1N974B BK

Series:	--
Packaging:	Bulk
Part Status:	Active
Voltage - Zener (Nom) (Vz):	36V
Tolerance:	±5%
Power - Max:	500mW
Impedance (Max) (Zzt):	70 Ohms
Current - Reverse Leakage @ Vr:	5µA @ 27.4V
Voltage - Forward (Vf) (Max) @ If:	1.5V @ 200mA
Operating Temperature:	-65°C ~ 200°C (TJ)
Mounting Type:	Through Hole
Package / Case:	DO-204AH, DO-35, Axial
Supplier Device Package:	DO-35

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Diodes – Zener – Single: 1N974B BK Application Field and Working Principle

Diodes are passive electrical components that allow current flow in one direction only, and are composed of two terminals. In the field of electronics, there are a number of specialized diodes that have specialized applications. Among them is the 1N974B BK Zener diode which is used in a variety of applications, and has a specific working principle.

Types of Diodes

There are various types of diodes available in the market, with each type having its own unique set of characteristics and applications. Common types include junction gate diodes, Schottky diodes, pin diodes, tunnel diodes, light-emitting diodes, and many others. Zener diodes, like the 1N974B BK series, are a type of diode specifically designed to regulate voltage in a circuit. They generally have greater breakdown voltages than other diodes, allowing them to operate in reverse bias and dissipate current while keeping their voltage steady.

1N974B BK Zener Diode

1N974B BK is a series of zener diodes that are designed and manufactured by NXP, one of the leading semiconductor companies in the world. It is available in a range of packages, ranging from SOD–323 to DO–214AC packages and are some of the most widely used zener diodes in both commercial and industrial settings. The device is a single diode and has a voltage range of 9.1–43V, a nominal breakdown voltage of 13V, and a reverse current of maximum 5mA. It also has a power dissipation of 500mW and can operate in temperatures ranging from -55C to +150C.

Use in Electronic Devices

1N974B BK zener diodes are used in a variety of applications, ranging from power supplies to communication systems. In addition to regulating voltage, they can be used to protect circuits from transient voltages, provide circuit isolation, and reduce electromagnetic interference (EMI).These diodes are also used in automotive and industrial applications, as they are capable of handling high power and extreme temperatures. They can be used in DC-DC converters, motor controllers, and even in solar power systems.

Working Principle

A zener diode such as the 1N974B BK is just a normal diode protected from high voltages. It is made up of two regions: the P-region and the N-region. When it is reverse-biased, it operates in the breakdown region and allows a high level of current to pass through it, which results in a stable output voltage. When the device is forward biased, it operates as a normal diode, allowing current to flow in one direction only. By connecting the anode and cathode to a voltage divider network, the device can regulate and maintain a predetermined voltage level.

Conclusion

The 1N974B BK is a series of zener diodes, designed and manufactured by NXP, that are suitable for a variety of applications. These devices are designed to regulate voltage in circuits, dissipate current, and reduce EMI. They are used in a variety of electronics, ranging from communication systems to automotive and industrial applications. The device operates on a simple principle; when reverse-biased, it is in the breakdown region and allows a constant current to flow through it, creating a stable voltage level.

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