1N5304-1

Overview

The JANTXV1N5304-1 is a silicon current regulator diode from the MIL-PRF-19500/463 qualified series, manufactured by Microchip Technology. It provides a regulated current of 1.8 mA with a maximum limiting voltage of 1.75 V and a peak operating voltage of 100 V. The device features a 0.5 W power dissipation rating and operates within a temperature range of -65°C to +175°C. Packaged in the axial DO-7 (DO-204AA) through-hole format, it serves as a constant current source alternative to Zener diodes.

Feature Summary

• Military-grade qualification per MIL-PRF-19500/463 standards for high-reliability applications
• Constant current regulation over a broad voltage range using axial-leaded packaging
• Extended thermal performance suitable for extreme environmental conditions

Applications

• Current limiting circuits in aerospace and defense systems
• Biasing elements for transistor amplifiers requiring stable DC current
• Protection circuits against overcurrent conditions in sensitive electronics

Procurement Notes

Verify the specific suffix designation when ordering, as military variants like JANTXV differ from commercial equivalents in reliability testing and lot traceability. Confirm that the required tolerance and leakage specifications align with the JANTXV grade requirements. Ensure the procurement channel supports the necessary documentation for defense or space-grade components.

Selection Notes

Select this component when a fixed current source is needed across varying voltage drops rather than voltage regulation. Compare the 1.8 mA set point against other series members like the 1N5303 or 1N5305 if different current levels are required. Ensure the circuit design accommodates the 100 V maximum voltage limit and the 1.75 V minimum drop-out voltage for proper regulation.

Part Context

This part belongs to the popular 1N5283-1 through 1N5314-1 series of 0.5 W current regulators. The series offers a selection of currents ranging from 0.22 mA to 4.7 mA in standard 10% tolerances. These devices function as counterparts to Zener diodes, regulating current instead of voltage while maintaining similar physical package dimensions.

Replacement Considerations

Commercial equivalents such as the 1N5304 may be considered if military qualification is not required. Verify that substitute parts meet the same 1.8 mA current regulation and 100 V voltage ratings. Check for compatibility in the DO-7 package and ensure the replacement supports the required operating temperature range.