BZV90-C18,115

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Diodes are a type of electrical component that allows electricity to pass in one direction – from anode to cathode – but blocks it from flow in the opposite direction. Zener diodes have a highly doped p-n junction, which allows current to flow in the reverse direction, when the voltage exceeds the zener breakdown voltage. This is useful in regulating and stabilizing voltages. A single zener diode can be used to provide voltage regulation, limiting current and thermal protection.

BZV90-C18,115 is a single zener diode, made by STMicroelectronics. It has a zener breakdown voltage of 18V and a maximum power dissipation of 1.5W. It has a peak reverse voltage of 90V, a typical reverse current of 0.3mA, a regulator power dissipation of 10mW, a regulator voltage noise of 0.4mV, and a regulator temperature coefficient of 4mV/°C.

The main application fields for BZV90-C18,115 are power supply design and microwave applications. It can be used in power supply designs to provide safeguards in the event of an overvoltage condition, or to protect against sudden increases in voltage. In microwave applications, the diode can be used to protect active elements. The diode can also be used for other circuit protection functions and voltage regulation applications.

The key to understanding the working principle of BZV90-C18,115 is understanding the zener breakdown voltage. When the reverse voltage is below the breakdown voltage, the diode behaves like a standard diode, allowing current to flow in the forward direction, while blocking reverse current flow. But, when the reverse voltage is greater than the breakdown voltage, the diode can conduct in reverse. This allows current to flow through the diode in the reverse direction, effectively limiting the voltage. This is referred to as zener breakdown.

The working principle of the BZV90-C18,115 is further demonstrated in the figure, which shows the voltage-current (V-I) characteristic of the diode. As the voltage increases from zero volts, the current increases linearly, until it reaches the breakdown voltage. At the breakdown voltage, the current dramatically increases, as the diode begins to conduct in the reverse direction. This limits the voltage to the breakdown voltage, and is the essence of voltage regulation.

The BZV90-C18,115 is a reliable and high-performance single zener diode, with a wide range of applications. It has a breakdown voltage of 18V and a maximum power dissipation of 1.5W, making it suitable for use in power supplies and microwave applications. The diode is also capable of voltage regulation and thermal protection, thanks to its zener breakdown voltage.

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