1N5527D/TR

Overview

The 1N5527D/TR is a single Zener diode manufactured by Microchip Technology, designed for voltage regulation applications. It features a nominal Zener voltage of 7.5 V with a tight tolerance of 1%. The device operates at a test current of 1 mA and exhibits a maximum reverse leakage current of 10 nA. It has a power dissipation rating of 500 mW and a Zener impedance of 35 Ohms. The component supports through-hole mounting in a DO-35 axial package and functions within an extended temperature range from -65°C to +175°C.

Feature Summary

• Provides precise voltage regulation with a 1% tolerance on the 7.5 V Zener voltage.
• Operates reliably across an extended industrial temperature range up to 175°C.
• Features low reverse leakage current for efficient performance in sensitive circuits.

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 replacements. Confirm the TR designation corresponds to tape-and-reel packaging requirements for automated assembly lines. Ensure the DO-35 through-hole package matches the target PCB footprint constraints before finalizing procurement decisions.

Selection Notes

Select this component when a stable 7.5 V reference with high precision is required. The 1% tolerance distinguishes it from standard variants. Consider the 500 mW power rating and DO-35 package size for thermal management and spatial limitations in the design.

Part Context

This part belongs to the Microchip 1N55xx series of glass-passivated Zener diodes. These components are widely used in general-purpose electronic circuits requiring reliable voltage clamping or referencing. The 1N5527D/TR specifically offers tighter voltage accuracy compared to lower-grade counterparts in the same family.

Replacement Considerations

Direct parameter-equivalent substitutes include the bulk-packaged 1N5527D. Other variants such as 1N5527B/TR or 1N5527C/TR share the same voltage but differ in tolerance specifications.