BZW50-120B Circuit Protection

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TVS diodes, also known as Transient Voltage Suppressors (TVS) diodes, are highly efficient unidirectional semiconductor protection components that absorb large overvoltage pulses and protect communications, data, power, and other common electronic circuits from excessive surge voltages. The BZW50-120B is a popular TVS diode designed to protect electronics from lightning strikes and transient voltage spikes.

BZW50-120B is a two-terminal component designed for bidirectional transient voltage protection. It is available with a variety of breakdown voltages (IT(RMS)).The most significant feature of the BZW50-120B is that its transient peak current rating of 1.5kA and holdover voltage between 10-200V (VBR) can provide a wide range of protection for various components and products. Offering primary lightning protection, the device is ideal for use in power supply systems.

The BZW50-120B has the advantages of low dynamic resistance, high breakdown voltage and wide operating temperature range. It can be used with confidence in direct current, alternating current circuit, and high-frequency circuit protection devices. Applications include power supplies, mobile phones, telematics, automotive electronics, computer motherboards, industrial electronics, robotics, and home appliances.

The working principle of the BZW50-120B is primarily based on the Zener principle. When the capacitor input voltage exceeds the breakdown voltage, the diode begins to conduct current to form two-way short circuits. The voltage passes through the capacitor and is then discharged to the ground, which prevents the voltage of the device from exceeding the indicated breakdown voltage value. In this way, the circuit is protected from high voltage spikes and excessive surges.

Because the BZW50-120B is a two-terminal component, it is relatively easy to install. It also has a small size and can be integrated into the circuit board for protection. The device offers a reliable, fast response for lightning protection and is designed to withstand more than 1.5kA surge current, making it an ideal solution for sensitive electronic equipment. Additionally, the BZW50-120B offers excellent temperature stability and can withstand temperatures ranging from -55°C to +125°C.

In summary, the BZW50-120B is a cost-effective and reliable solution for lightning, transient voltage, and surge protection. Its two-terminal design and fast response time make it an ideal choice for circuit protection design. Its wide operating temperature range and high breakdown voltage make it ideal for protecting components and products in a variety of industrial and consumer applications.

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