1N5300/TR

Overview

The Microchip Technology 1N5300/TR is a current regulator diode designed for through-hole mounting in the DO-7 axial package. It provides a regulated current of 1.43 mA with a maximum voltage rating of 100 V and a power dissipation capacity of 500 mW. The device operates within an extended temperature range from -65°C to +175°C junction temperature, ensuring stability in harsh environments.

Feature Summary

• Provides stable constant current regulation across varying load conditions
• Capable of operation in extreme thermal environments up to 175°C
• Utilizes robust axial leaded construction for reliable through-hole integration

Applications

• Constant current sources for LED driving circuits
• Biasing networks for transistor amplifiers
• Current limiting protection in sensitive electronic loads

Procurement Notes

Verify the specific suffix /TR indicates tape-and-reel packaging when sourcing. Confirm the manufacturer designation as Microchip Technology or its predecessor entities like Microsemi for authenticity. Ensure the component meets the required axial lead form factor for your PCB layout constraints before finalizing procurement.

Selection Notes

Select this component when a fixed 1.43 mA regulation is required without complex circuitry. Verify that the 100 V breakdown voltage exceeds the maximum potential drop across the load. Ensure the 500 mW power rating accommodates the product of regulated current and operating voltage under worst-case thermal conditions.

Part Context

This part belongs to the standard 1N53xx series of current regulator diodes manufactured by Microchip Technology. These devices are legacy components often used in industrial and military applications where long-term availability and proven reliability are critical. The DO-7 package is a standard axial leaded format compatible with traditional manufacturing processes.

Replacement Considerations

Direct replacements include other 1.43 mA current regulator diodes in axial packages such as the JANS1N5300UR-1 for space-grade requirements. Verify pinout compatibility and thermal characteristics when substituting with generic equivalents from other manufacturers.