5KP9.0CA Circuit Protection

TVS diodes are designed to provide electrostatic discharge protection and provide a stable, low-capacitance resistor for high-speed signal lines. 5KP9.0CA is such a product. Let\'s take a closer look at its application field and working principle.

Application

5KP9.0CA is a unidirectional bi-directional bidirectional, non-silicon avalanche TVS diode for overvoltage protection. It has excellent clamping capability and helps protect the circuit from transient overvoltage. The device can withstand ESD pulses up to ± 22 kV (HBM), making it suitable for a variety of applications including automotive, industrial and consumer. It also meets the requirements for international electrostatic discharge immunity standard (IEC 61000-4-2).

5KP9.0CA is specialized for High-Speed Differential signaling and offers a Low Capacitance value from 0.7pF max. Its Working Voltage is from 5.0 to 9.0V, making it perfects for High-Speed UART, RS232 and USB DPlus/DMinus communications.

Working Principle

The working principle of 5KP9.0CA is similar to other TVS diodes. When a voltage higher or lower than its working voltage is applied to the 5KP9.0CA, it begins to conduct current. This current is called a “transient”, and it often exceeds the overvoltage threshold of the system it is protecting. The 5KP9.0CA device then approaches its Peak Pulse Power A.K.A. “PPM”. PPM is the measure of the maximum transient current that the device is capable of conducting. It is typically specified in Amperes. This current is then conducted through the TVS diode, and the energy is dissipated by the TVS diode.

Due to its low internal capacitance, 5KP9.0CA are capable of disabling ESD surges that have a high frequency component which are often present in High-Speed Communication systems. This makes it ideal for protecting UART and USB signals at data rates up to 8Mbps.

The 5KP9.0CA also offers excellent peak pulse power performance. It can withstand pulses up to 16A without causing a permanent reduction in the breakdown voltage of the device. This makes the device particularly suitable for photocouplers, voltage converters and other components that require strong overvoltage protection.

Conclusion

The 5KP9.0CA from TVS diodes is a unidirectional bi-directional bidirectional, non-silicon avalanche TVS diode for overvoltage protection. It has outstanding clamping capability and works with ESD pulses up to ±22 kV (HBM). Its Low Capacitance value of 0.7pF max, Working Voltage 5.0 to 9.0V and Peak Pulse Power Performance up to 16A make it ideal for Industrial, Automotive and Consumer applications, such as High-Speed UART, RS232 and USB DPlus/DMinus Communications.