B72580T0950S172

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Transient Voltage Suppressors (TVS) - Varistors, MOVs are voltage dependent protection devices used to protect sensitive circuits against transient over-voltage events. The B72580T0950S172 is a TO-220 form factor TVS with a maximum stand-off voltage of 32V.

The B72580T0950S172 TVS is configured with two PNPN semiconductor layers connected in parallel. This dual layered structure provides a low leakage and low capacitance interrupt device. The diode layers are designed to absorb ESD pulses in an active strain over-voltage environment.

The working principle of the B725800T950S172 device is simple yet effective. Initially, the device is in the off state, meaning that no current is flowing through the two diodes. When the input voltage reaches the breakdown voltage range, a very fast voltage response regime takes place, allowing for a rapid current flow around the PN junction, thus providing the necessary over-voltage protection.

As this particular device does not require a power supply, it is considered an ideal solution for applications demanding low stand-off voltage protection. The most common applications for this device are in data and telecommunications systems, where protection is important against overvoltage events such as electrostatic discharge (ESD) and lightning-induced surges. This TVS device is also used in many consumer products, such as cellular phones and digital cameras.

Another important feature of the B72580T0950S172 is its ability to reduce EMI. The variant depicted in the datasheet has excellent EMI suppression characteristics, covering from 0.15 GHz to 1.1 GHz in order to meet the standard requirements of EN 55022 Class B. These characteristics are achieved by extending the probability of breakdown at frequencies more than 1 megahertz, thus avoiding surprising current peaks at common antenna frequencies. The EMI suppression is also very important in sensitive applications, such as smart cards, medical equipment and optical fiber systems.

In conclusion, the B72580T0950S172 is a comprehensive device designed to protect sensitive circuits against transient over-voltage events. It is a reliable, low-cost solution that can be applied to a wide range of applications, from consumer products to industrial equipment, thanks to its high EMI suppression capabilities and low stand-off voltage protection.

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