JAN1N5287UR-1/TR

Current Regulation - Diodes, Transistors Overview

The JAN1N5287UR-1/TR is a current regulator diode manufactured by Microchip Technology, designed for surface-mount applications. It operates within the MIL-PRF-19500/463 qualified series, providing stable current regulation over a broad voltage range. The device features a round-end SMT package (DO-213AB-2) and supports a maximum peak working voltage of 100V. Key electrical parameters include a regulated current of 363µA, a maximum limit voltage of 1.05V, and a power dissipation rating of 500mW. It functions as a counterpart to Zener diodes, regulating current rather than voltage, and is suitable for environments ranging from -65°C to +175°C.

Current Regulation - Diodes, Transistors Feature Summary

• Provides constant current regulation across a wide voltage span, serving as an alternative to voltage-regulating Zener diodes in similar form factors.
• Features high source impedance characteristics to maintain stable current output despite variations in supply voltage or load conditions.
• Qualified under military standards (MIL-PRF-19500/463), ensuring reliability and performance consistency for rugged electronic applications.

Current Regulation - Diodes, Transistors Applications

• Constant current sources for LED driving circuits requiring stable illumination levels.
• Biasing elements for transistor amplifiers and active circuit components.
• Current limiting protection in sensitive analog signal processing paths.

Current Regulation - Diodes, Transistors Procurement Notes

Verify the specific suffix UR-1/TR against the official Microchip datasheet to confirm the tape-and-reel packaging configuration and exact electrical tolerances. Ensure that the JAN qualification level meets the environmental and reliability requirements of the target system, as commercial variants may differ in testing protocols.

Current Regulation - Diodes, Transistors Selection Notes

Select this component when a surface-mount solution is required for precise current regulation with military-grade reliability. Compare the 363µA regulated current against the circuit's biasing needs. Consider the DO-213AB-2 footprint constraints and verify thermal management capabilities given the 500mW power dissipation rating at elevated temperatures up to 175°C.

Current Regulation - Diodes, Transistors Part Context

This part belongs to the popular 1N5283-1 through 1N5314-1 series of 0.5-watt current regulators. These devices offer a selection of currents from 0.22 mA to 4.7 mA in standard 10% tolerances. The series is JEDEC registered and provides a robust option for current limiting in axial-leaded or surface-mount packages, complementing Microchip's broader portfolio of Zener and voltage regulation products.

Current Regulation - Diodes, Transistors Replacement Considerations

Direct substitutes within the same family include JAN1N5286UR-1/TR and JAN1N5288UR-1/TR, provided their respective regulated currents match the design requirements. Verify pinout compatibility and thermal characteristics before substitution.