1N5293-1

Overview

The Microchip Technology 1N5293-1 is a current regulator diode designed for through-hole mounting in the DO-7 axial leaded package. It provides a regulated current of 748 µA with a maximum voltage rating of 100 V and a power dissipation capacity of 500 mW. The device operates within an extended temperature range from -55 °C to +175 °C, ensuring stability under varying thermal conditions. This component serves as a constant current source counterpart to Zener diodes, maintaining stable current over a broad voltage range.

Feature Summary

• Provides constant current regulation across a wide operating voltage range
• Features robust DO-7 axial leaded packaging for reliable through-hole integration
• Supports high-temperature operation up to 175 °C for demanding environments

Applications

• Constant current sources for LED biasing circuits
• Current limiting protection in electronic systems
• Biasing elements for transistor amplifier stages

Procurement Notes

Verify the specific suffix designation against official datasheets to confirm tolerance and qualification levels. Ensure the procurement channel sources components directly from authorized distributors or the manufacturer to guarantee authenticity and traceability. Cross-reference the part number with the latest product change notifications to account for any manufacturing updates.

Selection Notes

Select this component when a fixed current value near 748 µA is required without complex circuitry. Consider the 100 V maximum voltage limit and 500 mW power dissipation capability during thermal design. Evaluate the DO-7 package dimensions for PCB layout compatibility and verify that the operating temperature range meets the application's environmental requirements.

Part Context

The 1N5293-1 belongs to the 1N5283-1 through 1N5314-1 series of 0.5 W current regulators manufactured by Microchip Technology. This series offers a selection of currents ranging from 0.22 mA to 4.7 mA in standard tolerances. These devices are functionally similar to Zener diodes but regulate current instead of voltage, providing a versatile solution for constant current applications in compact axial packages.