JANTXV1N5289UR-1/TR

Overview

The JANTXV1N5289UR-1/TR is a current regulator diode manufactured by Microchip Technology, designed for surface-mount applications in the DO-213AB (MELF) package. It provides a regulated current of 473 µA with a maximum voltage rating of 100 V and a power dissipation capacity of 500 mW. The device operates within an extended temperature range from -65 °C to +175 °C junction temperature. This component belongs to the MIL-PRF-19500/463 military series and is supplied in tape-and-reel packaging.

Feature Summary

• Provides stable current regulation suitable for precision analog circuits
• Constructed with round-end MELF glass encapsulation for robustness
• Qualified for high-temperature operation up to 175 °C junction temperature

Applications

• Military aerospace electronic systems requiring radiation-hardened or high-reliability components
• Precision constant current sources for sensor biasing
• Temperature-compensated reference circuits in harsh environments

Procurement Notes

Verify the specific suffix UR-1/TR against official Microchip documentation to confirm the tape-and-reel packaging format and exact electrical tolerances. Ensure that the MIL-PRF-19500/463 qualification level meets project requirements before procurement. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components.

Selection Notes

Select this component when a surface-mount current regulator with high thermal stability is required. Compare the 473 µA regulation point against circuit load requirements. Consider the DO-213AB footprint constraints during PCB layout. Verify that the 100 V breakdown voltage exceeds the maximum expected reverse voltage in the application.

Part Context

This part is part of the 1N5289 series of current regulator diodes produced under military specifications. It shares functional characteristics with other devices in the MIL-PRF-19500/463 family but differs in package type and regulatory compliance. The UR-1 designation typically indicates a specific variant within the Microchip/Microsemi product line.

Replacement Considerations

Direct substitutes include JAN1N5289UR-1 and JANTX1N5289UR-1, which share similar electrical parameters but may differ in quality assurance levels. Commercial equivalents like the 1N5289/TR exist but lack military qualification. Verify pinout compatibility and thermal performance before substitution.