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SMBJ13A

Name: SMBJ13A
Rating: 4.7 (12 reviews)

TVS DIODE 13VWM 21.5VC DO214AA,S

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資料表 SMBJ13A DataSheet
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規格

Series	SMBJ
Part Status	Active
Type	Zener
Voltage - Reverse Standoff (Typ)	13V
Voltage - Breakdown (Min)	14.4V
Voltage - Clamping (Max) @ Ipp	21.5V
Current - Peak Pulse (10/1000µs)	28A
Power - Peak Pulse	600W
Power Line Protection	Yes
Applications	General Purpose
Operating Temperature	-55°C ~ 150°C
Mounting Type	Surface Mount
Package	DO-214AA, SMB
Supplier Device Package	DO-214AA (SMBJ)
Packaging	Tape & Reel (TR)
Unidirectional Channels	1

概述

Description

SMBJ13A is a unidirectional transient voltage suppressor (TVS) diode in the SMB (DO-214AB) package. It protects low-voltage DC rails (roughly 12–14 V) and data lines from surges and ESD. The “13” denotes a reverse standoff voltage near 13 V, and the “A” indicates unidirectional operation (cathode to the positive side). It provides high peak pulse power resistance, typically about 1500 W (10/1000 µs). Clamping occurs above the standoff voltage, with a typical clamp in the low‑to‑mid 20 V range at surge currents. Typical breakdown voltage (VBR) is around the mid‑teens (depending on manufacturing tolerances).
Common applications include automotive 12 V systems, USB, CAN, Ethernet PHY lines, and other protected 12 V rails. Use it close to the protected node with correct polarity for the unidirectional version. Soldering follows standard SMB practices; verify junction temperature and PCB layout for peak surge events.

Features

Here are common features of the SMBJ13A TVS diode:
- Unidirectional TVS diode (suffix A)
- Package: SMB (DO-214AA)
- Peak pulse power: 600 W (tp = 10/1000 µs)
- Stand-off voltage: VR ≈ 13 V
- Breakdown voltage: VBR typically ~15–16 V
- Clamping voltage: ≈ 21 V (at IPP)
- Fast response time (instantaneous surge protection)
- Low leakage in normal operation
- Broad operating temperature: -55°C to +125°C
- RoHS compliant
- Applications: protects 12 V rails in automotive and general DC power/supply lines

Package

DO-214AA (SMBJ) surface-mount package.

Pinout

- Pin count: 2 terminals (anode and cathode).
- Function: unidirectional transient voltage suppressor (TVS) diode in the SMB (DO-214AB) package, used to clamp transient voltages and protect circuits on the line (VRWM ≈ 13 V).

Manufacturer

Littelfuse, Inc. The SMBJ13A is manufactured by Littelfuse, an American multinational company that specializes in circuit protection, including fuses, TVS diodes, varistors, and other overcurrent/overvoltage protection devices for electronics.

Application

SMBJ13A is a unidirectional transient voltage suppressor (TVS) diode with a 13 V standoff, used to protect 12 V rails from surges. Typical applications:
- Automotive 12/24 V electrical systems (load dumps, transients)
- Telecom and industrial equipment power inputs
- DC-DC converters, power supplies, battery management, solar charge controllers
- Consumer electronics with 12 V rails
- Protection of data/IO lines in 12 V systems

Equivalent

Equivalents are 13 V bidirectional TVS diodes in SMB package from major vendors:
- Littelfuse SMBJ13A
- Vishay SMBJ13A
- ON Semiconductor SMBJ13A
- ProTek Devices SMBJ13A
Cross-reference options (different packages) include SMAJ13A (SMA) and 1SMBJ13A (alternate SMB variant). Always verify exact specs (standoff voltage, bidirectional vs unidirectional, power rating) and footprint.