SMBJ12A

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SMBJ12A

+BOM

TVS DIODE 14VWM 19.9VC DO214AA

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Specifications

Attribute Value
Package Tape & Reel (TR)
Series SMBJ
ProductStatus Active
Type Zener
UnidirectionalChannels 1
Voltage-ReverseStandoff(Typ) 14V
Voltage-Clamping(Max)@Ipp 19.9V
Power-PeakPulse 600W
Applications General Purpose
OperatingTemperature -55°C ~ 150°C (TJ)
MountingType Surface Mount
Package/Case DO-214AA, SMB

Overview

Description

The SMBJ12A is a semiconductor device known as a Transient Voltage Suppressor (TVS) diode, specifically designed to protect electronic circuits from voltage spikes and transient events. It is part of the SMBJ series, which are known for their robust performance in safeguarding sensitive components. The "12A" in its name indicates a breakdown voltage of approximately 12 volts.
The SMBJ12A is packaged in a surface-mount SMB (DO-214AA) case, making it suitable for compact circuit board designs. It is unidirectional, meaning it is designed to protect against voltage spikes of a single polarity, typically negative-to-positive. The device is capable of handling peak pulse power of 600 watts, offering substantial protection during electrical surges such as those resulting from electrostatic discharge (ESD), electrical fast transients (EFT), and lightning surges.
This TVS diode is commonly used in various applications, including telecom equipment, consumer electronics, and industrial systems, where maintaining voltage stability is crucial. Its easy installation and reliability make the SMBJ12A a popular choice for engineers seeking to enhance the durability and safety of electronic systems.

Equivalent

The SMBJ12A is a TVS (Transient Voltage Suppressor) diode. Equivalent products include the 1SMA12AT3G from ON Semiconductor, P6SMB12A from Littelfuse, and SMCJ12A from Bourns. These components offer similar voltage clamping capabilities and package size, specifically for applications requiring transient overvoltage protection. Always verify the specific electrical characteristics and package compatibility when selecting an equivalent.

Features

The SMBJ12A is a surface-mount Transient Voltage Suppressor (TVS) diode designed to protect sensitive electronic equipment from voltage transients induced by lightning and other transient voltage events. Here are its key features:
1. Voltage Rating: It has a nominal breakdown voltage of 12 volts.
2. Power Dissipation: The device can handle a peak pulse power dissipation of 600 watts when measured at 10/1000µs waveform.
3. Response Time: The SMBJ12A offers fast response times, typically less than a picosecond, ensuring rapid protection against voltage spikes.
4. Package: It comes in a DO-214AA (SMB) package, which is compact and suitable for surface mounting on printed circuit boards.
5. Polarity: It is an unidirectional device, designed to protect against positive voltage transients.
6. Operating Temperature: It operates effectively within a temperature range of -55°C to +150°C.
7. Low Leakage: The device features low leakage currents under normal operating conditions, minimizing power consumption.
8. Compliance: It meets the industry's standard for RoHS compliance, ensuring it is free from hazardous substances.
These features make the SMBJ12A ideal for safeguarding various electronic devices in automotive, telecommunications, and consumer electronics applications.

Pinout

The SMBJ12A is a unidirectional Transient Voltage Suppressor (TVS) diode designed to protect sensitive electronics from voltage transients induced by inductive load switching and lightning. It is part of the SMBJ series, which is packaged in the DO-214AA (SMB) package.
- Pin Count: The SMBJ12A has 2 pins.

- Function:
- Protection: It is used to protect circuits from overvoltage conditions by clamping high voltage spikes to safer levels.
- Voltage Rating: The device is designed to handle a breakdown voltage of 12V, with a working standoff voltage of around 12.8V.
- Power Handling: It can handle a peak pulse power dissipation of 600 watts for a 10/1000 µs waveform.
The SMBJ12A provides a reliable and robust protection solution for various electronic applications, ensuring the longevity and durability of the protected components.

Manufacturer

The SMBJ12A is a TVS (Transient Voltage Suppressor) diode, and it is manufactured by several companies, including Littelfuse, Vishay, and Bourns, among others. These companies are well-known manufacturers of electronic components.
Littelfuse is an American company that specializes in circuit protection, power control, and sensing solutions. It provides a wide range of products used in automotive, industrial, telecommunications, and consumer electronics applications.
Vishay Intertechnology is another major manufacturer, based in the United States, known for producing a comprehensive portfolio of discrete semiconductors (diodes, MOSFETs, and infrared optoelectronics) and passive electronic components such as resistors, inductors, and capacitors.
Bourns is also a global electronics company that provides a variety of components, including circuit protection, magnetic products, and sensors. It serves different sectors such as automotive, industrial, and consumer electronics.
These companies play a crucial role in supplying components that ensure the safety and efficiency of electronic systems by protecting them against voltage spikes and other electrical irregularities.

Application

The SMBJ12A is a surface-mount transient voltage suppressor (TVS) diode. Its primary application areas include:
1. Overvoltage Protection: It safeguards sensitive electronic components from voltage spikes and transients typically caused by electrostatic discharge (ESD), electrical fast transients (EFT), and lightning surges.
2. Consumer Electronics: Used in devices like smartphones, laptops, and tablets to protect internal circuits.
3. Industrial Equipment: Provides protection in harsh environments prone to voltage surges.
4. Telecommunications: Secures communication equipment from transient voltages on data lines.
5. Automotive Systems: Protects vehicular electronics against load dump and other transient events.
Overall, SMBJ12A is suitable for any application requiring robust transient voltage suppression.

Package

The SMBJ12A is a surface-mount Transient Voltage Suppressor (TVS) diode. It is typically housed in an SMB (DO-214AA) package, designed to protect electronic circuits from voltage spikes. The compact design is suitable for automated placement and is widely used in various electronic applications for overvoltage protection.

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