1N5286UR-1/TR

Overview

The JAN1N5286UR-1 is a current regulator diode manufactured by Microchip Technology in the DO-213AB (MELF, LL41) surface-mount package. It provides a nominal regulator current of 0.30 mA with a tolerance range of 0.270 mA to 0.330 mA at a regulator voltage of 25 V. The device features a maximum limiting voltage of 1.00 V and a peak operating voltage of 100 V. Electrical characteristics include a minimum regulator impedance of 9.000 MΩ and a minimum knee impedance of 1.600 MΩ. It operates within a junction temperature range of -65 °C to +150 °C and supports steady-state power dissipation up to 500 mW.

Feature Summary

• JEDEC registered surface mount equivalent of the 1N5283 through 1N5314 series
• High source impedance for stable current regulation
• Internal metallurgical bond construction
• JAN, JANTX, JANTXV, and JANS qualifications available per MIL-PRF-19500/463

Applications

• Current regulation over broad operating voltage ranges
• Counterpart offering to Zener diodes for constant current applications
• Power electronics control loop development
• Characterization of power semiconductors

Procurement Notes

Verify that the ordering suffix UR-1 corresponds to the tape and reel packaging format rather than bulk supply. Confirm the specific qualification level required, as military grades such as JAN or JANTX are available but distinct from commercial versions. Ensure compliance with RoHS requirements if applicable, noting that compliant versions are restricted to commercial grade only. Validate the hermetically sealed glass case specifications against environmental constraints.

Selection Notes

Select this component when a precise constant current source is needed across a wide voltage span. The DO-213AB package suits automated surface-mount assembly processes. Consider the high source impedance for improved regulation stability. Verify thermal resistance parameters if operating near the maximum power dissipation limit. Compare regulator current tolerances against circuit requirements to ensure adequate margin.

Part Context

This device belongs to the 1N5283UR-1 through 1N5314UR-1 family of 0.5 watt current regulators. It serves as the surface-mount counterpart to the axial-leaded 1N5283-1 through 1N5314-1 series. The product line offers a selection of currents ranging from 0.22 mA to 10.0 mA in standard 10% tolerances. It functions similarly to Zener diodes but regulates current instead of voltage.

Replacement Considerations

The 1N5286-1 is the axial-leaded equivalent in the DO-7 package. Other members of the 1N5283-1 to 1N5314-1 series provide different current ratings.