BZX585-B4V7,115

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Diodes - Zener - Single: BZX585-B4V7,115 Application Field and Working Principle

In electronics, Diodes - Zener - Single can be broadly defined as a two-terminal passive component that behaves like a combination of a switch, a capacitor, and a resistor. The most popular and ubiquitous of these components is the BZX585-B4V7,115. This component is a three-terminal silicon-based device whose capacitor-like properties can be used in a variety of electronic applications. It has a pair of reverse-biased Zener diodes connected together in series, with the zero-bias resistance between them being about 11.5 ohms.

The main advantages of the BZX585-B4V7,115 are its high reverse-voltage specifications, its low power dissipation and its wide spectrum of applicable applications. It is widely used in commercial applications ranging from consumer electronics to industrial automation. This component can be used in applications such as power monitoring, voltage clamping, signal shaping, and overvoltage protection, among many others.

The primary purpose of the Zener diode is to regulate a certain voltage between two points in order to protect the device from excessive voltage. A simple analogy for this process is a faucet connected to a sink. When the faucet is open, the pressure in the sink increases as more water is allowed in, but the pressure of the water coming out of the faucet remains relatively constant. The role of the Zener diode in this analogy is similar to that of the faucet, except the pressure of the current is regulated to remain relatively constant.

To use a Zener diode in an electrical circuit, the voltage across its terminals must be greater than a certain amount, known as the Zener breakdown voltage. When this happens, the Zener diode becomes a conductor, letting current flow in only one direction between the two points. This can be used for a variety of functions, including signal clipping, AC/DC power conversion, overvoltage protection and signal attenuation. In the BZX585-B4V7,115, this breakdown voltage is set to 5.85V.

The two internal Zener diodes within the BZX585-B4V7,115 are connected in series in order to increase the device’s breakdown voltage from 5.85V to 11.5V. This makes it suitable for applications where the power supply voltage may exceed 5.85V. By adding the two Zener diodes in series, the total breakdown voltage of the BZX585-B4V7,115 is approximately double, thus allowing it to handle higher voltage applications.

When current passes through the device, the voltage at the point which is connected to both Zener diodes will remain perfect constant since the Zener diodes acts like a resistor and allow only limited current to flow. This level of voltage is known as the Clamping Voltage. The Clamping Voltage is dependent on the number of diodes in the device and the value of the fixed breakdown voltage, such as 5.85V in the BZX585-B4V7,115.

The BZX585-B4V7,115 is also capable of operating in both AC as well as DC circuits. In AC circuits, the device can be used to attenuate high frequency signals, while in DC circuits it is used to protect the circuit from high overvoltage and breakdowns by clamping the voltage.

Overall, the BZX585-B4V7,115 is a very versatile device that can be used in a variety of applications. Its pair of Zener diodes connected in series make it capable of handling higher voltages, while its Clamping Voltage allows it to operate both in AC as well as DC circuits. This makes it suitable for applications such as signal shaping, overvoltage protection, power monitoring, and voltage clamping, among others.

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