BZW04-85B-E3/73

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TVS ( Transient Voltage Suppression ) diodes have become an indispensable component for protecting electronic equipment from over voltage and / or electrostatic discharge. The BZW04-85B-E3/73 is a unidirectional TVS diode intended for transient voltage suppression in a wide range of applications that include personal computers, telecom equipment, and other sensitive digital and analog applications. In this article, we will discuss the application field and working principle of the BZW04-85B-E3/73.

The BZW04-85B-E3/73 is available in a small SOD-323FL package and is able to suppress transients over a wide range of voltage levels. It is a bidirectional diode which is composed of a silicon junction on a chip. The silicon junction operates as a back-to-back Zener diode clamped between two symmetrical junction barriers. This ensures a high level of protection against opposite direction transients. The device is able to provide maximum surge capability of 500W in an 8/20 μs pulse. It has thermal runaway protection built into the device, providing extra protection against over current situations.

The BZW04-85B-E3/73 has a wide variety of applications which include automotive transients protection, industrial process control and power distribution systems, telecom applications and even household appliances where high protection is required against overvoltages. It can be used in wide range of electronic equipment such as microwaves, computers, TV sets, and other consumer electronic devices.

The working principle of the BZW04-85B-E3/73 is based on the Zener diode principle. The Zener diode consists of two different types of semiconductors: an anode and a cathode. The anode of the diode is connected to the source of the pulse which can come from either a lightning strike or an electrostatic discharge. When a voltage greater than its breakdown voltage is applied, current starts to flow through the diode. This current is then converted to heat and dissipates out of the diode. The voltage across the diode remains below its breakdown voltage after the surge current has dissipated, thus providing protection against the over voltage.

The BZW04-85B-E3/73 is a reliable and cost-effective means of providing over voltage protection for a wide variety of electronic and electrical applications. Its wide range of applications, thermal runaway protection, and low power dissipation make it a great choice for many applications.

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