1N5297 BK PBFREE

Overview

The Central Semiconductor Corp 1N5297 BK PBFREE is a silicon current regulator diode housed in a DO-7 glass axial package. It provides a stable regulated current of 1 mA with a maximum limiting voltage of 1.35 V. The device supports a maximum power dissipation of 0.5 W and operates within a junction temperature range of -65°C to +150°C. Designed for single configuration surface or through-hole mounting, it ensures consistent current flow across varying load conditions.

Feature Summary

• Maintains constant current output regardless of input voltage fluctuations within specified limits
• Utilizes robust glass encapsulation for environmental protection and thermal stability
• Provides precise current regulation without requiring external feedback components

Applications

• Biasing circuits for transistors and operational amplifiers
• LED current stabilization in low-power indicator applications
• Constant current sources for sensor excitation

Procurement Notes

Verify the specific suffix designation against the manufacturer's latest documentation to confirm compliance with RoHS directives and lead-free manufacturing standards. Confirm that the DO-7 axial package dimensions align with the target PCB footprint requirements before finalizing procurement orders.

Selection Notes

Select this component when a fixed 1 mA regulation is required with minimal circuit complexity. Ensure the supply voltage allows for at least the 1.35 V limiting voltage drop plus the load voltage. Verify that the total power dissipation does not exceed the 0.5 W rating under worst-case operating temperatures.

Part Context

This part belongs to the standard 1N52xx series of current regulator diodes manufactured by Central Semiconductor. It serves as a discrete alternative to more complex active current sources, offering a cost-effective solution for simple constant current applications in industrial and consumer electronics.

Replacement Considerations

Direct replacements must match the 1 mA regulation current, 1.35 V limiting voltage, and DO-7 package. Verify pinout compatibility and thermal characteristics if substituting with parts from other manufacturers.