normal diode), protecting DC power rails where voltage polarity is fixed.

Pin Name Type Function
1 Cathode Power Cathode (connect to positive rail)
2 Anode Power Anode (connect to ground)
  • 48V telecom and PoE power rail transient protection
  • Industrial 48V DC bus surge suppression
  • Power over Ethernet input ESD/surge protection
  • Automotive 48V mild hybrid system protection
  • Solar panel 48V system overvoltage clamp
Manufacturer Part Number Package Notes
Littelfuse SMAJ58A SMA Original specification, equivalent
ST SMAJ58A-TR SMA Pin-compatible TVS diode
onsemi SMAJ58A SMA Equivalent TVS, 600W
Bourns SMAJ58A-M3/9AT SMA 600W unidirectional TVS
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Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

Shipping & Payment

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

Service & Packaging

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

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