1N5290UR-1E3/TR

Overview

The Microchip Technology 1N5290UR-1E3/TR is a surface mount current regulator diode housed in the DO-213AB (MELF) package. It provides a nominal regulating current of 0.47 mA with standard tolerances ranging from 0.423 mA to 0.517 mA at a test voltage of 25 V. The device features a peak operating voltage of 100 V and a maximum steady-state power dissipation of 500 mW. Electrical characteristics include a minimum regulator impedance of 2.7 MΩ and a maximum limiting voltage of 1.05 V. The component operates within a junction temperature range of -65 °C to +150 °C.

Feature Summary

• Surface mount equivalent of the 1N5283 through 1N5314 series
• Hermetically sealed glass case with internal metallurgical bond
• Double-plug construction for enhanced reliability
• Inherently radiation hard

Applications

• Current regulation over broad operating voltage ranges
• Temperature compensation circuits
• Biasing networks for semiconductor devices

Procurement Notes

Verify that the ordering suffix 'TR' corresponds to tape and reel packaging as specified by the manufacturer. Confirm RoHS compliance status, noting that lead-free versions are available for commercial grades only. Ensure the procurement documentation matches the specific part number to avoid confusion with non-suffix or military qualified variants.

Selection Notes

Select this component when a surface mount solution is required for current regulation applications. The DO-213AB package serves as the direct surface mount replacement for the axial-leaded 1N5290-1. Consider the 10% tolerance limits and the 100 V peak operating voltage when designing the circuit parameters.

Part Context

This device belongs to the 1N5283UR-1 through 1N5314UR-1 series of 0.5 watt current regulators. These components function as counterparts to Zener diodes by regulating current over a broad voltage range rather than voltage over a broad current range. The series offers an extensive selection of currents from 0.22 mA to 10.0 mA.

Replacement Considerations

The 1N5290-1 is the axial-leaded equivalent. Direct substitution requires accounting for the package difference between DO-213AB and DO-7.