1N5283UR-1/TR

Overview

The Microchip Technology 1N5283UR-1/TR is a surface-mount current regulator diode housed in the DO-213AB (MELF, LL41) package. It provides a nominal regulating current of 0.22 mA with standard tolerances ranging from 0.198 mA to 0.242 mA. The device operates over a broad voltage range up to a maximum working peak voltage of 100 V and dissipates up to 500 mW of power. It features high source impedance and an internal metallurgical bond for reliability.

Feature Summary

• JEDEC registered surface mount equivalent of the axial-leaded 1N5283 series
• Double-plug internal bond connection with large die element
• Inherently radiation hard design
• High source impedance for stable regulation

Applications

• Current limiting circuits requiring broad operating voltage ranges
• Temperature-compensated Zener reference circuits
• Biasing networks for semiconductor devices
• Constant current sources for low-power analog applications

Procurement Notes

Verify that the ordering suffix /TR indicates tape and reel packaging as specified by the manufacturer. Confirm the specific qualification level required for the application, as JAN, JANTX, JANTXV, and JANS variants are available under MIL-PRF-19500/463 standards. Ensure compatibility with RoHS compliance requirements if applicable to the commercial grade versions.

Selection Notes

Select this component when a surface-mount solution is needed to replace axial-leaded current regulators. The 0.22 mA nominal current suits low-bias applications. Verify that the 100 V peak operating voltage meets circuit requirements. Consider the thermal resistance of 100 °C/W and derating factors above +125 °C for power dissipation calculations.

Part Context

This part belongs to the 1N5283UR-1 through 1N5314UR-1 series of 0.5 watt current regulators. It serves as the surface-mount counterpart to the popular 1N5283-1 through 1N5314-1 axial-leaded series. The DO-213AB package allows for automated assembly while maintaining the performance characteristics of the larger axial packages.

Replacement Considerations

Direct functional replacements include the axial-leaded 1N5283-1, though package differences require layout changes. Surface-mount equivalents from other manufacturers may be considered if electrical parameters match, but radiation hardness and metallurgical bond construction are unique to this Microchip series.