1N4475 BK

Series:	--
Packaging:	Bulk
Part Status:	Active
Voltage - Zener (Nom) (Vz):	27V
Tolerance:	±5%
Power - Max:	1.5W
Impedance (Max) (Zzt):	18 Ohms
Current - Reverse Leakage @ Vr:	50nA @ 21.6V
Operating Temperature:	-65°C ~ 200°C (TJ)
Mounting Type:	Through Hole
Package / Case:	DO-204AL, DO-41, Axial
Supplier Device Package:	DO-41

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Introduction:

1N4475 is a bipolar-junction transistor, or BJT. It is an electronic device used to amplify or switch electrical signals. BJTs are widely used in all sorts of electronic equipment, from radios to computers, and this particular model is used in a special application called zener diode. This article will discuss the application and working principle of 1N4475 BK.

Application field:

1N4475 BK is a Zener diode, which is designed to operate in the breakdown region, and it is specifically designed for reverse bias operation. Zener diodes are used to create a stable voltage reference, and they are very useful when a constant voltage is required in circuits working with varying loads. In other words, the Zener diode ensures that the voltage output remains constant regardless of the load on the circuit.Using 1N4475 BK, you can create a very precise voltage reference level, and this makes it useful in many applications. The most popular uses are in power supplies, audio systems and instrumentation.

Working principle:

The operation of a Zener diode such as the 1N4475 BK works on a simple principle - reverse current breakdown. The diode is normally held in reverse bias, with the anode voltage higher than the cathode voltage. In this state, current does not flow through the diode, and the Zener effect does not take place. When the reverse voltage across the Zener diode reaches the Zener voltage, there is an avalanche of electrons that cause a sudden influx of current through the diode. This quickly brings the voltage across the diode back to the Zener voltage, and the diode acts as an efficient voltage regulator. The voltage is not allowed to exceed the Zener voltage, regardless of the current that is passing through it.

Conclusion:

1N4475 BK is an ideal Zener diode for creating a precise voltage reference. It can be used in a wide range of applications, from power supplies to instrumentation, and it is simple to use and understand. The Zener effect ensures that the voltage remains stable regardless of the load on the circuit. This makes it an invaluable tool for any designer.

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