B72500E2170S160 Circuit Protection

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Varistors, MOVs, and TVS diodes are the three main categories when it comes to surge protection and suppression. They all offer different levels of protection against voltage spikes, and they all have different performance specifications and operating ranges. The B72500E2170S160 varistor is a product of General Semiconductor, and it fits into the varistors category. This article will discuss the application field and working principle of the B72500E2170S160.

The B72500E2170S160 is an unidirectional varistor that is designed to protect equipment against transient voltage spikes. The device features a wide operating range, from 7.5 to 1700 volts, and it can withstand continuous operating voltages of up to 2500 volts. The varistor achieves a noise current rating of 200A (8/20us) and a surge current rating of 3600A (8/20us), and it has a response time of 6 microseconds or less. The device has a maximum capacitance of 4.2pF, a minimum leakage current of 0.2µA, and a maximum dissipation power of 8.2mW.

The device is ideal for applications such as telecom, instrumentation, process control and industrial automation. It can be used to protect sensitive equipment from damage due to transient voltage spikes. In addition, it can also be used to absorb energy from ground loops that could cause problems. The device is available in both radial and axial configurations, which gives it a wide range of installation options.

In terms of working principle, the B72500E2170S160 works by clamping the input voltage to a predetermined value. The varistor consists of two main parts - the ceramic body and the silicon electrodes. The ceramic body is made of zinc oxide, which has a zinc oxide grain structure that increases its surge current withstand capabilities. The electrode consists of a doped polysilicon layer, which is sandwiched between the ceramic body and the metal pads. This polysilicon layer provides a low-resistance path for current to flow.

When the varistor is exposed to a transient voltage, the current flows through the polysilicon layer, which causes the zinc oxide to be negatively charged. This negative charge creates a voltage across the metal pads, which then clamps the input voltage to the predetermined value. The higher the voltage, the greater the clamping effect, which is what makes varistors so effective in limiting the magnitude of transient voltage spikes.

In summary, the B72500E2170S160 varistor is an ideal solution for protecting sensitive equipment from transient voltage spikes. It has a wide operating range, a high surge withstand capabilities, and a low response time. It is suitable for telecom, instrumentation, process control, and industrial automation applications. It works by clamping the input voltage to a predetermined value when exposed to a transient voltage.

The specific data is subject to PDF, and the above content is for reference