P1556UALTP

Thyristors are a type of electronic device, widely used for voltage and current control, signal processing, and protection against overload. P1556UALTP is a new thyristor-based overvoltage and overcurrent protection device.

It designed for high-power power-supply, inverters, electronic equipment, and communication equipment protection in case of electrical S/E & overvoltage (OV) conditions. And it can significantly reduce the burden of the TVS.

Application Field

P1556UALTP products are suitable for high power power supply, inverter power supply, electric equipment, communication equipment and other equipments with rated voltage 250-1050V. The range of clamping over voltage of P1556UALTP is from 500V to 1550V, and the peak pulse current range (Ipp) is from 16A to 80A.

Working Principle

The basic working principle of the P1556UALTP is simple. When there is a surge current or a voltage higher than the predetermined threshold of the system, the P1556UALTP begins to conduct, providing a path for the currents to flow through. In this way, the dangerously high voltages and currents are regulated to normal operation levels in order to protect the system.

The working principle of the P1556UALTP is based on the principles of bipolar junction transistor (BJT). The main parts are a gate, an emitter, and a collector. When a pulse current passes through the P1556UALTP, the emitter voltage rises and the gate voltage decreases. The collector voltage is then increased, which causes the device to start to conduct. When the emitter current drops, the device is turned off again, preventing overvoltage and overcurrent conditions.

By smoothing the surging current, the device also provides an environment that helps protect other components in the system from damage due to voltage and current overloads. It also prolongs the life of components by providing lighter currents and voltages.

Conclusion

The P1556UALTP is an advanced thyristor-based overvoltage and overcurrent protection device, which can protect power supplies, inverters, electronic equipment, and communication equipment from overvoltage and overcurrent conditions. It is based on the principles of bipolar junction transistor (BJT), and has a range of clamping overvoltage from 500V to 1550V and peak pulse current range (IPP) from 16A to 80A. It also helps to protect other components in the system by providing a smoother surge current and a lower current than traditional methods.