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Diodes - Zener - Single

BZX384-C68,115 is an NPN silicon planar small signal diode which is specifically used as a Zener diode. It is suitable for various types of surface-mounted small signal applications, including circuit protection, voltage regulation, feedback, and power management. The device has a nominal zener voltage of 6.8V, a maximum zener current of 10 mA, a package size of 115 mA, and a power dissipation of 600 mW.

Applications

This diode is used for voltage regulation and feedback in electronic circuits. In electronic applications, it can be used as a protective device by regulating the voltage of a circuit and preventing it from exceeding the desired value. By connecting two BZX384-C68,115 diodes in series, the peak inverse voltage (PIV) of an input signal can be reduced and limited, forming an effective voltage regulator. This is useful in protecting circuit components from voltage surges.

Working Principle

The BZX384-C68,115 diode is a combination of two components – a diode and a Zener diode. The diode is used to provide current flow in one direction. When a voltage in excess of the breakdown or “zener” voltage is applied to the diode, current begins to flow in the reverse direction. This reverse-biased current is then passed through the Zener diode, which provides the low voltage regulation. The maximum voltage that can be drawn from the device’s zener diode is determined by its zener breakdown voltage. The zener breakdown voltage of the BZX384-C68,115 diode is 6.8V.

The zener diode also acts as a voltage-limiting element, protecting circuit components from damage caused by high voltages. When an input voltage is higher than the zener breakdown voltage, the zener diode ensures that any additional current is diverted away from the circuit. In this way, the circuit is protected from voltage surges that could otherwise cause damage to sensitive components. Furthermore, the diode helps to reduce power consumption by limiting the output current and preventing the circuit from drawing more power than required.

Because of its low voltage and power consumption, the BZX384-C68,115 diode is ideal for use in compact designs. Its small package size allows for a lower cost per component, making it a cost-effective solution for circuit protection, voltage regulation, and power management.

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