B72660M0600K072 Circuit Protection

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The B72660M0600K072 is a thyristor based varistor, also referred to as a voltage dependent resistor (VDR). The device, manufactured by Siemens, is a 700 volt transient voltage suppressor with a capacitance of 6.0pF. It is a rugged, economical, and low-power solution, designed to protect vulnerable electronic components from transients caused by over voltage. Additionally, the B72660M0600K072 provides protection against overcurrent that can damage critical circuits.

TVS - Varistors are voltage dependent resistors that provide protection against transient voltage changes, such as electrical surges and power spikes. They are designed to limit the voltage to an acceptable level, protecting sensitive circuitry from being damaged. Varistors are usually made up of semiconductor material, with their most common physical appearance resembling a disc-shaped switch. Varistors are used in a variety of applications including medical, automotive, consumer electronics, telecommunications and military to protect sensitive equipment from electrical surges or spikes.

When dealing with transient overvoltage, these devices need to rapidly absorb and dissipate any excessive energy that occurs. It is crucial for the TVS to have low clamping voltage, or else the device will not effectively clamp the surge voltage. The B72660M0600K072 varistor has a maximum clamping voltage of 170 volts. Additionally, the maximum peak current of 4,000 A (10/1000 μs) waveforms and the maximum energy rating of 15 J (10/1000 μs) waveforms make it an ideal TVS solution for many applications.

The B72660M0600K072 works on the principle of using a reverse biased semiconductor junction to protect circuits from transient voltages. When the voltage across the junction exceeds the breakdown voltage, the device will effectively clamp the voltage to the breakdown level. As it reaches its clamping voltage, it also begins to dissipate energy to a point where the voltage drop is within an acceptable range. The device is capable of absorbing surges of up to 700 volts while dissipating any or all remaining energy.

The B72660M0600K072 varistor is applicable in a range of industries and applications. It can greatly reduce the risk of disruption to businesses and minimise the cost of repairs in cases where power outages occur. It is commonly used in digital and linear circuit protection, such as motor and generator control, relays, micro-controller boards and UPS systems. Additionally, the device offers high repeatability and low capacitance, making it suitable for use in audio and video applications.

In summary, the B72660M0600K072 varistor is a thyristor based voltage dependent resistor designed to limit transient voltages in sensitive electronic components and equipment. The device operates on the principle of reverse biased semiconductor junctions, which when the voltage exceeds the breakdown voltage, will effectively clamp the voltage at the breakdown level. It is suitable for use in a range of applications and industries such as medical, automotive, consumer electronics, telecommunications and military.

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