JANS1N5287UR-1

Current Regulation - Diodes, Transistors Overview

The JANS1N5287UR-1 is a current regulator diode manufactured by Microchip Technology, designed for high-reliability applications. It operates within the 1N5283-1 through 1N5314-1 series and provides a regulated current of 363 µA with a maximum voltage rating of 100 V. The device features a power dissipation capacity of 500 mW and utilizes a DO-213AB-2 surface-mount package. Qualified under MIL-PRF-19500/463, it supports an operating temperature range from -65°C to +175°C. This component serves as a counterpart to Zener diodes, regulating current over a broad voltage range rather than voltage over a broad current range.

Current Regulation - Diodes, Transistors Feature Summary

• Provides stable current regulation across a wide voltage differential.
• Qualified for military standards ensuring high reliability in harsh environments.
• Features high source impedance for effective current limiting.

Current Regulation - Diodes, Transistors Applications

• Military aerospace electronic systems requiring radiation-hardened or high-reliability components.
• Precision current limiting circuits in defense instrumentation.
• Constant current sources for sensor biasing in extreme temperature environments.

Current Regulation - Diodes, Transistors Procurement Notes

Verify that the specific suffix UR-1 corresponds to the required surface-mount MELF package configuration and ensure compliance with the MIL-PRF-19500/463 qualification level. Confirm RoHS status and lead times directly with the manufacturer or authorized distributors, as military-grade parts often have extended production cycles. Validate part authenticity through official traceability documentation.

Current Regulation - Diodes, Transistors Selection Notes

Select this component when a constant current source is required instead of a voltage reference. Ensure the circuit design accommodates the 100 V maximum voltage rating and 500 mW power dissipation limits. Verify that the surface-mount DO-213AB-2 footprint matches the PCB layout requirements. Consider the -65°C to +175°C operating range for environmental suitability.

Current Regulation - Diodes, Transistors Part Context

This device belongs to the 1N5283-1 through 1N5314-1 series of current regulator diodes. The 'JANS' prefix indicates a specific military qualification level, distinct from commercial or lower-tier military variants like JAN or JANTX. These devices are engineered to offer current regulation capabilities similar to how Zener diodes offer voltage regulation, but within axial or round-end packages.

Current Regulation - Diodes, Transistors Replacement Considerations

Direct substitutes include other JANS-qualified parts from the same series, such as JANS1N5286UR-1 or JANS1N5288UR-1, provided the current rating matches the application needs. Commercial equivalents like CD5287 may be considered if military qualification is not strictly required, though performance and reliability specifications will differ.