1N5379E3/TR8

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Voltage - Zener (Nom) (Vz):	110V
Tolerance:	±20%
Power - Max:	5W
Impedance (Max) (Zzt):	125 Ohms
Current - Reverse Leakage @ Vr:	500nA @ 79.2V
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:	1N5379

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1N5379E3/TR8 – Diodes – Zener – Single

The 1N5379E3/TR8 is a type of semiconductor diode in the Zener series produced by ON Semiconductor (Nasdaq: ON). Zener diodes are renowned for having especially low leakage current and low noise characteristics. This makes them ideal as voltage reference sources for power supplies, and for many specialist applications. The 1N5379E3/TR8 is a Zener single diode in an SOT-223-3 package with a maximum operating temperature of 150°C and a maximum power dissipation of 500mW.

Application Fields

The 1N5379E3/TR8 has a breakdown voltage of 3.3V and is utilized in a number of different application fields. These include managing voltage surges, voltage clamping, ESD (Electro-Static-Discharge) protection, and RF antenna protection, as well as general-purpose Zener diode usage.Within the range of ESD applications, the 1N5379E3/TR8 can be used to protect the individual pins of an integrated circuit or other sensitive components from electrostatic charge. Due to its low-output voltage rating and reverse breakdown voltage, it can also be used as a clamping device to prevent over-charging of a component.The 1N5379E3/TR8 also fulfills a key role in voltage surge control. When positioned at the output of an appliance, the diode can be used to protect components from temporary surges that may otherwise cause damage.

Working Principle

Zener diodes, including the 1N5379E3/TR8, work by using the reverse-bias mechanism. This is when electrical current is forced to flow in the opposite direction to that of conventional flow in a diode. When using a Zener diode as a voltage reference, the flow of current is constant despite minor changes in the applied voltage. When a specific breakdown voltage is reached, the diode kicks in and diverts any surplus charge away from its destination.A Zener diode can also be used in ‘proportional control’, where it has to track a pre-determined voltage level. In this instance, the Zener diode will work by sensing any variation in voltage and making alterations accordingly. This facilitates proportional control of the output current by regulating the ‘gate’ voltage. This gives rise to the term ‘voltage reference device’ when referring to a Zener diode.The 1N5379E3/TR8 uses a specialized ‘multi-layer’ chip technology to strengthen its internal structure and to help reduce noise pick-up. It also has a power-saving operation mode and a low noise level making it ideal for battery powered systems and in applications where noise considerations are key to performance.

Conclusion

ON Semiconductor’s 1N5379E3/TR8 Zener single diode in an SOT-223-3 package is a high-specification, low-power variant of the traditional Zener diode. It is suitable for a range of applications, including ESD protection, voltage surge control, voltage clamping, and as a voltage reference device. The 1N5379E3/TR8 also provides users with a low-noise operation and power-saving mode, thanks to its multi-layer chip technology. This makes it ideal for power supply and specialist applications.

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