1N5525

Overview

The Microchip Technology 1N5525 is a silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 6.2V with a tight tolerance of 1%. The device operates in the DO-35 axial glass package and supports through-hole mounting. It dissipates up to 500 mW of power at +50°C, with derating required above this temperature. Key electrical characteristics include a maximum reverse leakage current of 1 µA and a dynamic impedance of 30 Ω at the test current.

Feature Summary

• Provides stable voltage regulation with low noise characteristics suitable for sensitive circuits
• Features double plug construction and metallurgically bonded junctions for reliability
• Offers low reverse leakage current to minimize standby power consumption

Applications

• Precision voltage reference sources in analog signal processing
• Overvoltage protection circuits requiring low clamping voltage
• Biasing networks for transistor amplifiers

Procurement Notes

Verify the specific suffix (e.g., B, C, D) as it dictates voltage tolerance and package type. Confirm RoHS compliance status, as standard versions may not meet environmental directives. Check datasheet for MIL-PRF-19500/437 requirements if military-grade specifications are needed. Ensure thermal management accounts for power derating above +50°C.

Selection Notes

Select based on required voltage tolerance; the base 1N5525 typically implies 1% tolerance. Compare against 1N5525B or 1N5525D if tighter tolerances or different packaging are required. Verify operating temperature range matches application needs, as some variants support up to +175°C. Ensure the DO-35 package fits the PCB layout constraints.

Part Context

This component belongs to the 1N55xx series of low-power Zener diodes manufactured by Microchip Technology. These devices are widely used in industrial and commercial electronics for their stability and small form factor. The series includes various voltage ratings and tolerance options to suit diverse circuit design requirements.

Replacement Considerations

Check for direct equivalents from other manufacturers such as ON Semiconductor or Vishay. Verify that substitute parts match the 6.2V nominal voltage, 1% tolerance, and 500 mW power dissipation. Ensure the replacement package is compatible with existing footprints.