1N5262B (DO-35)

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Introduction

1N5262B (DO-35) is a commercial zener diode device belonging to the family of Single Zener diodes. It is a high-performance device designed with low noise and very low reverse leakage. It is a well-suited device to be used as an active part of a 3.3V-regulated power source.

Application Field

1N5262B (DO-35) is primarily used in low noise 3.3V regulated power sources. It finds its applications in virtually all electrical and electronic applications which require precision voltage regulation. Its good temperature coefficient and long-term thermal stability make it an ideal choice for voltage regulation in end-devices such as digital-to-analog converters, analog-to-digital converters, or radio receivers and transmitters.

Working Principle

1N5262B uses conventional zener diode technology to regulate an input voltage to a specified output voltage. The device comprises of anomalous rectification, a highly conducted junction and a resistor in series with a diode. When an input voltage is applied to the junction, it creates a conductive path, allowing current to flow through the circuit and a voltage to drop across the resistor. This voltage drop is measured and then, depending on the design, a voltage regulator is used to maintain the output voltage at the designed value. This regulation works regardless of the current fluctuations in the input voltage and is quite useful when dealing with rapidly fluctuating and unstable voltages.

Characteristics

1N5262B has a breakdown voltage of 3.3V, and a peak working voltage of 6V. The device can handle forward currents of up to 5A, and power dissipation of up to 1.7W. It has a reverse leakage current of 1µA (max) at 3.3V, and a power temperature coefficient at 0.4%/°C. It is encapsulated in a DO-35 ceramic package, making it suitable for use in high-precision circuits.

Conclusion

1N5262B (DO-35) is an ideal choice for precision regulation in portable and low-noise applications. Its extremely low reverse leakage and high forward current-handling capability make it suitable for high-performance circuits. The impressive temperature coefficient, zener voltage, and power dissipation- temperature coefficient characteristics make it a reliable, cost-effective solution for voltage regulation in various types of end-devices.

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