1N5283

Overview

The Microchip Technology 1N5283 is a single current regulator diode designed for precision constant current applications. It operates in the DO-7 (DO-204AA) axial through-hole package. The device regulates a maximum current of 242 µA with a peak operating voltage of 100 V and a maximum limiting voltage of 1 V. It features a minimum dynamic impedance of 25 mΩ and a knee impedance of 2.75 mΩ. The component supports an extended temperature range from -55°C to +175°C and dissipates up to 500 mW.

Feature Summary

• Provides stable constant current regulation without external components
• Operates reliably across extreme industrial temperature ranges
• High voltage tolerance allows flexibility in circuit design

Applications

• Precision sensor biasing and excitation
• LED current limiting and stabilization
• Analog circuit reference current sources

Procurement Notes

Verify RoHS compliance status as documentation indicates non-compliance. Confirm package type matches DO-7 specifications. Ensure thermal management supports 500 mW dissipation at intended operating temperatures. Validate supplier authenticity for military-grade variants if required.

Selection Notes

Select based on required regulated current near 242 µA. Consider thermal derating for operation above ambient limits. Verify voltage headroom exceeds 1 V limiting drop. Compare against alternative JANS/JAN series parts for radiation hardness requirements.

Part Context

Part of the 1N5283-1/1N5314-1 family of current regulator diodes manufactured by Microchip Technology. Shares functional characteristics with similar axial glass-encapsulated devices but offers specific impedance and current tolerances defined in official datasheets.

Replacement Considerations

JAN1N5283-1/TR serves as a verified equivalent variant with identical electrical parameters. Cobham PLC JAN1N5283 provides comparable performance in DO-7 packaging.