BPMA48D60LV

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Varistors, MOVs, and other transient voltage suppression (TVS) diodes are special components used for protecting sensitive equipment from electrical transients in electrical power systems. The BPMA48D60LV is one such TVS device, designed and manufactured by Vishay Intertechnology, Inc., for suppression of overvoltages in limited power electronic applications. This article will discuss the application fields of the BPMA48D60LV as well as its working principle.

Application Fields of the BPMA48D60LV

The BPMA48D60LV is a low-capacitance, low-temperature rise, ESD protected, bidirectional TVS diode designed to suppress esd, ef and surge transients by providing a connection from the supply to ground when a voltage in excess of the breakdown voltage is applied. The device is rated for voltage suppression of up to 500V and power dissipation of up to 60W.

The BPMA48D60LV can be used in a wide range of applications including overvoltage/ surge protection for small-signal components, cellular phones, audio/video equipment, disk drives, modems, and computers. It can also be employed in customer premise equipment such as customer premise equipment, digital subscriber line terminals, industrial control systems, and power line communication systems.

Working Principle of the BPMA48D60LV

The BPMA48D60LV utilizes a Zener diode structure to protect against the destructive effects of transient voltages caused by lightning or other sources of power transient events. The device works by clamping the voltage at a predetermined level according to the breakdown voltage of the diode. When a voltage sufficient to cause a surge or other overvoltage condition is applied to the diode, it begins to conduct and the voltage is clamped at breakdown voltage.

The BPMA48D60LV utilizes a metal-oxide varistor as its voltage-clamping element. In normal operation, the metal-oxide film acts as an insulator, with a high dielectric strength. When subjected to a transient overvoltage, the film generates a current that is proportional to the overvoltage- rise time and magnitude. This current rapidly discharges the overvoltage, and the device returns to its normal state as soon as the transient event has passed.

Conclusion

In conclusion, the BPMA48D60LV is an effective overvoltage/ surge protection device that can be used in a variety of applications. Its metal-oxide varistor works by clamping the voltage at a predetermined level according to the breakdown voltage of the diode and rapidly discharging the overvoltage. This ensures that sensitive equipment from electrical transients in electrical power systems is effectively protected.

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