1N5522

Overview

The Microchip Technology 1N5522 is a single Zener diode designed for voltage regulation and reference applications. It features a nominal Zener voltage of 4.7 V with a maximum power dissipation of 500 mW. The component utilizes a DO-204AH (DO-35) axial through-hole package, supporting operation across a junction temperature range of -65°C to 175°C. Key electrical characteristics include a reverse leakage current of 2 µA at 2 V and a forward voltage of 1.1 V at 200 mA.

Feature Summary

• Provides stable voltage regulation via Zener breakdown mechanism
• Capable of handling high junction temperatures up to 175°C
• Offers low reverse leakage current for efficient standby performance

Applications

• Voltage reference circuits requiring precise potential levels
• Overvoltage protection in sensitive electronic systems
• Clamping applications in signal processing paths

Procurement Notes

Verify the specific tolerance suffix (e.g., A, B, D) required for your design, as the base part number covers multiple variants with different accuracy levels. Confirm RoHS compliance status and assembly site details via the latest datasheet or PCN documents before finalizing procurement specifications.

Selection Notes

Select this component when a 4.7 V regulation point is needed in a through-hole layout. Ensure the circuit can dissipate the rated 500 mW power without exceeding thermal limits. Compare leakage and impedance specs against other suffixes if tight tolerance or low noise is critical for the application.

Part Context

This device belongs to the standard Zener diode family manufactured by Microchip Technology. It shares the DO-35 axial leaded form factor common in legacy and industrial electronics. The product line supports various voltage values and tolerance grades within the same physical package structure.

Replacement Considerations

The 1N5522D/TR is documented as a parameter-equivalent substitute from Microchip Technology.