SMAJ180CA-H

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TVS - Diodes: SMAJ180CA-H Application Field and Working Principle

TVS diodes are widely used in the field of electronic devices protection and are fast becoming the preferred components over conventional protection systems. The SMAJ180CA-H is a Transient Voltage Suppressor (TVS) diode specifically designed for the prevention of transient overvoltage damages. This diode helps in reducing risk of the damages that may be caused due to electrostatic discharge (ESD), power line surge, and inductive loads while operating in high temperature and high speed environment.

Features

The SMAJ180CA-H TVS diode is a 180V unidirectional device and has the following features:

• High Power Handling Capability -The diode can handle peak power dissipation up to 5W.
• Reverse Stand-Off Voltage -This voltage is the peak reverse voltage rating of the device and is equal to 180V.
• High Surge Capability – This device provides a fast and reliable protection in even the most extreme high surge environments.
• Low Leakage Current – The diode has a low static leakage current of 1.0 μA @25C.
• Low Clamping Voltage – This device offers a low clamping voltage of 15V.
• High Operating Temperature Range – The diode can be operated over a wide temperature range from -55 to +175 degrees Celsius.

Applications

The SMAJ180CA-H TVS diode is typically used in a wide range of applications including the protection of computers, telecom/data line protection, variable frequency drives, automotive applications, and industrial equipment. It can also be used for the protection of Automotive Control Unit (ECU) circuits, SMPS systems, and in high speed communication interfaces.

Working Principle

The SMAJ180CA-H TVS diode is a voltage-dependent device that works on the principle of avalanche breakdown. When an overvoltage condition occurs, the diode will rapidly move from its low-impedance, off-state to a high-impedance, on-state. This process occurs in a few nanoseconds. This high-current process dissipates the surge energy and protects the downstream circuitry from damaging. The diode is designed to limit the voltage on sensitive equipment and to protect them from overvoltage surges and ESD discharges.

Conclusion

The SMAJ180CA-H TVS diode provides fast and reliable protection against overvoltages and surges. It is designed to protect sensitive equipment and circuits from ESD damages and that makes it an ideal choice for high temperature and high speed applications. The diode is easy to install and is available in wide range of packages for different applications.

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