ESDAVLC6-1BF4 Circuit Protection

TVS diode is a kind of transient voltage suppression device, which is a solid device with a built-in suppression capacity. The so-called TVS diode is actually a kind of Zener diode, but the Zener breakdown voltage of TVS diode is much higher than that of ordinary Zener diode. And by adjusting the doping concentration and other parameters, its breakdown voltage can be accurately adjusted to the required value. The most common use of TVS diode is in the field of electronic and electrical products as a protection device. For higher level lightning protection, MOV (metal oxide varistor) is usually used in combination with TVS diode.

Among the various TVS diode products released by various manufacturers, ESDAVLC6-1BF4 is one of the products. In the field of application, ESDAVLC6-1BF4 is widely used in customer-oriented computer access control, industrial automatic control, PDA, banking equipment, telecommunication equipment, mobile phone peripheral equipment, automotive electronics, metering equipment and high end consumer products. ESDAVLC6-1BF4 performs well in surge protection, EMC, acceptance test, interference and other tests, and is suitable for 14Vdc power supply system.

ESDAVLC6-1BF4 is mainly composed of three parts, namely semiconductor junction structure, overshoot suppression part, storage temperature part. The principle of action of ESDAVLC6-1BF4 is as follows. During the normal working state, the conduction of the main conduction path is controlled by a pair of PN junction. When the external circuit high voltage reaches the breakdown voltage limit, the main conduction path will be broken and conduct quickly. At this time, the overshoot suppression part will provide enough surge energy to absorb the excess energy, and the storage temperature part will limit the working temperature. Then the recovery voltage gradually decreases, until it reaches the safe range and then restarts the device.

In summary, ESDAVLC6-1BF4 is a kind of TVS diode with wide application fields, powerful surge protection performance and good EMC performance. Its working principle is that when an external high voltage reaches the breakdown voltage it has the ability to conduct quickly, and the overshoot suppression part can absorb excess energy, and the storage temperature part can limit the working temperature.