AMCV-1812H-090-T

TVS - Varistors, MOVs

The AMCV-1812H-090-T is a type of transient voltage suppression (TVS) device designed to protect electronic applications against voltage transients. It belongs to a category of devices known as varistors (also known as voltage-dependent resistors or VDRs) and has a specific voltage threshold rating range of 15 V to 450 V. It is classified as a MOV (metal oxide varistor or voltage-dependent resistor), which makes it suitable to protect against moderate surges from overloads or short-circuits.

Application Field

The AMCV-1812H-090-T is generally used for high-voltage transient protection in consumer electronic devices, such as smartphones, tablets, laptops, and gaming consoles. This device is designed for electrical noise suppression on a wide variety of power and data circuits including power supply lines, signal lines, and internal data communication lines. Its high-speed response and low capacitance make it suitable for high-frequency lines such as Ethernet, Hi-Speed USB, and low voltage differential signal (LVDS).

Working Principle

The AMCV-1812H-090-T provides transient voltage suppression (TVS) by engaging its metal-oxide layer between two electrodes when the voltage threshold is exceeded. The two electrodes are made up of two alternating layers of zinc oxide and sputtered silver or other conductor material. The metal oxide layer in between is an n-type semiconductor material, making it highly resistive.

When an overvoltage is applied to the device, the voltage causes the n-type material to become conductive, effectively reducing the difference in voltage and suppression the transient voltage. When the voltage returns to its normal level, the n-type material reverts to its highly resistive state, and the device is reset. This is how the AMCV-1812H-090-T provides transient voltage surge protection.

Conclusion

The AMCV-1812H-090-T is a transient voltage suppression device designed to protect electronic applications from overvoltages. It is classified as a MOV device, which makes it suitable to protect against light to medium voltage transients. Its wide voltage threshold range makes it suitable for applications such as consumer electronics and data communication lines. Thanks to its highly resistive n-type material layer, the device can quickly suppress transient voltages and reset once the voltage returns to its normal level.