AA4040SYSK

Overview

The AA4040SYSK is a single-color surface-mount LED manufactured by Kingbright, featuring a yellow emission with a peak wavelength of 590 nm. It utilizes a PLCC-2 package configuration with dimensions of 4.00 mm in length, 3.60 mm in width, and a maximum height of 4.00 mm. The component operates at a forward current of 20 mA with a typical forward voltage of 2 V. It exhibits a viewing angle of 120 degrees and delivers a luminous intensity of 250 mcd. The lens is colorless with a water-clear transparency and a round shape with a flat top.

Feature Summary

• Yellow light emission optimized for standard indicator applications
• Water-clear lens design ensures high light transmission efficiency
• RoHS3 compliant construction supports environmentally conscious manufacturing

Applications

• General purpose electronic equipment status indication
• Control panel signal indicators
• Consumer appliance operational feedback

Procurement Notes

Verify the specific suffix designation against the manufacturer datasheet to confirm exact binning and optical characteristics. Ensure compatibility with automated pick-and-place equipment due to the SMD form factor. Confirm moisture sensitivity level handling procedures during storage and reflow soldering processes to maintain component integrity.

Selection Notes

Select this component when a standard yellow indicator with moderate brightness is required for surface-mount assembly. Consider the 120-degree viewing angle for visibility requirements. Evaluate thermal management needs as the power rating is limited. Compare against other colors in the AA4040 series if different visual signaling is necessary.

Part Context

This part belongs to the AA4040 series of single-color LEDs from Kingbright. The series offers various color options including red, green, blue, and orange within the same physical footprint. This specific model provides yellow output suitable for general signaling tasks where distinct color coding is essential for user interface clarity.

Replacement Considerations

KA-4040SYSK is an alias for this part number. Verify pinout compatibility and mechanical dimensions before substituting with generic equivalents.