TV50C131J-G Circuit Protection

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TVS (Transient Voltage Suppressor) devices, such as TV50C131J-G diodes, are surge protective components designed to protect vulnerable electronic components from destructive electrostatic discharge (ESD) and voltage transients. They are basically what most people will think of as surge protectors - small devices that plug into an outlet or that can be wired into the electrical system of a machine.

TV50C131J-G is a bidirectional spark gap diode, which is usually used to protect vulnerable components such as microprocessors, memory, and other integrated circuits in electronic systems from overvoltage transients. It has an ultra-low capacitance clamping voltage of 5V and operates in the400W peak pulse power (8/20μs) and 400A peak surge current (8/20μs) range. Furthermore, it is able to withstand bidirectional Voltages up to 73V, achieving a maximum junction temperature of +175°C. This device is suitable for a variety of ESD protection applications, including power supplies, LAN/WAN/Network equipment, and other sensitive electronic systems that require ESD and voltage transient protection.

The working principle of the TV50C131J-G is based on its function as a spark gap diode. Every diode consists of two terminals which allow the electrons to flow only in one direction. TV50C131J-G can be triggered at a lower breakdown voltage, thus allowing a higher transient voltages to be clamped to safety levels. The breakdown voltage of the TV50C131J-G can vary and peak pulse power usually varies from ~ 5V to 73V, depending on ambient temperature. Once the diode is triggered, the high voltage is instantaneously shunted to ground by the device\'s avalanche breakdown slightly above the metal oxide silicon (MOS) conduction. This limits the maximum voltage that can be applied to the input, thus protecting the circuit from overvoltage transients.

In addition, the TV50C131J-G is equipped with an internal thermistor which protects the device from inrush current, a common cause of damage to sensitive electronics. Inrush current is rapidly increasing current flow resulting from sudden high load voltage changes. The thermistor acts as a restricting element, allowing for current to start flowing gradually and controlling the intense inrush current. This is advantageous in protecting sensitive electronics from quick voltage changes.

In summary, the TV50C131J-G TVS diode is a bidirectional spark gap diode used to protect vulnerable electronic components such as microprocessors, memory, and other integrated circuits in electronic systems from overvoltage transients. It provides features like ultra-low capacitance clamping voltage of 5V, 400W peak pulse power, 400A peak surge current, and a bidirectional maximum working voltage of 73V, and is equipped with an internal thermistor which helps protect the device from inrush current. The working principle of the device is based on its function as a spark gap diode which is triggered at a lower breakdown voltage, thus allowing a higher transient voltages to be clamped to safety levels.

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