1N5290UR-1/TR

Overview

The Microchip Technology 1N5290UR-1/TR is a current regulator diode housed in a DO-213AB (MELF, LL41) surface-mount package. It provides a nominal regulator current of 0.47 mA with a tolerance range of 0.423 mA to 0.517 mA at a test voltage of 25 V. The device features a maximum limiting voltage of 1.05 V and supports a peak operating voltage of 100 V. It dissipates up to 500 mW of power and operates within a junction temperature range of -65 °C to +150 °C.

Feature Summary

• Double-plug internal bond construction for enhanced reliability
• Hermetically sealed glass case with leadless surface mount design
• High source impedance for stable current regulation
• Inherently radiation hard characteristics

Applications

• Current regulation over broad operating voltage ranges
• Temperature-compensated reference circuits
• Biasing networks for semiconductor devices

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm compliance status and packaging configuration. Ensure that the selected variant matches the required qualification level and terminal finish specifications for the intended application environment.

Selection Notes

Select this component based on the required nominal current value and the available peak operating voltage. Consider the thermal resistance and derating requirements when designing for high ambient temperatures or enclosed spaces.

Part Context

This part belongs to the 1N5283UR-1 through 1N5314UR-1 series of 0.5 watt current regulators. These devices serve as counterparts to Zener diodes by regulating current rather than voltage across a wide voltage span.

Replacement Considerations

The JAN1N5290-1/TR is a confirmed axial-leaded replacement option within the same electrical family.