1N5377A/TR12

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Voltage - Zener (Nom) (Vz):	91V
Tolerance:	±10%
Power - Max:	5W
Impedance (Max) (Zzt):	75 Ohms
Current - Reverse Leakage @ Vr:	500nA @ 65.5V
Voltage - Forward (Vf) (Max) @ If:	1.2V @ 1A
Operating Temperature:	-65°C ~ 150°C
Mounting Type:	Through Hole
Package / Case:	T-18, Axial
Supplier Device Package:	T-18
Base Part Number:	1N5377

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Introduction

The 1N5377A/TR12 is a Zener Diode, a type of diode that operates with a reverse voltage along the conductor allowing current to flow when it reaches a certain threshold, known as the Zener Breakdown Voltage. The 1N5377A/TR12 is a single diode, meaning it has the capability to both conduct and block current, depending on the voltage and the direction of the current. With the 1N5377A/TR12, the Zener Breakdown Voltage is 8.2 volts, making it a suitable source of reliable power regulation in electronics applications.

Applications

The 1N5377A/TR12 is used in many applications in the field of electronics, largely due to its ability to smoothly regulate power at a constant voltage. It is particularly useful for power supply circuits, where a steady and reliable voltage is necessary. The 1N5377A/TR12\'s 8.2 volt Zener Breakdown Voltage is well suited for the majority of power supply circuits, providing the stability and performance needed for reliable use.The 1N5377A/TR12 is also frequently used for secure electronic applications, such as radio-frequency identification (RFID) tags, which are used in applications such as access control and anti-theft systems. The ability of the 1N5377A/TR12 to handle a wide range of voltages ensures that the power to these systems is kept constant and reliable.

Working Principle

The 1N5377A/TR12 Zener Diode operates by passing current over a reverse-biased junction. When the voltage across the junction of the diode reaches the Zener Breakdown Voltage (V_z), the diode will conduct current. The amount of current passing through the diode is regulated by the voltage, so by maintaining the voltage at V_z, the diode will remain in a state where it is conducting a constant amount of current.This process is based on the theory of Zener Breakdown, where the electric field created by an external voltage eventually exceeds the electric field that is naturally produced by the PN junction of the diode. When this occurs, current is allowed to pass from the P-type to the N-type side of the diode, creating a stable consistent current (known as Zener Current) throughout the diode, even when the external voltage increases.

Conclusion

The 1N5377A/TR12 is a versatile and reliable single Zener Diode, usable in a variety of applications requiring controlled and stable power. Its 8.2 volt Zener Breakdown Voltage is suitable for many power supply and secure applications, and its ability to maintain a constant current ensures that it remains reliable and effective in these areas. The operating principle of the 1N5377A/TR12 shows its capability to adapt to changing external voltages, offering a stable and dependable source of power.

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