5KP45CE3/TR13

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TVS - Diodes

TVS - Diodes, also known as Transient Voltage Suppressors (TVSs), are semiconductor elements used to protect sensitive components from catastrophic failure due to transients, or voltage spikes. The 5KP45CE3/TR13 is an example of the type of TVS used in various applications. This article will discuss the application field and working principle of this type of TVS.

Applications

The 5KP45CE3/TR13 is a bidirectional TVS diode with a maximum surge current rating of 45A. It is used in a wide range of applications such as in power supplies, TVs, automotive electronics, surveillance cameras, communications equipment, and computers. It is also used in surge protection on large networks, such as power lines and cable TV. On a smaller scale, the 5KP45CE3/TR13 is used in consumer electronic devices, such as cell phones and portable components.

Working Principle

The 5KP45CE3/TR13’s working principle can be best explained by considering it as a circuit with two components, a diode and a resistor. When a voltage spike occurs, the diode conducts, allowing the current to pass through it. The current then travels through the resistor, which limits its magnitude, before passing through to the device being protected. The diode works immediately following the voltage spike to redirect the current away from the device, effectively protecting it.

When the diode conducts, the device is protected from voltage spikes. This process of protecting the device is called “clamping”, and the voltage at which the device is protected is called the “clamping voltage”. The clamping voltage of the 5KP45CE3/TR13 is 48V, meaning that it will protect the device from any voltage up to 48V.

When the voltage spike passes, the diode works to switch off and redirect the current away from the device. This process is called “unclamping” and it is important to ensure that the unclamp time is shorter than the duration of the spike. If the unclamp time is too long, the circuit will remain clamped for too long and the device will be damaged.

Conclusion

The 5KP45CE3/TR13 is an example of a TVS diode used for surge protection in various applications. It works by conducting voltage spikes, limiting the current with a resistor, and then diverting the current away from the device by unclamping. It is important to ensure that the unclamp time does not exceed the duration of the spike in order to effectively protect the device.

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