1N5309E3/TR

Overview

The Microchip Technology 1N5309E3/TR is a current regulator diode designed for stable current control in electronic circuits. It features a maximum regulator current of 3.3 mA and a maximum peak operating voltage of 100 V. The device has a maximum power dissipation of 500 mW and operates within a temperature range of -65°C to +175°C TJ. Packaged in the DO-204AA (DO-7) axial leaded format, it is supplied in tape and reel packaging.

Feature Summary

• Provides constant current regulation over a wide voltage range
• High source impedance for effective current limiting
• Suitable for harsh environments with extended temperature capability

Applications

• Current limiting for LEDs and laser diodes
• Biasing transistors and integrated circuits
• Protection against overcurrent conditions in sensitive loads

Procurement Notes

Verify the specific ordering suffix to confirm the tape and reel packaging configuration. Ensure the component meets RoHS compliance requirements if applicable to your design. Confirm the manufacturer's datasheet specifications for electrical tolerances before finalizing procurement plans.

Selection Notes

Select this component when a fixed current source is required independent of supply voltage variations. Consider the 3.3 mA rating and 500 mW power dissipation limits relative to the expected operating voltage. Verify that the axial package fits the available PCB space and mounting constraints.

Part Context

This part belongs to the 1N5308-1N5314 series of current regulator diodes manufactured by Microchip Technology. These devices serve as counterparts to Zener diodes, regulating current rather than voltage. The series offers various current options from 0.22 mA to 4.7 mA in standard axial packages.

Replacement Considerations

Check for direct equivalents within the 1N5308-1N5314 series or other manufacturers' current regulator diodes with matching 3.3 mA current and 100 V voltage ratings. Ensure pinout compatibility and thermal performance are comparable.