5KASMC18AHM3_A/H Circuit Protection

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Transient Voltage Suppressors (TVS), known as surge suppressors, are used for providing protection from transient surges in electrical systems. In this article, we will focus on the specifics of the 5KASMC18AHM3_A/H TVS Diode, its application field and working principle.

Features of 5KASMC18AHM3_A/H TVS Diode

The 5KASMC18AHM3_A/H TVS Diode is designed to protect sensitive electronic circuits in a variety of applications. This device is capable of handling high power with very low leakage current. It has an ultra low capacitance differential pairs of typically 220pF, and an ultra low on-resistance of 0.5Ω. The 5KASMC18AHM3_A/H also offers excellent transient protection from +2.5kV to +18V. The pulse power capability is up to 11A. Additional features include thermal protection, over-voltage protection, high speed switching, and enhanced surge current capacity.

Applications of 5KASMC18AHM3_A/H TVS Diode

The 5KASMC18AHM3_A/H TVS Diode is highly suited for a variety of applications, especially fax machine, modem, and portable device applications. This diode is also great for providing over-voltage protection for computers, high-speed communication lines, and automotive applications. In addition, this device is used in radio transmitters, power supplies, hard disk drives, and coaxial cables.

Working Principle of 5KASMC18AHM3_A/H TVS Diode

The 5KASMC18AHM3_A/H TVS Diode utilizes the Zener-breakdown effect to protect electric circuits. This diode has two distinct regions - the forward region and the back region. In the forward region, the diode exhibits a shift in the avalanche break-down voltage, while in the back region it exhibits a shift in the Zener break-down voltage. The Zener break-down voltage is determined by the amount of doping in the back region. The Zener region then acts as a barrier, allowing current to flow only on the higher potential side. In this way, the 5KASMC18AHM3_A/H acts as a voltage clamp and absorbs transients when they occur. The absorbed power is then dissipated, effectively protecting the circuit from damage.

Conclusion

The 5KASMC18AHM3_A/H TVS Diode is a versatile surge protection device that can be used in a variety of applications. Its features of low capacitance, low on-resistance, and excellent transient protection capabilities make it a popular choice in protecting sensitive circuits. The Zener-breakdown effect allows this device to act as a voltage clamp, effectively dissipating energy when a transient surge occurs. This ensures the circuit remains undamaged and functioning correctly.

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