JAN1N4986DUS

Series:	Military, MIL-PRF-19500/356
Packaging:	Bulk
Part Status:	Active
Voltage - Zener (Nom) (Vz):	150V
Tolerance:	±1%
Power - Max:	5W
Impedance (Max) (Zzt):	330 Ohms
Current - Reverse Leakage @ Vr:	2µA @ 114V
Voltage - Forward (Vf) (Max) @ If:	1.5V @ 1A
Operating Temperature:	-65°C ~ 175°C
Mounting Type:	Surface Mount
Package / Case:	E-MELF
Supplier Device Package:	D-5B

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Diodes - Zener - SingleA JAN1N4986DUS is a Zener Diode, which is a type of Diode specifically designed to have a low zener voltage which is very stable and low in variance. It operates in a reverse biased configuration, which is when the Voltage applied is the opposite polarity of the voltage it is designed to regulate. A Zener Diode is used in many applications and the JAN1N4986DUS is no exception, with the primary application being a low-voltage regulator.When operating, the JAN1N4986DUS operates in its reverse bias with the terminal connected to the voltage source (anode) while the other is connected to the load (cathode). When the reverse bias exceed the specified Zener Voltage, the diode begins to breakdown, allowing a current flow between anode and cathode. This then produces a forward voltage of a lower magnitude conforming to the Zener Voltage. This Zener Voltage remains constant regardless of any current flow through the diode, thereby regulating the voltage of the system.The JAN1N4986DUS can also be used as a voltage reference and/or in surge protection circuits as it will automatically switch to the reverse biased state and provide protection up to specified levels when subjected to high surge voltages. When a high spike is provided and the voltage is higher than the Zener Voltage, the diode will effectively become a short circuit (break-down occurs) and the current flow is reduced. This prevents damage to the system and allows the voltage to be brought back down to the required level and regulated.Applications of the JAN1N4986DUS Zener Diode include:1. Regulating and stabilizing of small DC voltages. By connecting a Zener Diode directly across a load, an overload voltage is created which prevents the voltage from changing or fluctuating above or below the specified voltage, acting as a voltage limiter.2. Low-power supply regulation with noise, ripple, and over-voltage protection. As the voltage is regulated, any fluctuations due to noise in the current or power supply will not be transferred to the output and damage the sensitive components.3. Controlling of pulses or noise from sensitive input sources .By placing a Zener Diode across the input terminals, any current which is induced due to noise at this stage will be leveraged by the diode and does not effect the power of the output.4. Reduction of voltage in power supplies. By using a Zener Diode in series to reduce the output voltage, the power transfer efficiency and performance of the overall system is increased due to the reduced voltage drop.These are just some of the applications that the JAN1N4986DUS is designed to be used in and with its low power consumption and high scale of useful temperature, its ideal for low-power applications and systems that require long-term stability and reliability. In addition, with its small size and low cost, it is easy to implement into existing designs and is ideal for circuit designs looking to save on space and money.

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