TPC20AHM3/87A

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TVS diodes are special purpose voltage and counter-electromotive force (CEMF) suppression devices used to protect electronic components and systems from damage due to transient voltage spikes in power line disturbances, inductive loading of motors, and electrostatic discharges. The TPC20AHM3/87A is one such transient voltage suppression diode for various applications. The device offers low capacitance and high peak pulse current for optimal protection from electrical transients.

Features

TPC20AHM3/87A offers a wide range of features that enable it to provide improved performance in various applications. These include:

• Low forward voltage drop: the forward voltage drop of the device is characterized by an ultra-low value of 0.3 volts, perfect for hot-swap applications.
• High peak pulse current: the diode incorporates an underwater peak current rating of 25A, making it suitable for high-voltage, nanosecond-level pulse current applications.
• Low leakage current: the device presents a low leakage current capability of 1 μA, which will help to minimize system power consumption when the device is not in use.
• High surge capability: the device exhibits excellent surge and CEMF absorbtion capabilities withstanding repetitive surge loads of up to 20A.
• Flexible packages: the diode is available in a variety of packages such as SOD-123, DO-204, DO-214, and SOT-23.

Applications

The TPC20AHM3/87A provides protection from electrical transients and ESD in various applications. It is suitable for protecting computers, office equipment, medical equipment, consumer electronics, and automotive systems. It is also suited for use in power supplies, motherboards, and graphics cards. The flexible packages allow for mounting in limited spaces, making the device ideal for high-density applications.

Working Principle

The TPC20AHM3/87A is a unidirectional device. It works by clamping the electrical transient or ESD to a specific voltage level. When the voltage across the diode exceeds its breakdown voltage, electrons start flowing through the diode, reducing the voltage across it to a safe level. The diode can absorb repetitive pulses up to its breakdown voltage until it malfunctions.

At very high input voltages, a second mechanism kicks in. This involves the diode absorbing the energy of the voltage spike, dissipating it in the form of heat. This mechanism is effective at preventing damage to the components or systems even at very high voltage levels.

Conclusion

The TPC20AHM3/87A is a high-performance transient voltage suppression diode for protecting applications from electrical transients and ESD. It offers ultra-low forward voltage drop, high peak pulse current, low leakage current, and high surge capability. It is suitable for a variety of applications including power supplies, motherboards, graphics cards, hot-swap applications, computers, office equipment, medical equipment, consumer electronics, and automotive systems. The device works by clamping and absorbing the electrical transient or ESD to a specific voltage level.

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