B72214S0950K101

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B72214S0950K101 is a general-purpose Varistor (Voltage-Dependent Resistor), manufactured by EPCOS AG, which is a part of the TDK Group, and is capable of protecting electronic equipment from surge voltage (transients) on the AC side. It is usually used to replace or upgrade existing varistors in circuit protection applications including power distribution, circuit protection, and telecoms equipment.

A varistor is a voltage-dependent resistor, meaning that its electrical characteristics depend on the applied voltage, and not on the current through it. As an AC voltage is applied to it, the resistance of the varistor decreases until it reaches a maximum dissipation rating, at which point it will become a low impedance path and allow current to flow. This current could be damaging to the rest of the system, so the varistor is designed to make sure the transient voltages are clamped to a safe level and the current is limited.

B72214S0950K101 is a Type 2, 1500VAC, 40µF, surface mount varistor designed for general-purpose circuit protection applications. It is pulse rated for 4500A and comes in an industry standard package. The varistor can handle a maximum operating voltage of 500VAC, and has a clamping voltage of 720V at 10A. It offers a wide range of operating temperatures, from -40 to +85°C, and is UL 94 V-0 flammability rating. The varistor also has a static capacitance of approximately 0.15µF, making it suitable for protection of sensitive electronic circuits.

The working principle of the B72214S0950K101 is simple. When a surge voltage is applied to the varistor, the resistance across the device decreases due to the transfer of charge between the two electrodes. This transfer of charge causes a voltage drop, which is then dissipated across the varistor. The amount of the voltage drop and the amount of current that can be dissipated depends on the capacitance of the device, which is affected by the operating temperature.

The B72214S0950K101 can protect a wide variety of electronic applications, such as consumer electronics, industrial equipment, telecommunications, and more. It is suitable for industrial control systems, where transient spikes caused by power surges could prove to be dangerous. It is also suitable for lighting systems, where it can provide protection against transient voltage spikes caused by lightning strikes. Additionally, the B72214S0950K101 can provide protection for medical equipment, where transient voltage spikes could damage sensitive electronics.

In summary, B72214S0950K101 is a general-purpose Varistor (Voltage-Dependent Resistor) that is capable of providing protection against voltage spikes. Its wide temperature range allows it to be used in a variety of applications, and it is UL 94 V-0 rated for safety. Its static capacitance of 0.15µF makes it suitable for protection of sensitive electronics, and its pulse rating of 4500A ensures it is capable of handling large surge voltages. It is a reliable, cost-effective solution for circuit protection.

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