BZV55C4V3-TP

Diodes - Zener - Single, or BZV55C4V3-TP, is a three-terminal semiconductor device in which the reverse breakdown voltage is set precisely within a certain voltage range. It works on a principle opposite of a regular diode, with a zener diode permitting current flow from either positive to negative or from negative to positive, depending on the voltage level. It is widely used as both an on/off switch, voltage regulator and for protection against transient voltage surges

The BZV55C4V3-TP is a device rated for a maximum power of 450mW at a zener voltage of 3.9V. It is by far one of the most popular zener diodes thanks to its wide application range, great voltage regulation and overall reliability.

In terms of applications, BZV55C4V3-TP is widely used in voltage regulation, voltage measurement and testing, battery charging and protection circuits, communication systems, LED lighting and many other applications as well. Typically, these diodes are used to provide a constant and stable voltage output in the range of 3.3V to 5V.

To understand the working principle of a BZV55C4V3-TP, referring to its symbol: we need to consider both the forward-biased and reverse-biased condition. In a forward-biased condition (which is when the anode and cathode of the diode are connected in the same direction as the conventional current flows), the diode behaves as a conductor, simply allowing current to pass from the anode to the cathode.

On the other hand, in a reverse-biased condition (which is when the anode and cathode of the diode are connected in the opposite direction as the conventional current flows) it behaves as an insulator not allowing current to pass. However, if a high enough voltage is applied to the anode, the reverse-biased condition can be overcome and a small current will flow through the diode, this is known as the Zener Breakdown effect. This allows for voltage regulation based on the zener voltage of a diode.

In conclusion, the BZV55C4V3-TP is a zener diode specifically designed for use in voltage regulation, voltage measurement and testing, battery charging and protection circuits, communication systems, LED lighting and other applications. It works on the principle of Zener Breakdown, allowing for a stable and consistent voltage output of up to 3.9V.