P4KA39HE3/73

TVS – Diodes are components that protect electrical devices from damage due to instantaneous or high over-voltages. The P4KA39HE3/73 is a transient voltage suppression diode specifically designed to protect I/O lines of processor-based systems.

Application Field

The P4KA39HE3/73 is a diode solution that is widely used in a variety of consumer and industrial related products. Examples of products are the LIN bus interface, CAN bus interface, USB interface, and Ethernet interface. These diodes are also widely used in I/O protection circuit of computer power supplies. Some other application areas include terminals with touch panels, digital cameras, digital TVs and other portable electronic equipment.

Features and Benefits

The P4KA39HE3/73 comes with several beneficial features. First, its excellent surge capability and ESD protection can be up to 2300W (8/20μs) and 15kV (HBM). Secondly, these diodes have a temperature range of -40°C to + 85°C, making them suitable for a range of outdoor applications. Additionally, its low capacitance of 2.5 pF makes it suitable for high frequency digital circuits.

Working Principle

The P4KA39HE3/73 employs a voltage regulation principle. In response to an instantaneous high voltage, the diode operates in a manner such that the voltage across the device is limited to the avalanche voltage rating. In order to achieve this voltage clamp action, the diode requires a low junction capacitance. This allows for both a low capacitance of 2.5 pF and a lowclamp voltage of 38-39V.

Conclusion

The P4KA39HE3/73 is a transient voltage suppression diode specifically designed to protect I/O lines of processor-based systems. Its low capacitance of 2.5 pF makes it an ideal solution for consumer and industrial related products. The diode also features a low clamp voltage of 38-39V and a temperature range of -40°C to + 85°C. Finally, it provides excellent surge capability and ESD protection up to 2300W (8/20μs) and 15kV (HBM).