1N5303-1/TR

Overview

The Microchip Technology 1N5303-1/TR is a current regulator diode designed for stable current control in electronic circuits. It features a maximum regulator current of 1.76 mA and a maximum peak operating voltage of 100 V. The device has a power dissipation rating of 475 mW and operates within a temperature range from -65 °C to +175 °C. Packaged in the DO-204AA (DO-7) axial through-hole format, it is supplied in tape and reel packaging for automated assembly processes.

Feature Summary

• Provides constant current regulation across varying load conditions
• Operates reliably in extreme temperature environments up to 175 °C
• Utilizes axial through-hole construction for robust mechanical mounting

Applications

• Constant current sources for LED driving
• Biasing elements for transistor amplifier stages
• Current limiting protection in sensitive circuit paths

Procurement Notes

Verify the specific suffix designation against official Microchip documentation to confirm package type and reel specifications. Ensure that the ordering information matches the required regulatory compliance standards and environmental certifications for the intended deployment environment.

Selection Notes

Select this component when a fixed low-current regulation value near 1.76 mA is required. Consider the 100 V breakdown limit and thermal management needs for the 475 mW dissipation. Verify compatibility with the DO-7 footprint and automated placement equipment requirements for tape and reel supply.

Part Context

This part belongs to the 1N53xx series of current regulator diodes manufactured by Microchip Technology. These devices are engineered to maintain a steady current flow regardless of voltage fluctuations, serving as critical passive components in analog signal processing and power management applications requiring precise current control.

Replacement Considerations

Cross-reference with other 1N5303 variants or equivalent current regulator diodes from other manufacturers only if electrical parameters such as current tolerance, voltage rating, and package dimensions match exactly. Verify pinout and thermal characteristics before substitution.