JAN1N938B-1

Series:	Military, MIL-PRF-19500/156
Packaging:	Bulk
Part Status:	Discontinued at Digi-Key
Voltage - Zener (Nom) (Vz):	9V
Tolerance:	±5%
Power - Max:	500mW
Impedance (Max) (Zzt):	20 Ohms
Current - Reverse Leakage @ Vr:	10µA @ 6V
Operating Temperature:	-65°C ~ 175°C
Mounting Type:	Through Hole
Package / Case:	DO-204AH, DO-35, Axial
Supplier Device Package:	DO-35

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Introduction

A zener diode is a type of diode that is specifically designed to establish a predetermined voltage drop across either a forward- or reverse-biased diode junction. Zener diodes are used in a variety of applications, such as voltage regulation, voltage stabilisation, and voltage transient suppression. The JAN1N938B-1 diode is an example of a single zener diode.

JAN1N938B-1 Description and Characteristics

The JAN1N938B-1 diode is a 200mW, 3.3V uni-directional zener diode with a ±2% tolerance. It has a maximum operating temperature of +175°C as well as a breakdown voltage of 3.3V. The JAN1N938B-1 is able to operate at a reverse forward current rating of20mA, with a maximum surge current of 800mA. Its reverse current of 10mA and the reverse recovery time of 47ns make it ideal for compression circuits and AC/DC power line protection. It is a uni-directional rectifier with a conditioning that is tailored to match the low voltage and high surge current applications. The JAN1N938B-1 features a low forward resistance and a high operating current, making it a suitable zener diode for these applications.

Application Field

The JAN1N938B-1 diode is used for a variety of applications, such as voltage regulation, voltage stabilisation and voltage transient suppression. It can be used in a wide range of applications.

• In voltage regulation applications, the JAN1N938B-1 can be used to regulate the input voltage in order to ensure that it remains within a preset range. This is important, as too high of a voltage can damage sensitive components while too low of a voltage can cause the system to become unstable.
• In voltage stabilisation applications, the JAN1N938B-1 diode can be used to prevent voltage drops or spikes that could cause damage to sensitive components or disrupt system performance.
• In voltage transient suppression applications, the JAN1N938B-1 can be used to protect a system from high voltage spikes that can occur due to lightning, electrostatic discharge, or other power surges.

Working Principle

When a forward voltage is applied to the JAN1N938B-1 diode, it will allow current to flow in one direction, from the anode to the cathode. This forward current is limited by the diode\'s forward resistance. When the reverse voltage across it exceeds the breakdown voltage, the diode will become conductive in both directions. This is known as the breakdown or zener effect. The JAN1N938B-1 diode is designed to maintain a constant voltage drop between its anode and cathode at all times. This is known as the zener breakdown voltage, and it is typically 3.3V with a ±2% tolerance. The JAN1N938B-1 diode is able to maintain the zener breakdown voltage due to its low reverse voltage leakage current and high surge current capability. It also has a low forward resistance and a high operating current, making it highly suitable for the above-mentioned applications.

Conclusion

The JAN1N938B-1 is a single zener diode designed for applications such as voltage regulation, voltage stabilisation and voltage transient suppression. It is able to maintain a constant zener breakdown voltage due to its low reverse voltage leakage current, high surge current capability, low forward resistance and high operating current. The JAN1N938B-1 diode is an ideal solution for a variety of applications.

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