1N5289 TR PBFREE

Overview

The 1N5289 TR PBFREE is a current regulation diode manufactured by Central Semiconductor Corp. It features a maximum anode-to-cathode voltage of 100V and regulates current at a maximum of 473µA. The device has a maximum power dissipation of 500mW and a maximum limiting voltage of 1.05V. It is housed in an axial DO-7 (DO-204AA) package for through-hole mounting. The component operates within a junction temperature range of -65°C to 175°C.

Feature Summary

• Provides stable current regulation with a fixed maximum current rating
• Supports high-voltage operation up to 100V breakdown
• Designed for surface or through-hole integration via axial leaded packaging

Applications

• Constant current sources for LED driving
• Biasing circuits for semiconductor devices
• Current limiting protection in low-power electronics

Procurement Notes

Verify the manufacturer product number matches exactly, as suffixes indicate packaging variations. Confirm RoHS3 compliance status if environmental regulations apply. Check the datasheet for specific thermal derating curves relevant to your operating environment. Ensure the axial DO-7 package fits your PCB footprint constraints before ordering.

Selection Notes

Select this component when a precise, low-current regulation value near 473µA is required. The 100V rating allows use in higher voltage rails where lower voltage regulators would fail. Consider the 500mW power limit to ensure adequate heat dissipation in enclosed spaces. The axial package is suitable for prototyping or applications requiring robust mechanical leads.

Part Context

This part belongs to the 1N528x series of current regulation diodes produced by Central Semiconductor Corp. These components are designed to replace complex transistor-based constant current circuits with a single, simple two-terminal device. The series offers various current ratings to suit different low-power application needs.

Replacement Considerations

Direct replacements must match the 473µA regulation current and 100V voltage rating. Verify that alternative manufacturers offer the same DO-7 axial package and similar power dissipation capabilities. Check for equivalent limiting voltage characteristics to ensure circuit compatibility.