1N4687 BK Allicdata Electronics
Allicdata Part #:

1N4687BK-ND

Manufacturer Part#:

1N4687 BK

Price: $ 0.31
Product Category:

Discrete Semiconductor Products

Manufacturer: Central Semiconductor Corp
Short Description: DIODE ZENER 4.3V 500MW DO35
More Detail: Zener Diode 4.3V 500mW ±5% Through Hole DO-35
DataSheet: 1N4687 BK datasheet1N4687 BK Datasheet/PDF
Quantity: 1000
2500 +: $ 0.27783
Stock 1000Can Ship Immediately
$ 0.31
Specifications
Series: --
Packaging: Bulk 
Part Status: Active
Voltage - Zener (Nom) (Vz): 4.3V
Tolerance: ±5%
Power - Max: 500mW
Current - Reverse Leakage @ Vr: 4µA @ 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
Description

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The 1N4687 BK diode is a type of diode commonly used in electronics. It belongs to the Zener diode family, and is a single type of diode. The 1N4687 is a general purpose, voltage stabilized Zener diode mostly used in accomplishing temperature compensation and voltage regulation. It is a static reverse complex with a breakdown voltage rating of 6. 8V at a 75°C junction temperature (TJ).

Application Field

The 1N4687 BK diode can be found in a variety of applications as it helps in achieving various signal conditioning, voltage regulation, and other voltage-dependant functions. Due to its breakdown voltage rating and precise temperature compensating resistor, it is mainly used in power electronics, measuring instruments, computers and communication equipment, lighting, and auto-control circuits. Furthermore, it can also be applied in high reliability and air tightness applications such as pacemakers, gas detectors, and temperature controlling circuits.

Working Principle

The working principle of the 1N4687 BK diode is relatively simple. Through a high resistance, the diode acts as a voltage-controlled resistor that regulates the voltage to a constant specified level. The diode is connected in a reverse-biased voltage configuration, and as the voltage applied across the diode rises, so does the current. Once the voltage reaches the breakdown voltage, the current starts to increase exponentially, with the maximum current being limited by the design of the diode. This phenomenon is referred to as Zener breakdown, and is what allows the 1N4687 BK diode to achieve its voltage regulation functions.

In addition, the 1N4687 BK diode contains a temperature compensating resistor which prevents the Zener breakdown current from changing too drastically with temperature. This prevents the diode from becoming too hot, and also allows it to maintain a constant voltage in various different temperature environments.

Conclusion

The 1N4687 BK diode is a great choice for a wide range of applications. Its main advantages include its low breakdown voltage rating, precise temperature compensation, and steady regulation of voltage. All these features make it an ideal choice for measuring instruments, computers and communication equipment, lighting, and auto-control circuits, as well as high reliability shipping and temperature controlling applications. With their relatively simple and economic working principle, these diodes are the perfect choice for all your voltage regulating needs.

The specific data is subject to PDF, and the above content is for reference

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