JAN1N5291UR-1

Current Regulation - Diodes, Transistors Overview

The JAN1N5291UR-1 is a current regulator diode manufactured by Microchip Technology, designed for surface-mount applications. It operates within the DO-213AB-2 package and provides a regulated current of 616 µA with a maximum voltage rating of 100 V and power dissipation of 500 mW. Qualified per MIL-PRF-19500/463 standards, this component features high source impedance and an internal metallurgical bond connection. The device supports an operating temperature range from -65 °C to +175 °C, ensuring reliability in demanding environments.

Current Regulation - Diodes, Transistors Feature Summary

• High source impedance for stable current regulation across broad voltage ranges
• Internal metallurgical bond connection for enhanced structural integrity
• Qualified per MIL-PRF-19500/463 standards for military-grade reliability

Current Regulation - Diodes, Transistors Applications

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

Current Regulation - Diodes, Transistors Procurement Notes

Verify the specific qualification level (JAN) against project requirements before procurement. Confirm that the DO-213AB-2 package dimensions align with the PCB footprint design. Ensure thermal management strategies account for the 500 mW power dissipation capability at elevated ambient temperatures up to 175 °C.

Current Regulation - Diodes, Transistors Selection Notes

Select this component when a fixed current value near 616 µA is required in a compact surface-mount form factor. Compare against through-hole equivalents like the 1N5291 if leaded mounting is preferred. Consider the 10% tolerance standard for current accuracy when designing circuit margins.

Current Regulation - Diodes, Transistors Part Context

This part belongs to the 1N5283-1 thru 1N5314-1 series of 0.5 watt current regulators. It serves as the surface-mount counterpart to axial-leaded versions, offering similar functionality in the DO-213AB MELF package. The series covers a wide range of currents from 0.22 mA to 4.7 mA.

Current Regulation - Diodes, Transistors Replacement Considerations

Direct functional substitutes include other parts from the 1N5283-1 to 1N5314-1 series with matching current ratings. Surface-mount alternatives may include commercial grade variants if military qualification is not strictly required, provided electrical parameters remain compatible.