1N5300

Overview

The Microchip Technology 1N5300 is a current regulator diode designed for surface mount applications. It utilizes the DO-213AB MELF glass package, which provides a compact form factor suitable for automated assembly processes. The device operates within a military-grade series compliant with MIL-PRF-19500/463 standards, ensuring reliability in demanding environments. Key electrical specifications include a maximum voltage rating of 100V and a regulated current of 1.43mA. The component supports a power dissipation of 475mW and functions across an extended temperature range, making it appropriate for precision current limiting tasks.

Feature Summary

• Provides stable current regulation without requiring external resistors
• Constructed with a hermetically sealed glass MELF package for environmental protection
• Complies with military qualification standards for high-reliability applications

Applications

• Precision constant current sources for sensor biasing
• Current limiting protection in sensitive electronic circuits
• Biasing elements for LED arrays requiring stable drive currents

Procurement Notes

Verify the specific ordering suffix to confirm the exact package variant and qualification level, as suffixes may indicate differences in testing or packaging methods. Ensure that the procurement channel provides traceability documentation required for military-grade components. Confirm compliance with relevant export control classifications before finalizing acquisition.

Selection Notes

Select this component when a fixed current value of 1.43mA is required in a surface-mount design. Consider the 100V breakdown voltage limit when designing circuits with higher potential differentials. Evaluate the thermal management requirements based on the 475mW power dissipation capability and the thermal resistance characteristics of the DO-213AB package.

Part Context

The 1N5300 belongs to the 1N53xx series of current regulator diodes manufactured by Microchip Technology. This series offers various current ratings to suit different circuit needs while maintaining consistent voltage and package characteristics. The part is distinct from standard Zener diodes as it regulates current rather than voltage, providing a unique solution for constant current applications.

Replacement Considerations

Direct replacements must match the 1.43mA current rating, 100V voltage rating, and DO-213AB MELF package. Verify that any substitute component meets the same military qualification standards if used in critical applications.