1N5291 TR PBFREE

Overview

The 1N5291 TR PBFREE is a current regulator diode manufactured by Central Semiconductor Corp. It provides a regulated current of 616 µA with a maximum power dissipation of 500 mW and a maximum anode-to-cathode voltage rating of 100 V. The device utilizes silicon technology and is housed in a DO-35 axial through-hole package. This component functions as a constant current source, regulating current over a broad voltage range.

Feature Summary

• Provides stable current regulation across a wide operating voltage range
• Utilizes silicon-based construction for reliable performance
• Designed for axial leaded mounting configurations

Applications

• Constant current sources for LED biasing
• Current limiting circuits in electronic systems
• Biasing elements for transistor amplifier stages

Procurement Notes

Verify the specific suffix 'TR' against the manufacturer's official documentation to confirm tape-and-reel packaging requirements. Ensure the DO-35 axial package aligns with the target PCB footprint. Confirm RoHS compliance status directly from the datasheet before finalizing procurement specifications.

Selection Notes

Select this component when a fixed current of approximately 616 µA is required within a 100 V limit. Compare dynamic impedance and temperature stability characteristics against alternative current regulator diodes. Ensure the 500 mW power rating accommodates the maximum expected voltage drop across the device during operation.

Part Context

This part belongs to the standard 1N5283-1 through 1N5314-1 series of 0.5 W current regulators. These devices serve as counterparts to Zener diodes by regulating current rather than voltage. The series offers various current values in standard tolerances within similar axial-leaded packages.

Replacement Considerations

Cross-reference with other manufacturers offering equivalent 616 µA current regulator diodes in DO-35 packages. Verify that substitute parts meet the same 100 V maximum voltage and 500 mW power dissipation ratings.