BZW04-145B R0G

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TVS diodes are generally used as an active overvoltage protection component in electric and electronic circuits in order to protect them from ESD, EMI and other kinds of transients. The BZW04-145B R0G is part of the range of TVS diodes within Vishays transient voltage suppressors. This product is specifically designed to protect medical electronic products in which redundancy of protection is a must.

BZW04-145B R0G is a bi-directional TVS diode with a low operating voltage and a fast switching time. Its clamping voltage is 65 V, with a maximum peak pulse current rating of 3.5 A, making it suitable for circuit protection in both low- and mid-voltage applications. In addition, it has a breakdown voltage of 140 V and a maximum reverse leakage current of 10 μA, making it highly resistant to voltage spikes.

The BZW04-145B R0G is especially suited to medical equipment application, as it is designed to handle up to 3.5 A of peak pulse current without fail. This ensures that unexpected current surges can be rapidly clamped down, preventing any serious damage to the sensitive electronic components of the medical equipment. As well, the low leakage current ensures that power remains within the product, keeping it running efficiently and effectively for as long as possible.

The main working principle of the BZW04-145B R0G is based on the avalanche breakdown and dynamic resistance of a reverse-biased PN junction diode. In the event of an overvoltage exceeding the breakdown voltage of the diode, the PN junction breaks down and avails a low dynamic resistance. This causes the overvoltage to be rapidly clamped to a safe level, protecting the circuit from further damage.

The dynamic resistance of the BZW04-145B R0G is adjustable by adjusting the bias voltage, enabling users to optimize the protection circuitry for different applications. In this way, the product may be used as part of a comprehensive protection circuit, or as a standalone component to protect any application for which it is most suitable.

Overall, the BZW04-145B R0G is an excellent choice for circuit protection of medical electronic equipment, and any other low- to mid-voltage applications. Its fast switching time and adjustable dynamic resistance ensures that it can accurately handle any kind of overvoltage, while its low leakage current helps to maximize battery life.

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