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Diodes - Zener - Single

The 1N5388A/TR8 is a single Zener diode designed for an effective resistance range between 27 ohms and 33 ohms. With its high reliability, low operating temperature, and low leakage current capabilities, it is a great component for use in applications where reliability and minimal leakage current is of great importance. Its small capacitance size makes it well suited for use in circuits where space is at a premium.

Its most important feature is its Zener breakdown voltage of 7.4 volts, leading to its various application fields such as switching and regulating power supplies, in linear regulators, in AC and DC line surge protectors, and in a voltage regulator circuit. It is also used in generating low level logic levels and as a temperature compensation device.

Working Principle

The 1N5388A/TR8 Zener diode works according to Zener breakdown principle, wherein a large static electric field is established in a diode when it is passed through reversed bias current. This electric field will increase in strength as the magnitude of the reverse bias current increases. When the electric field produced reaches a certain point, the electrons in the material of the diode become non-bound, and the electrons will then overrun the junction by a certain amount to achieve a very low equilibrium impedance between anode and cathode. The resulting effect is a sudden drop in the forward voltage of the diode, producing a voltage regulator at a known voltage.

The Zener diode characteristics are stable, and the avalanche effect used in producing a well-regulated voltage is less vulnerable to environmental parameters such as circuit temperature, voltage restraints, and noise in the system.

The 1N5388A/TR8 is a low-cost, reliable, and efficient component, offering certain advantages over other types of diodes. Its design is highly consistent and suitable for industrial and consumer applications.

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