1N5526D/TR

Overview

The 1N5526D/TR is a single Zener diode manufactured by Microchip Technology, designed for voltage regulation applications. It features a nominal Zener voltage of 6.8 V with a tight tolerance of ±1%. The device operates in the DO-35 axial through-hole package and dissipates up to 500 mW. Key electrical parameters include a maximum reverse leakage current of 1 µA at 6.2 V, a Zener impedance of 30 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 ±1% tolerance for high-accuracy reference circuits.
• Capable of operation in extreme thermal environments ranging from -65°C to +175°C.
• Features low reverse leakage current to minimize power loss in standby states.

Applications

• Precision voltage reference sources
• Over-voltage protection circuits
• Temperature-compensated regulator designs

Procurement Notes

Verify the specific suffix /TR indicates tape-and-reel packaging when ordering. Confirm that the ±1% tolerance class (D) matches the design requirements, as other variants like B or C offer different tolerances. Ensure the DO-35 through-hole footprint is compatible with the target PCB layout before finalizing procurement.

Selection Notes

Select this component when strict voltage accuracy is required, as indicated by the D suffix denoting ±1% tolerance. Compare against 1N5526B or 1N5526C if looser tolerances are acceptable for cost reduction. Verify that the 500 mW power dissipation rating suffices for the expected current levels in the application circuit.

Part Context

This part belongs to the standard 1N55xx series of glass-passivated Zener diodes produced by Microchip Technology. The series covers a wide range of voltage values from 2.4 V to 200 V. The 1N5526 variant specifically targets the 6.8 V regulation point within this lineup.

Replacement Considerations

Publicly confirmed parameter-equivalent substitutes include 1N5526D and 1N5526D-1. These parts share identical electrical specifications but may differ in packaging format, such as bulk versus reel.