1N5520/TR

Overview

The Microchip Technology 1N5520A/TR is a single Zener diode housed in the DO-204AH (DO-35) axial through-hole package. It features a nominal Zener voltage of 3.9 V with a tolerance of ±10%. The device supports a maximum power dissipation of 500 mW and operates within a junction temperature range of -65°C to +175°C. Electrical characteristics include a reverse leakage current of 1 µA at 900 mV and a forward voltage of 1.1 V at 200 mA.

Feature Summary

• Provides stable voltage regulation via Zener breakdown mechanism
• Features low reverse leakage current for improved circuit isolation
• Utilizes double plug construction for enhanced reliability
• Supports high-temperature operation up to 175°C junction temperature

Applications

• Voltage reference circuits requiring precise potential levels
• Overvoltage protection stages in sensitive electronic systems
• Clamping applications for transient voltage suppression
• Biasing networks in analog signal processing equipment

Procurement Notes

Verify the specific suffix designation, as official documentation lists the part number as 1N5520A/TR rather than 1N5520/TR. Confirm that the 'A' suffix corresponds to the required ±10% tolerance specification. Ensure the procurement order specifies the tape and reel packaging format indicated by the '/TR' suffix to match assembly requirements.

Selection Notes

Select this component when a 3.9 V reference point is required in through-hole designs. The DO-204AH package offers standard axial mounting compatibility. Consider the ±10% voltage tolerance and 500 mW power rating against circuit load demands. Verify thermal management capabilities given the wide operating temperature range extending to 175°C.

Part Context

This component belongs to the 1N5518B through 1N5546B series of Zener diodes manufactured by Microchip Technology. The series shares common electrical characteristics such as 500 mW power dissipation and similar package styles. These devices are designed for general-purpose voltage regulation and protection tasks across various industrial and commercial electronics applications.

Replacement Considerations

Cross-reference with other manufacturers offering DO-35 packaged Zener diodes rated at 3.9 V and 500 mW. Verify pinout compatibility and thermal performance metrics before substitution. Ensure alternative parts meet the same ±10% voltage tolerance and temperature range specifications.