1N5527

Overview

The Microchip Technology 1N5527 is a single Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 7.5 V with a maximum power dissipation of 500 mW. The device exhibits a Zener impedance of 35 Ohms and a reverse leakage current of 500 nA at 6.8 V. It operates within a temperature range of -65°C to +175°C junction temperature. The component utilizes an axial leaded DO-204AH (DO-35) package, suitable for through-hole mounting configurations in electronic circuits requiring stable reference voltages.

Feature Summary

• Provides precise voltage regulation with a nominal 7.5 V Zener potential
• Supports high-temperature operation up to 175°C junction temperature
• Utilizes a standard axial DO-204AH through-hole package for reliable mounting

Applications

• Voltage reference circuits
• Overvoltage protection systems
• Power supply regulation

Procurement Notes

Verify the specific suffix designation (e.g., C, D, B) when ordering, as these indicate distinct tolerance grades such as ±2% or ±5%. Confirm RoHS compliance status and packaging type (bulk vs. tape and reel) against the manufacturer's current datasheet. Ensure the selected variant matches the required voltage tolerance and thermal specifications for the intended application environment.

Selection Notes

Select the appropriate suffix based on required voltage tolerance; 'C' typically denotes ±2% while 'B' indicates ±5%. Verify that the 500 mW power rating suffices for the expected operating current. Ensure the DO-204AH package dimensions align with the PCB layout constraints. Check the maximum reverse leakage current requirements against the 500 nA specification at 6.8 V.

Part Context

The 1N5527 belongs to the 1N55xx series of Zener diodes manufactured by Microchip Technology. This series offers various voltage ratings and tolerance options within the same physical footprint. The component serves as a fundamental discrete semiconductor device for maintaining stable DC voltages in analog and digital circuitry, replacing older generic equivalents with modern manufacturing standards.

Replacement Considerations

Direct substitutes include 1N5527C/TR, 1N5527D/TR, and 1N5527B/TR from Microchip Technology. These variants share identical electrical characteristics but differ in tolerance grades and packaging formats. Cross-brand replacements must match the 7.5 V Zener voltage, 500 mW power rating, and DO-35 package dimensions.