JANTX1N4109-1

Series:	Military, MIL-PRF-19500/435
Packaging:	Bulk
Part Status:	Active
Voltage - Zener (Nom) (Vz):	15V
Tolerance:	±5%
Power - Max:	500mW
Impedance (Max) (Zzt):	100 Ohms
Current - Reverse Leakage @ Vr:	50nA @ 11.4V
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 JANTX1N4109-1 is a single-diode Zener diode manufactured by NEC. It is a low-power, “surface mount” diode that is ideal for applications in which space and installation time are an issue. The high reliability, low noise levels and low cost of this diode make it a popular choice for a variety of electronics applications.

Application Field

The JANTX1N4109-1 is typically used in voltage regulation and voltage protection circuits. It is especially suited for small, low-power and cost-sensitive designs in which a high degree of performance and reliability is desired. It can also be used in clipper circuits and other types of voltage protection circuits. Some other common applications of this diode are as a noise transient suppressor, as a temperature indicator or as a temperature dependent resistance in temperature measurement circuits.

Electrical Characteristics

The JANTX1N4109-1 is a low voltage, low power Zener diode, with a Zener voltage of 4.3 V and a Zener current of 100 mA. Its dynamic resistance is typically around 18.8 Ω, while its capacitance is usually between 800 and 1000 pF, depending on the reverse voltage applied. Its junction capacitance is typically between 5 and 6 pF. The diode\'s maximum peak pulse power rating is 375 mW and it has a maximum surge current rating of 50 A.

Working Principle

The JANTX1N4109-1 Zener diode works by utilizing the Zener effect, which is the property of a reverse-biased PN junction to break down and pass current in the reverse direction, when the applied voltage is greater than the parasitic gap. The breakdown voltage is determined by the design of the diode and is typically around 4.3 V for the JANTX1N4109-1 diode. When the diode is subjected to a reverse bias voltage greater than its specified Zener voltage, the resulting current increases exponentially until the Zener voltage is reached and the Zener voltage is maintained over a large range of current. This allows the diode to regulate the voltage irrespective of the load, maximum or minimum.

Conclusion

The JANTX1N4109-1 is a low-cost, reliable surface mount Zener diode designed for small, cost-sensitive applications. It is capable of regulating voltage levels over a large range of current. The diode’s low power, low noise and high reliability make it a popular choice for a variety of electronics applications.

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