1N5293

Overview

The Microchip Technology 1N5293 is a silicon current regulator diode designed to maintain a constant current over a wide voltage range. It features a regulated current of 0.68 mA and a maximum limiting voltage of 1.15 V. The device is available in the DO-7 axial leaded package with a power dissipation rating of 500 mW. Operating temperatures span from -55°C to +175°C, ensuring reliability in demanding environments.

Feature Summary

• Provides stable current regulation across a broad voltage spectrum
• Utilizes a robust DO-7 axial leaded package for through-hole mounting
• Engineered for high-temperature operation up to 175°C

Applications

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

Procurement Notes

Verify the specific ordering suffix to confirm the package type and qualification level. Ensure the selected variant matches the required tolerance and thermal specifications for the target application environment before finalizing procurement orders.

Selection Notes

Select this component when a fixed current source is required independent of supply voltage fluctuations. Compare the 0.68 mA regulation point against circuit requirements to ensure compatibility with downstream load impedance and voltage headroom constraints.

Part Context

This part belongs to the 1N5283-1 through 1N5314-1 series of 0.5-watt current regulators. These devices serve as counterparts to Zener diodes by regulating current rather than voltage, offering similar form factors but distinct functional characteristics for current control applications.

Replacement Considerations

Cross-reference with other manufacturers' current regulator diodes having identical 0.68 mA regulation and 1.15 V limit parameters. Verify pinout compatibility and thermal resistance values to ensure seamless integration into existing designs.