BZX79C12 A0G

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The BZX79C12 A0G is a single Zener diode, manufactured to provide a voltage regulator in different applications, such as in power electronics. It is a pre-selected Zener diode from the broad range of zener voltage regulator products of ON Semiconductor. This diode has a nominal zener voltage of 12V and is offered in the DO-35 package.

The BZX79C12 A0G is widely used in power supplies, power converters, motor controls, digital and analog circuits, EMI filters, and for other applications where protection from voltage surges is required. It is also utilized in many applications such as over-voltage protection, reverse battery protection, load switching, or even as a general-purpose voltage regulator. The use of this device helps to maintain a constant and consistent output voltage, regardless of any changes in the input supply.

One of the key features of the BZX79C12 A0G is its wide operating temperature range, ranging from -55°C to +150°C. This device has also been designed with over-voltage and reverse voltage protection, to ensure consistent performance in cases of over-voltage. The device has a forward voltage drop of 1.2V at 25°C and a reverse breakdown voltage of 12V.

The working principle of the BZX79C12 A0G is similar to other Zener diodes where electrons when passing through the device, holes are created on the other side of the diode to balance out the zener voltage. This is called a junction breakdown voltage. The Zener voltage is directly proportional to the reverse current through the device and is controlled by the zener region.

In operation, the current flowing through the device is split into two parts. One part passes through the diode and creates a tunneling effect that releases electrons in the zener region and creates a breakdown voltage. The other part of the current passes around the diode, creating a negative feedback on the overall voltage. This negative feedback ensures that the output voltage is kept within the desired range.

Overall, the BZX79C12 A0G is a robust and reliable single zener diode that offers voltage regulation solutions to a wide range of applications. It is capable of regulating up to 12V without fail, and its wide operating temperature range along with its over-voltage and reverse voltage protection makes it a suitable option for many types of applications. This device has also been designed to maintain a consistent output voltage, regardless of any changes in the input supply.

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