1N5520D/TR

Overview

The Microchip Technology 1N5520D/TR is a single Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 3.9 V with a tight tolerance of ±1%. The device is rated for a maximum power dissipation of 500 mW and utilizes the DO-204AH (DO-35) axial through-hole package. It operates within a junction temperature range of -65°C to 175°C.

Feature Summary

• Provides precise voltage reference capabilities with high stability due to tight manufacturing tolerances.
• Engineered for reliable operation across extreme environmental conditions, supporting wide thermal ranges.
• Constructed in a hermetically sealed glass axial package suitable for robust through-hole mounting.

Applications

• Precision voltage reference circuits
• Overvoltage protection systems
• Voltage regulator designs

Procurement Notes

Verify the specific suffix 'D' indicates the ±1% tolerance variant when sourcing. Confirm the '/TR' designation corresponds to the reel packaging format required for your assembly process. Ensure compatibility with the DO-35 footprint during PCB layout finalization.

Selection Notes

Select this component when strict voltage accuracy is critical compared to standard tolerance variants. Consider the 500 mW power rating against expected circuit loads. Evaluate the axial lead form factor against available board space constraints.

Part Context

This part belongs to the 1N55xx series of Zener diodes manufactured by Microchip Technology. The series offers various voltage options within the same physical package family, allowing designers to maintain consistent mechanical layouts while adjusting electrical specifications.

Replacement Considerations

Equivalent parts include 1N5520D without the reel suffix or other manufacturers' 1N5520D variants. Verify that substitute components match the 3.9 V nominal voltage and ±1% tolerance requirements.

FAQ

What does the 'D' suffix indicate in the part number?

The 'D' suffix specifies a voltage tolerance of ±1%, offering higher precision than standard tolerance versions.

Is this component suitable for high-temperature environments?

Yes, the device supports a junction temperature range up to 175°C, making it suitable for demanding thermal conditions.