1N5528

Overview

The Microchip Technology 1N5528 is a single silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 8.2 V with a maximum power dissipation of 500 mW. The device operates within a junction temperature range of -65°C to +175°C and utilizes the DO-204AH (DO-35) axial through-hole package. Key electrical characteristics include a test current of 1 mA, a maximum reverse leakage current of 500 nA at 7.5 V, and a dynamic impedance of 40 Ohms.

Feature Summary

• Provides stable voltage reference using single Zener configuration
• Operates reliably across extended industrial temperature ranges
• Utilizes standard axial leaded package for through-hole mounting

Applications

• Voltage regulation circuits
• Reference voltage generation
• Overvoltage protection

Procurement Notes

Verify the specific tolerance suffix (e.g., B for ±5%, A for ±10%) required for the design, as the base part number covers multiple variants. Confirm RoHS compliance status, as some historical or military-grade versions may not meet current environmental standards. Ensure the selected variant matches the required packaging format, such as bulk or tape and reel, to align with assembly processes.

Selection Notes

Select this component when a fixed 8.2 V reference is needed in a through-hole layout. Consider the 500 mW power rating against expected operating currents to ensure thermal safety. Evaluate the 40 Ohm dynamic impedance for noise sensitivity requirements in precision analog sections.

Part Context

This component belongs to the 1N5528 series of Zener diodes manufactured by Microchip Technology. It is part of a broader family of voltage regulator diodes that share similar electrical profiles but differ in tolerance grades and packaging options. The series supports various industrial and commercial applications requiring reliable voltage clamping.

Replacement Considerations

Direct substitutes include other manufacturers' 1N5528B or 1N5528A equivalents. Verify pinout compatibility and package dimensions before substitution. Cross-reference datasheets to confirm matching Zener voltage and power dissipation ratings.