1N5297 TR PBFREE

Overview

The 1N5297 TR PBFREE is a silicon current regulator diode manufactured by Central Semiconductor Corp. It provides a constant current output of 1 mA with a maximum limiting voltage of 1.35 V. The device is housed in a DO-7 glass axial package and supports a maximum power dissipation of 0.5 W. It operates within a temperature range of -65°C to +200°C and has a minimum dynamic impedance of 800,000 Ω.

Feature Summary

• Provides stable constant current regulation for circuit applications
• Utilizes robust glass axial packaging for environmental durability
• Supports extended operating temperatures up to 200°C

Applications

• Constant current sources for LED driving
• Biasing circuits for transistors and active components
• Current limiting protection in electronic systems

Procurement Notes

Verify the specific manufacturer designation, as Cobham PLC is also listed as a producer for this part number. Confirm RoHS compliance status and ensure the DO-7 glass package matches the design requirements. Check for any assembly location changes or product change notices that may affect sourcing.

Selection Notes

Select this component when a fixed 1 mA current regulation is required without complex biasing networks. Ensure the circuit voltage does not exceed the 1.35 V limiting threshold. Verify that the 0.5 W power dissipation rating accommodates the thermal conditions of the application environment.

Part Context

This component belongs to the category of current regulator diodes, distinct from standard Zener or rectifier diodes. It serves as a simple two-terminal solution for maintaining steady current flow. The DO-7 package offers a compact form factor suitable for through-hole mounting on printed circuit boards.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.