B72210S2251K551

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TVS (Transient Voltage Suppression) devices provide surge protection for sensitive electronics and come in a few types. Varistors, also known as Voltage Dependent Resisters (VDRs), and Metal Oxide Varistors (MOVs) are two of the more popular types. B72210S2251K551, primarily used for protecting data lines in digital circuits, is an MOV designed for relatively low-voltage protection (<125V). It can also be used for protecting signal and power lines below their rated voltage.

The basic principle of MOVs is that they have a voltage-dependent resistance that changes with the applied voltage level. The MOV’s resistance is very low at low voltages, allowing current to flow freely through the device. However, when a higher voltage is applied, the device’s resistance increases sharply and it effectively blocks current from flowing. As a result, it acts as a voltage-limiting device, limiting overvoltages.

The B72210S2251K551 MOV is designed to operate with high-surge energy capability (>175J) and is equipped with a clamping voltage of <125V. It has a peak current rating up to 35A and can handle up to 3A continuous current. This makes it suitable for protecting a wide range of low-voltage circuits, especially digital circuits, from excessive voltage surges.

The B72210S2251K551 also features a low leakage current and fast response time of <1ns, which enables it to effectively suppress fast transient overvoltages. This is especially important in digital circuits, as it can provide a reliable protection even when exposed to simultaneous high surge and fast transients.

The B72210S2251K551’s small size also makes it suitable for use in portable, handheld, and embedded applications, where space is limited. It is available in various package sizes and is RoHS compliant, making it an environmentally friendly solution.

In conclusion, the B72210S2251K551 is an ideal MOV for low-voltage protection applications. Its high surge energy capability, low leakage current, fast response time, and compact size make it suitable for use in a wide variety of digital circuits, from embedded and handheld devices to industrial equipment.

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