1N5253B

Series:	--
Packaging:	Bulk
Part Status:	Active
Voltage - Zener (Nom) (Vz):	25V
Tolerance:	±5%
Power - Max:	500mW
Impedance (Max) (Zzt):	35 Ohms
Current - Reverse Leakage @ Vr:	100nA @ 19V
Voltage - Forward (Vf) (Max) @ If:	1.2V @ 200mA
Operating Temperature:	-65°C ~ 200°C
Mounting Type:	Through Hole
Package / Case:	DO-204AH, DO-35, Axial
Supplier Device Package:	DO-35
Base Part Number:	1N5253

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Overview of 1N5253B

The 1N5253B is a single Zener diode specifically designed for use in circuits which require the reliable and precise regulation of voltage. It is made of a semiconductor substrate and is a three-terminal device. The anode and cathode electrodes are connected to its Zener breakdown region and the connection made through an integrated resistor to the external circuit.

Application Field of 1N5253B

1N5253B has various application fields. It can be used in the voltage regulation, voltage stabilizing and voltage protection of electronic circuits. Furthermore, 1N5253B can be used in the TV vertical deflection circuit, in the DC/DC converter, In-Circuit Transistor Tester (ICT), in the piezo-electric motors, as well as in the lighting circuits.

Working Principle of 1N5253B

When a forward current passes through the 1N5253B, a specified amount of voltage is developed across it. This voltage is known as the Zener voltage. The working of the 1N5253B can be explained using the equivalent circuit diagram. This diagram consists of an anode-cathode junction, along with an integrated resistance (Rz ) in series with the diode.In the forward direction, current passes through the 1N5253B due to the voltage applied across its anode and cathode. If a small forward current is induced, the current is primarily determined by the integrated resistor and does not vary much with the external voltage. The operation of 1N5253B also relies upon the Zener effect. This effect is applied when the external voltage reaches a certain level and the Zener diode breaks down. During this condition, the voltage across the diode decreases while the current increases exponentially, producing a constant voltage across the diode. This voltage is known as the Zener voltage.Once the Zener voltage is reached, the 1N5253B can provide a reliable and precise regulation of voltage to the circuit.It also prevents the voltage from increasing beyond the Zener voltage, thus providing a voltage protection function to the circuit.

Conclusion

The 1N5253B, a single Zener diode, is a three-terminal device specially designed for use in circuits requiring reliable and precise voltage regulation. It finds applications in various fields such as in the vertical deflection circuit of TVs, in DC/DC converters, ICTs, piezo-electric motors, and lightening circuits. Moreover,it provides a reliable and precise voltage regulation and voltage protection function to the circuit.

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