1N5309-1

Overview

The Microchip Technology 1N5309-1 is a current regulator diode designed for stable constant-current applications. It operates with a maximum voltage of 100V and provides a regulated current of 3.3mA at a power dissipation of 500mW. The device utilizes a DO-7 axial through-hole package, suitable for robust circuit integration. It features a wide operating temperature range from -65°C to 175°C (TJ), ensuring reliability in demanding environments. The component is classified under Diodes & Rectifiers and is manufactured by Microchip / Microsemi.

Feature Summary

• Provides constant current regulation for sensitive electronic circuits
• Operates reliably across an extended industrial temperature range
• Utilizes a standard axial leaded package for through-hole mounting

Applications

• Constant current sources for LED driving
• Biasing elements in transistor amplifier circuits
• Current limiting protection in series resistor networks

Procurement Notes

Verify the specific suffix designation when ordering, as it may indicate packaging or qualification variations distinct from the base part number. Confirm RoHS compliance status directly with the manufacturer, as indicated by available documentation. Ensure the procurement channel sources genuine Microchip products to guarantee performance specifications and long-term availability for production cycles.

Selection Notes

Select this component when a fixed current sink is required independent of voltage fluctuations within the specified limits. The 3.3mA output is suitable for low-power signal conditioning. Consider the DO-7 package dimensions for PCB layout constraints. Verify that the load voltage does not exceed the 100V maximum rating to prevent device breakdown during operation.

Part Context

The 1N5309-1 belongs to the broader 1N5309 series of current regulator diodes produced by Microchip. This series offers various current ratings tailored for different biasing needs. The -1 suffix typically denotes specific manufacturing or packaging attributes defined by the original military or commercial standards inherited from the Microsemi lineage.

Replacement Considerations

Direct substitutes include other 1N5309 variants with identical electrical characteristics. Cross-reference with JANTX1N5309-1 for qualified versions. Ensure any replacement matches the 3.3mA current rating and DO-7 package form factor for mechanical compatibility.