1N5294UR-1

Overview

The JAN1N5294UR-1 is a current regulator diode manufactured by Microchip Technology, designed for surface-mount applications in the DO-213AB-2 package. It provides a regulated current of 825 µA with a maximum peak operating voltage of 100 V and a power dissipation rating of 475 mW. The device operates within a temperature range of -65 °C to +175 °C. This component belongs to the military-grade series compliant with MIL-PRF-19500/463 standards, ensuring reliability in demanding environments.

Feature Summary

• Provides stable constant current regulation without external components
• Capable of operation in extreme high-temperature environments up to 175 °C
• Utilizes a compact round-end SMT package for space-constrained designs

Applications

• Constant current sources for LED driving circuits
• Biasing elements for transistor amplifier stages
• Current limiting protection in sensitive electronic loads

Procurement Notes

Verify compliance requirements before procurement as this specific part number indicates non-RoHS status. Confirm that the DO-213AB-2 package dimensions align with the target PCB footprint. Ensure the supply chain can accommodate the extended production lead time associated with military-grade semiconductor manufacturing processes.

Selection Notes

Select this component when a fixed current sink or source is required in a surface-mount layout. Compare against through-hole alternatives like the 1N5291 if board space permits. Verify that the 100 V breakdown voltage exceeds the maximum potential drop across the load in the intended circuit configuration.

Part Context

This device is part of the broader 1N529x series of current regulator diodes produced by Microchip. It shares functional similarities with other members of the family but differs in specific current ratings and packaging options. The UR-1 suffix typically denotes a specific tape-and-reel or bulk variant within the military qualification spectrum.

Replacement Considerations

Direct substitutes include other 1N5294 variants from different manufacturers, provided they meet the same electrical specifications and package constraints. Cross-reference with JANTX1N5294UR-1 for equivalent performance levels.