TPC22AHM3_A/I Circuit Protection

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A TVS (transient voltage suppressor) diode is an electronic type of surge protective device (SPD) used to protect an electrical circuit from high operating voltages. The TPC22AHM3_A/I is a member of Littelfuse’s family of TVS diode products specifically designed to meet the demands of high-voltage surge protection applications. The device is certified compliant with the IEC 61243-3 surge protection regulations, making it suitable for use in tough industrial and automotive environments.

The TPC22AHM3_A/I device provides a high level of protection against overvoltage events, such as powerline spikes, lightning strikes, and power plant transients. A range of rated peak pulse power can be specified, with up to 40kW of peak pulse power available. Other surge parameters such as clamping voltage, response time, and breakdown voltage can also be specified. The device is protected against both ESD and surge events, with a robust glass-coated package and reinforced insulation.

The TPC22AHM3_A/I device features a two-stage response to an overvoltage situation. The first stage is a fast and activated overvoltage protection and the second stage is a slow and deactivated overvoltage protection. The overvoltage current is sensed and then either a controllable MOSFET is turned on or transzore is activated. In both cases, the device quickly clamps the voltage to a safe level. The two stages provide a high degree of protection against transient overvoltages.

In terms of working principle, a TVS diode acts as an overvoltage protection device by intercepting and diverting excessive current during surge conditions. The device consists of a p-type and an n-type material junction called an avalanche breakdown diode. When the current is diverted, it is divided between the two materials forming the diode. This causes the materiel to form a negative resistance which further reduces the current between the two points, effectively clamping the voltage and protecting the circuit.

The TPC22AHM3_A/I device is the ideal choice for a wide range of applications and environments. The device is most commonly used for overvoltage protection in industrial and automotive power systems, such as automotive wiring harnesses, hybrid and electric vehicle systems, industrial power controllers, and power lines. Additionally, it is suitable for applications requiring transient protection from lightning strikes and powerline spikes in consumer electronics, such as smartphones, tablets, and audio equipment.

The TPC22AHM3_A/I is a dependable device and can be used in even the most demanding applications. The combination of a fast response time and a robust protective package provides excellent protection against transient overvoltage events. With a wide variety of ratings and surge parameters available, it is easy to find the ideal solution for any application.

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