JANTX1N746D-1

Series:	Military, MIL-PRF-19500/127
Packaging:	Bulk
Part Status:	Discontinued at Digi-Key
Voltage - Zener (Nom) (Vz):	3.3V
Tolerance:	±1%
Power - Max:	500mW
Impedance (Max) (Zzt):	28 Ohms
Current - Reverse Leakage @ Vr:	5µA @ 1V
Voltage - Forward (Vf) (Max) @ If:	1.1V @ 200mA
Operating Temperature:	-65°C ~ 175°C
Mounting Type:	Through Hole
Package / Case:	DO-204AH, DO-35, Axial
Supplier Device Package:	DO-35 (DO-204AH)

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Introduction
The JANTX1N746D-1 is a single Zener diode used for a variety of applications. It is a Junction diode used for the rectification of electrical current. Diodes are two-terminal active semiconductor components used for converting DC voltage and AC current. Zener diodes offer an advantage over normal diodes by offering a greater resistance to reverse current compared to normal diodes. This allows it to be used in applications requiring greater current.Application Field
The JANTX1N746D-1 is most commonly used in discrete circuits where a rectifying action is necessary. This can be found in DC/DC converters, voltage regulators, and power supply circuits. The JANTX1N746D-1 can also be used as a reverse polarity protection device by using it to clamp an overvoltage. This makes it ideal for use in various automotive, industrial, and other applications.Working Principle
The basic operating principle of the JANTX1N746D-1 can be broken down into two main stages. Firstly, a forward biased junction is created between the anode and the cathode when a voltage is applied to the device. When the correct level of voltage is supplied, the junction is able to rectify the AC current, allowing only one-directional current to pass through it. Secondly, when the current is reversed, the device becomes a reverse diode by tripping the overvoltage. When the overvoltage passes a certain limit, the device acts as an open-circuit, protecting the connected devices from reverse polarity and possible damage.
The JANTX1N746D-1 can be found with different voltage ratings, with the usual ratings ranging from 5V to 200V. For maximum performance, the Zener voltage should be chosen to meet the applicable input voltage. Additionally, their operational temperature range is typically -40℃ to +85℃ when using the standard diode, however other variations may have different temperature ranges.Conclusion
The JANTX1N746D-1 is a single Zener diode used for a variety of applications. It offers an advantage over normal diodes by providing greater resistance to reverse current. It can also be used for rectification in DC/DC converters, voltage regulators, and power supply circuits; and for reverse polarity protection in automotive, industrial, and other applications. Its working principle consists of two stages: the rectification of current when a forward biased junction is applied, and reverse current protection when the overvoltage passes a certain limit. The device is available with different voltage ratings, and its operating temperature range is typically -40℃ to +85℃.

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