5KP90C Circuit Protection

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TVS-Diodes (Transient Voltage Suppressor DIodes) are specialized semiconductor devices designed to protect circuits in electronic devices from transient overvoltage surges. The 5KP90C is an example of one of these devices. It provides a high level of protection against overvoltage surges in both low and high temperature environments, making it ideal for applications where large amounts of current must be switched in a short period of time. Following a surge, the device will reset itself to safe operating conditions.

The 5KP90C is a bi-directional device, meaning that it can protect both Polarities against transient overvoltage. Its Working Voltage Ranging is from 6V to 350V for IEC 61000-4-2 (Air-Gap Discharge), from 5V to 400V for IEC 61000-4-5 (Withstand Voltage) and from 3V to 500V for ESD (Electrostatic Discharge) protection. It also offers a wide operating temperature range from -55°C to +175°C. The nominal clamping voltage of the 5KP90C is approximately 5V. It also has a low capacitance of 0.269pF at 1MHz and a low leakage current of 0.25nA.

The 5KP90C is generally used in applications where transient overvoltage surges need to be handled quickly and safely. Common applications include switching power supplies, DC-DC converters, Solid State Drives, and other computer-related infrastructure such as Optical Drives, Ethernet ports, USB ports, and Serial buses. It is also widely used in automotive applications such as ECU protection or communication isolation, as well as in medical equipment such as defibrillators and ultrasound imaging machines.

The 5KP90C works as a unidirectional or bi-directional voltage suppressor. When subjected to a voltage surge, the device will begin to conduct current from a positive to a negative voltage. If this voltage is greater than the breakdown voltage of the device, then the device will clamp the voltage at the breakdown voltage and begin to absorb the surge energy, thereby protecting the circuit from damage. Once the transient voltage surge has dissipated, the 5KP90C will automatically reset to the safe operating conditions. The device is designed to be able to handle transient overvoltage surges without causing any permanent damage to the device itself.

To conclude, the 5KP90C is a bi-directional protection device that offers a wide range of protection against transient overvoltage surges. It is suitable for use in a wide variety of applications, such as switching power supplies, DC-DC converters, Solid State Drives, and other computer-related infrastructure, as well as in automotive and medical applications. Its working principle is that, when subjected to a voltage surge, it will begin to conduct current from a positive to a negative voltage, if this voltage is greater than the breakdown voltage of the device. Once the transient voltage surge has dissipated, the device will reset to safe operating parameters.

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