1N5294-1

Overview

The Microchip Technology 1N5294-1 is a current regulator diode designed for through-hole mounting in the DO-7 (DO-204AA) axial leaded package. It provides a regulated current of 825 µA with a maximum peak operating voltage of 100 V and a maximum power dissipation of 475 mW. The device operates within an extended temperature range from -55°C to +175°C. This component belongs to the 1N5283-1 through 1N5314-1 series, which offers standard 10% tolerance options for precise current regulation applications.

Feature Summary

• Provides stable current regulation over a broad voltage range
• Features double-plug internal bond connection for enhanced reliability
• Utilizes larger active die element for unique current limiting function

Applications

• Constant current sources for LED biasing
• Current limiting protection circuits
• Biasing elements for transistor stages

Procurement Notes

Verify the specific suffix '-1' indicates qualification per MIL-PRF-19500/463 standards when sourcing. Confirm the manufacturer documentation explicitly lists the 1N5294-1 part number within the 1N5283-1 to 1N5314-1 series datasheet to ensure correct regulatory compliance and performance specifications are met for the intended application.

Selection Notes

Select this component when a fixed current of 825 µA is required across varying voltage loads up to 100 V. Ensure the circuit design accommodates the 475 mW power dissipation limit at the maximum operating temperature. Verify that the DO-7 package dimensions fit the PCB layout constraints and that the through-hole assembly process aligns with manufacturing capabilities.

Part Context

This part is part of the 1N5283-1 through 1N5314-1 series of 0.5 W current regulators. These devices serve as counterparts to Zener diodes by regulating current over a broad voltage range rather than voltage over a broad current range. The series includes various current values from 0.22 mA to 4.7 mA in standard 10% tolerances.

Replacement Considerations

Compatible substitutes include other parts from the 1N5283-1 to 1N5314-1 series with identical 825 µA ratings. Cross-reference with equivalent current regulator diodes from other manufacturers offering DO-7 packages and matching electrical parameters such as 100 V max voltage and similar power dissipation limits.