P4KE550-G Circuit Protection

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TVS-Diodes provide potential protection from over-voltage transients, which are caused by external or internal events, that can create disturbances to electronic systems. They provide a capability to conduct high current and redirect the high voltage away from the system. One of the most commonly used and commercially available devices for this purpose is the P4KE550-G TVS-Diode.

The P4KE550-G is a bidirectional, high speed diode. It is based on the P4KE500-G series but provides twice the maximum clamp voltage. It is suitable for various applications that require protection against electrical transients and can offer protection against surges up to 550 volts.

When using the P4KE550-G, it is important to understand its working principle. The device is constructed with an integrated diode which links two terminals. The diode has a voltage reference level at one end, and a clamp level at the other end. When an over-voltage surge is applied, the diode acts as a voltage divider, diverting current away from the protected component, if and only if, the voltage across the diode is greater than the reference level. If the voltage is less than the reference level, then the diode will act like a normal reverse-biased diode.

Besides its overvoltage protection function, the P4KE550-G can also be used in various applications. These include power supplies, motor controls, lighting systems, HVAC systems, UPS systems, radio and digital electronics, and other systems that require overvoltage protection. It can also be used in automotive and aerospace applications, as it is suitable for temperatures ranging from -55°C to +150°C.

The P4KE550-G is also designed for reverse stand-off voltage and is available in many different packages, including SOT-23, DO-214AA, and SMB formats, depending on the application. The device offers simultaneous dual protection against over-voltage transients, and is designed for use with a snubber or a resistor-capacitor protection network for effective voltage clamping.

The wide range of applications for P4KE550-G TVS-Diode make it an ideal choice for a variety of protection applications. Its bidirectional voltage protection, high peak pulse current capability, and low clamping voltage make it an attractive solution for designers who are looking to protect their systems from unpredictable voltage transients.

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