BZW04-20 A0G

A transient voltage suppression (TVS) diode, also known as a transient voltage suppressor or T-diode, is an electronic component or device that is designed to protect electronic systems from sudden and unwanted high voltage surges. The main function of a TVS diode is to act as a one-way “clamp”, protecting components from incoming voltage up to the rated value of the TVS diode. When the TVs diode encounters a voltage spike, it quickly clamps the incoming voltage to a safe level, thus protecting the components connected downstream.

The BZW04-20A0G is a TVS diode with a 4-pin axial-leaded package. This device is recommended for use as a transient voltage surge suppressor for a wide variety of applications, including power supplies, LED chips, computers, automotive, and telecommunications. The device is designed to protect sensitive circuits from transients generated by load switching, induction, and lightning events. It features an internal suppression element, requiring no external components, and surface mounting is highly recommended for better suppression performance.

The BZW04-20A0G can be applied to a wide range of circuits and systems. Not only can it be used to protect against power line transients on power supplies, but it can also be used to protect low voltage circuits, allowing for reliable operation. Additionally, the BZW04-20A0G can be used as an EMI filter, shielding cables from interference.

The BZW04-20A0G has a working principle that is fairly straightforward. When an overvoltage occurs, the protection diode acts as a small resistor that limits the current, which in turn limits the voltage. This limits the amount of current that can flow through the protected circuit and helps to ensure the circuit is not damaged. When the voltage spike ends, the device returns to its quiescent state and will remain in that state until another transient occurs.

In summary, the BZW04-20A0G is a versatile TVS diode that can be used in a wide range of applications and systems. It is able to protect against power line, inductive, and lightning transients, as well as provide decent EMI filtering. It features an internal suppression element and is recommended for surface mounting to ensure better suppression performance. Its working principle is simple in that it limits the current and thus limits the voltage when an overvoltage occurs.