5KP18CE3/TR13

TVS - Diodes: 5KP18CE3/TR13 Application Field and Working Principle

TVS - Diodes, or Transient Voltage Suppression Diodes, are an important technology used in protecting components against transients such as voltage spikes, current surges and electrostatic discharges (ESD). The 5KP18CE3/TR13 is a Transient Voltage Suppressor diode designed to prevent excessive voltage from damaging equipment or causing electric shock. This article will provide an overview of the 5KP18CE3/TR13’s application field, specifications, and working principle.

Application Field

TVS diodes are used in a wide range of applications, from medical and automotive to industrial and consumer. The 5KP18CE3/TR13 is designed for high-temperature applications, and has an operating temperature range of -55degC to 125degC. Its low leak current ensures minimal disruption to the circuit’s operation. It is also designed to be immune to transient spikes up to 18V with a maximum clamping voltage of 5.5V. The 5KP18CE3/TR13 is also suitable for use in touch-sensitive electronic equipment, as its low capacitance and fast response time allows it to protect devices from ESD with minimal disruption to the device’s normal functionality.

Specifications

The 5KP18CE3/TR13 has a maximum repetitive surge current of 1500A with a peak forward current of 1A. It has a surge overvoltage clamp of 5.5V(max), voltage breakdown of 17.7V (min), and a peak surge power of 350W. The diode also has a capacitance of 3pF between terminals, which is low enough to protect against ESD without interfering with normal operation.

Working Principle

TVS diodes are designed to work by providing a very low impedance across their terminals at high surge voltages. This low impedance works to reduce the amount of voltage and current that can pass through the diode, protecting the circuit from overvoltage or ESD. When applied to the 5KP18CE3/TR13, this low impedance works to protect the circuit from excessive voltage, up to its maximum breakdown of 17.7V.

When exposed to a high surge voltage, the diode’s resistance will temporarily reduce, allowing the excess current to be diverted away from the circuit. This diverted current is then dissipated as heat, protecting the circuit from further overvoltage. This process is repeated every time a surge is detected, ensuring that the circuit is always protected.

In order to ensure the diode’s protection capabilities, it is important that the diode is rated for the correct amount of voltage and current that it will be exposed to. This is why it is important to select a diode with the correct ratings for the application.

Conclusion

The 5KP18CE3/TR13 is a Transient Voltage Suppressor diode designed to protect components from transients such as voltage spikes, current surges and electrostatic discharges (ESD). It is suitable for use in high-temperature applications, and is immune to transient spikes up to 18V. The diode has a maximum surge current of 1500A and a peak forward current of 1A, with a surge overvoltage clamp of 5.5V (max) and a voltage breakdown of 17.7V (min). Its low capacitance of 3pF ensures that it can protect against ESD without interfering with normal operation. The diode works by providing a very low impedance across its terminals at high surge voltages, allowing the excess current to be diverted away from the circuit and dissipated as heat, protecting the circuit from further overvoltage.