P2202AAL

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Thyristors are a type of solid-state switching device that finds its use in a range of applications, including in TVS (transient voltage suppression) systems. The P2202AAL is one type of thyristor, designed for high-demand, high-quality TVS protection.

Application Field

The P2202AAL is designed for protecting sensitive electronic equipment from overvoltages caused by unexpected power surges or surges caused by electrostatic discharge. It is suitable for use in PC power supplies, home appliances, industrial automation, HVAC, automotive electronics, lighting systems, and other sensitive applications.

This TVS thyristor has a peak power rating of 600W, and has an operating voltage range between 5.7 - 275 volt AC/DC, making it ideal for applications which require a wide range of input voltage levels. It boasts high current and voltage capability, with a low response time of just 1 nanosecond.

The P2202AAL is also designed with a built-in thermal cut-off (TCO) for safeguarding from overload current. The TCO will open the circuit in the event of an overload, preventing further damage to the device.

Working Principle

The P2202AAL is constructed of an integrated thyristor chip, a metal oxide varistor, and an inductor. The chip contains two transistors connected in parallel, and is triggered into conduction when the voltage reaches the holding voltage level. The varistor provides surge protection by limiting the voltage spike to a safe level, and the inductor suppresses the transient high frequency response. The internal structure of the P2202AAL is designed to operate in the "bidirectional" region: it conducts in both directions, and allows the current to flow in both directions.

When an overvoltage occurs, the integrated chip triggers conduction, activating the two transistors. The varistor limits the overvoltage as the two transistors conduct the excess current away. The inductor then attenuates the transient effects of the overvoltage by smoothing out the current flow and suppressing high frequency signals. Once the overvoltage dies down, the integrated chip will turn off, keeping the device in its safe operating region.

This robust protection system ensures that the device can handle high-side and low-side overvoltages without damage to the connected electronics, and is ideal for sensitive industrial and automotive applications.

Conclusion

The P2202AAL is a high-performance TVS thyristor designed for protecting electronic devices from transient overvoltages. It has a high power rating, a wide operating voltage range, and a fast response time. It also has a built-in thermal cut-off for overload protection, ensuring that the device and connected electronics will remain safe.

Its robust protection system makes it ideal for applications which require wide voltage ranges and reliable protection from transients. As such, the P2202AAL is a great choice for designers looking for durable and reliable protection for their sensitive electronic equipment.

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