1N5529B-1

Overview

The Microchip Technology 1N5529B-1 is a Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 9.1 V with a tolerance of ±5%. The device operates at a test current of 1 mA and has a maximum power dissipation of 500 mW. Key electrical parameters include a reverse leakage current of 100 nA, a dynamic impedance of 45 Ohms, and a forward voltage drop of 1.1 V. It is housed in the DO-35 (DO-204AH) through-hole package.

Feature Summary

• Provides stable voltage regulation via Zener breakdown characteristics
• Suitable for general-purpose protection and reference circuits
• Available in standard axial leaded package for through-hole mounting

Applications

• Voltage regulation in electronic circuits
• Overvoltage protection
• Voltage reference applications

Procurement Notes

Verify the specific suffix (e.g., -TR for tape and reel or bulk packaging) against project requirements. Confirm RoHS compliance status as it varies by manufacturer revision. Ensure the DO-35 footprint matches the PCB design. Cross-reference datasheets from authorized distributors to confirm current availability and manufacturing origin details before finalizing procurement.

Selection Notes

Select this component when a 9.1 V regulation point is required with moderate power handling capabilities. The 500 mW rating suits low-current applications. Verify that the ±5% tolerance meets circuit precision needs. Consider thermal management if operating near maximum power dissipation limits in enclosed environments.

Part Context

This part belongs to the 1N55xx series of Zener diodes manufactured by Microchip Technology. These components are widely used in discrete semiconductor applications requiring reliable voltage clamping. The series offers various voltage options within the same physical package format, facilitating standardized inventory management for common voltage levels.

Replacement Considerations

Compatible substitutes include other manufacturers' 1N5529B equivalents meeting the 9.1 V, 500 mW, and DO-35 specifications. Ensure electrical parameters such as dynamic impedance and leakage current are comparable. Verify pinout compatibility and thermal characteristics before substitution.