CPDQR5V0UP-HF

TVS-Diodes are a type of protection device used to protect circuit components and systems from overvoltage transients created by external sources, such as lightning strikes, electrostatic discharges (ESD), and inductive fields. The CPDQR5V0UP-HF model of TVS-Diode is a component designed for overvoltage protection, offering superior electrical and thermal performance in medium to high power applications. Its datasheet specs include unidirectional or bidirectional configurations, in a five-volt, fifty-step breakdown voltage array, with a maximum peak pulse current capability of 5.5kA. Below is an overview of the CPDQR5V0UP-HF application field, as well as its working principle.

Application

The five-volt CPDQR5V0UP-HF model of TVS-Diode is highly applicable for insertion inside 12V DC/DC converters, motor drives, white goods, appliances, other industrial electronic devices, and automotive applications. The device is suitable for high-current overvoltage protection, and it is also able to protect downstream circuits from high transient voltage induced by power inductors and overcurrent protection devices. An additional advantage is its very low leakage current across the rated breakdown voltage.

Working Principle

TVS Diodes function on the principle of avalanche breakdown. When a reverse voltage is applied to the junction, the electric field in the depletion region increases exponentially. This accelerates the movement of electrons and holes, as they are accelerated beyond a certain level in the electric field, and the carriers will gain additional energy, resulting in a ‘avalanche’ of electrons and holes. This avalanche of carriers can cause a spike in current of hundreds of amperes, in a very short period of time, due to their inherent high capacitance. The resulting current in the CPDQR5V0UP-HF model follows a profile with a peak of 5.5kA at a maximum of 5V breakdown voltage.

The superior electrical and thermal performance of the device is due to the manufacturing process. These TVS-Diodes are produced with a lightly-doped epi layer, making the depletion layer thicker and more uniform. This reduces the voltage required to cause an avalanche breakdown, thus providing increased robustness against long duration transients. The device also features a large surface area contact providing superior thermal performance.

Conclusion

The CPDQR5V0UP-HF model of TVS-Diode is a high-performance protection device, offering superior electrical and thermal performance, aimed at high-power applications such as 12V DC/DC converters, motor drives, white goods, industrial components, and automotive applications. The device works on the principle of avalanche breakdown, and provides robust protection from overvoltage transients, as well as superior thermal performance.