1N4686 BK

Series:	--
Packaging:	Bulk
Part Status:	Active
Voltage - Zener (Nom) (Vz):	3.9V
Tolerance:	±5%
Power - Max:	500mW
Current - Reverse Leakage @ Vr:	5µA @ 2V
Voltage - Forward (Vf) (Max) @ If:	1.5V @ 100mA
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

The 1N4686 BK belongs to a type of diode widely used in electrical engineering and electronics circuits, known as a Zener diode. First invented in the early 1920s and named after its inventors Julius Zener and Clarence Zener, these components are used to regulate voltage in electronic devices. Zener diodes are particularly useful for controlling unwanted power surges, acting as a bridge between elements in electrical circuits and providing adjustable voltage control, sorting and stabilizing the electric current that flows through the device.The 1N4686 BK diode is one type of Zener diode and is also known as a ‘small signal’ diode. It is made of a low cost, non-rectifying type of silicon semiconductor material and typically has a significantly higher breakdown voltage than regular diodes. This feature makes it useful for controlling unwanted reverse currents, regulating voltages and creating a stable output in the circuit without any fluctuations. In the ideal world the 1N4686 BK Zener diode will only conduct current in one direction and block it in the opposite direction, however in the real world some small leakage current is inevitable due to the imperfect nature of the components.1N4686 BK diodes are especially popular for their low power consumption. In most cases, the power handling capability and high speed of a 1N4686 BK device make it suitable for use in power supplies and electronic regulators, as well as noise elimination in general electronic circuits. Additionally, thanks to the fact that modern integrated circuits can contain hundreds or even thousands of 1N4686 BK Zener diodes in a single chip, they can be used to detect and protect against various kinds of voltage spikes. As a result, these diodes are highly utilised in consumer electronics, telecommunications and other devices and industries in which successfully managing unpredictable power surges is of the utmost importance.The working principle of a 1N4686 BK diode is relatively straightforward. When a voltage is applied across the device’s terminals, the current travels through the diode and towards its anode. When the applied voltage reaches the device’s Zener voltage, the reverse biasing current starts to flow, and the built-in Zener resistance kicks in. This resistance helps stabilize the current flow and provide continual and stable output in the circuit. In case of power spikes above the device’s Zener voltage, however, the diode may be damaged, so it’s important to take this into account when setting up any circuits.In conclusion, the 1N4686 BK is a type of Zener diode belonging to the family of small signal diodes. It is popular for its low cost and low power consumption, and because modern integrated circuits can contain multiple 1N4686 BK diodes in a single chip, its popularity is expected to stay strong in the foreseeable future as well. It’s frequently used in power supplies, electronic regulators and noise elimination, plus to protect against various kinds of voltage spikes, and its working principle is just as simple as with any other type of diode.

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