1N5304

Overview

The JANTX1N5304-1/TR is a silicon current regulator diode manufactured by Microchip Technology. It provides a regulated current of 1.98 mA with a maximum limiting voltage of 1.75 V and a peak operating voltage of 100 V. The device dissipates up to 475 mW and operates within a temperature range of -55 °C to +175 °C. It features a minimum dynamic impedance of 420 µΩ and is housed in a DO-7-2 through-hole package.

Feature Summary

• Provides stable current regulation over a broad voltage range
• Utilizes axial-leaded DO-7 packaging for through-hole mounting
• Qualified per MIL-PRF-19500/463 standards

Applications

• Current limiting circuits
• Biasing networks for active components
• Replacement for Zener diodes in constant current applications

Procurement Notes

Verify the specific ordering suffix, such as TR for tape and reel or bulk packaging, against project requirements. Confirm that the JANTX qualification level meets the necessary environmental and reliability standards for the intended deployment environment before finalizing procurement.

Selection Notes

Select this component when a precise current value near 1.98 mA is required. Ensure the circuit design accommodates the 100 V maximum peak operating voltage and the 475 mW power dissipation limit. Verify that the DO-7 package dimensions fit the available board space and thermal constraints.

Part Context

This part belongs to the 1N5283-1 through 1N5314-1 series of 0.5 W current regulators. These devices offer standard 10% tolerance currents ranging from 0.22 mA to 4.7 mA. They serve as counterparts to Zener diodes, regulating current rather than voltage, while maintaining similar physical form factors.

Replacement Considerations

Direct substitutes include other parts within the 1N5304 series from qualified manufacturers. Verify that any replacement matches the 1.98 mA current rating, 100 V voltage limit, and DO-7 package type to ensure mechanical and electrical compatibility.