1N5528C/TR

Overview

The 1N5528C/TR is a single Zener diode manufactured by Microchip Technology, designed for voltage regulation applications. It features an 8.2 V nominal Zener voltage with a strict ±2% tolerance, ensuring high precision in reference circuits. The device operates within the DO-204AH (DO-35) axial through-hole package and dissipates up to 500 mW of power. Key electrical characteristics include a maximum reverse leakage current of 500 nA at 7.5 V, a Zener impedance of 35 Ohms, and a forward voltage of 1.1 V at 200 mA. It supports a wide operating temperature range from -65°C to +175°C junction temperature.

Feature Summary

• Provides precise voltage regulation with tight ±2% tolerance on the 8.2 V breakdown voltage.
• Capable of handling high thermal loads with a maximum power dissipation of 500 mW.
• Engineered for extended reliability across extreme industrial and military temperature ranges.

Applications

• Precision voltage reference circuits requiring low drift
• Overvoltage protection stages in sensitive electronic systems
• Clamping applications in signal conditioning paths

Procurement Notes

Verify the specific suffix 'C' indicates the required ±2% tolerance variant, as other suffixes like 'B' or 'D' offer different tolerances. Confirm the '/TR' designation aligns with reel packaging requirements if automated assembly is planned. Cross-reference the manufacturer's latest datasheet for any changes in environmental compliance status or pinout definitions before finalizing procurement specifications.

Selection Notes

Select this component when circuit design demands tighter voltage accuracy than standard ±5% or ±10% variants provide. Ensure the system can accommodate the 35 Ohm dynamic impedance for noise-sensitive applications. Verify that the DO-204AH package fits the available board space and that the 500 mW rating suffices for the expected thermal environment without excessive derating.

Part Context

This part belongs to the 1N55xx series of glass-passivated Zener diodes produced by Microchip Technology. The series is widely utilized in aerospace, defense, and industrial sectors due to its robust construction and wide temperature capability. The 1N5528C specifically targets applications where stable reference voltages are critical, distinguishing it from lower-precision general-purpose regulators.

Replacement Considerations

Publicly confirmed parameter-equivalent substitutes include the 1N5528C (bulk pack) and 1N5528B/TR. Note that the 'B' variant offers ±5% tolerance, which may not meet strict precision requirements. Direct replacements must maintain the 8.2 V nominal voltage, 500 mW power rating, and DO-204AH package form factor.