1N5305/TR

Overview

The Microchip Technology 1N5305/TR is a current regulator diode designed for stable current control in electronic circuits. It operates within a DO-7 axial through-hole package and supports a maximum voltage of 100V with a regulated current of 2.2mA. The device handles up to 500mW power dissipation and functions reliably across a temperature range from -65°C to +175°C junction temperature.

Feature Summary

• Provides constant current regulation independent of voltage variations
• Capable of operating at elevated junction temperatures up to 175°C
• Utilizes a standard axial leaded package for through-hole mounting

Applications

• Biasing circuits requiring stable current sources
• LED driver applications needing constant current regulation
• Protection circuits utilizing current limiting characteristics

Procurement Notes

Verify the specific suffix /TR indicates reel packaging when ordering. Confirm the manufacturer part number matches exactly to ensure correct current rating of 2.2mA. Check RoHS compliance status if required by project specifications. Ensure the DO-7 package dimensions fit the intended PCB layout constraints before finalizing procurement.

Selection Notes

Select this component when a fixed current source is needed without complex circuitry. The 2.2mA output suits low-power signal conditioning or biasing tasks. Verify that the 100V breakdown voltage exceeds the maximum circuit potential. Consider the thermal management requirements given the 500mW power dissipation limit in enclosed environments.

Part Context

This part belongs to the 1N53xx series of current regulator diodes manufactured by Microchip Technology. These devices are engineered to maintain a nearly constant current over a wide range of voltages. The series offers various current ratings, with this specific model providing 2.2mA regulation for precision analog and digital applications.

Replacement Considerations

Cross-reference with other 1N5305 equivalents from different manufacturers ensuring identical 2.2mA regulation and 100V rating. Verify pinout compatibility and package dimensions match the DO-7 form factor. Confirm electrical parameters such as dynamic impedance and knee voltage align with original design requirements.