1N4906

Series:	--
Packaging:	Bulk
Part Status:	Active
Voltage - Zener (Nom) (Vz):	12.8V
Tolerance:	±5%
Power - Max:	400mW
Impedance (Max) (Zzt):	100 Ohms
Operating Temperature:	-25°C ~ 100°C
Mounting Type:	Through Hole
Package / Case:	DO-204AA, DO-7, Axial
Supplier Device Package:	DO-7

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Diodes - Zener - Single

1N4906 is a type of diode that is commonly used to provide constant voltage in electrical circuits. It is a type of Zener diode which has a reverse breakdown voltage that is much lower than that of a standard forward-biased diode. This makes it ideal for applications such as voltage regulation, overvoltage protection, and voltage reference. The 1N4906 is a small-signal PIN diode (a type of semiconductor diode made from a silicon wafer) and is rated to operate at a maximum power of 500 mW and a reverse breakdown voltage of 6.4 V.

Application field

The 1N4906 diode is widely used in a variety of electronic applications. It has a low reverse breakdown voltage and can be used as a voltage regulator, overvoltage protection device, or voltage reference. It is a popular choice for regulating the voltage in AC-DC power supplies and flyback circuits. It is also used in motor drives and in noise-sensing circuits and amplifier applications.

Working Principle

The working principle of the 1N4906 is based on the characteristics of a PIN diode and its reverse breakdown voltage. When the voltage across the diode exceeds its reverse breakdown voltage, it begins to conduct in the reverse direction - allowing current to flow in both directions. This, in turn, limits the voltage across the diode, ensuring that the voltage output remains constant. The 1N4906 also features a low capacitance, allowing it to respond quickly to sudden changes in voltage. This makes it particularly useful in applications where a fast response time is needed, such as motor drives and noise-sensing circuits.

Conclusion

In conclusion, the 1N4906 diode is a small-signal PIN diode that is widely used for voltage regulation, overvoltage protection, and voltage reference applications. It has a low reverse breakdown voltage and a low capacitance, which makes it suitable for fast-responding applications.

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