C503B-AAS-CY0B0251

Overview

The C503B-AAS-CY0B0251 is a single-color amber LED from the Cree LED C503B series, designed for through-hole mounting in a T-1 3/4 (5 mm) package. It features a round lens with a domed top and emits at a dominant wavelength of 591 nm. Key electrical parameters include a forward voltage of 2.1 V at a forward current of 20 mA, with a power rating of 130 mW. The component delivers a luminous intensity of 15,000 mcd and offers a viewing angle of 15 degrees. It operates within a temperature range of -40 °C to +100 °C.

Feature Summary

• Utilizes advanced optical-grade epoxy encapsulation for superior high-temperature and high-moisture resistance.
• Contains UV inhibitors in the resin to minimize degradation from direct sunlight exposure.
• Provides stable light output over the operational life of the LED.
• Offers superior light output suitable for excellent readability in outdoor environments.

Applications

• Electronic Signs & Signals (ESS)
• Motorway Signs
• Variable-Message Sign (VMS)
• Advertising Signs
• Petrol Signs

Procurement Notes

Verify the lifecycle status before procurement, as this specific part number may be marked as Not Recommended for New Designs (NRND) or discontinued in certain regions. Confirm RoHS compliance details directly with the manufacturer or authorized distributors. Ensure that the 15-degree viewing angle and 15,000 mcd intensity meet the specific optical requirements of the target application. Check for regional shipping restrictions or availability constraints associated with older product lines.

Selection Notes

Select this component when a narrow 15-degree beam angle and high luminous intensity are required for long-distance visibility. The 5 mm through-hole form factor is suitable for legacy PCB designs or applications where surface-mount options are not feasible. Consider the operating temperature range of -40 °C to +100 °C for harsh environmental conditions. Compare against other C503B variants if a wider viewing angle or different intensity level is acceptable for the design.

Part Context

This component belongs to the Cree LED C503B family of 5-mm Red and Amber Round LEDs. The family includes variants with different viewing angles (15, 23, and 30 degrees) and intensity levels. The 'AAS' designation typically indicates an amber color with a 15-degree viewing angle. These LEDs are engineered for outdoor sign and signal applications requiring durability and consistent performance under UV exposure.

Replacement Considerations

Check for updated part numbers within the same C503B series that may have replaced this NRND item. Verify mechanical compatibility with existing 5 mm through-hole footprints. Ensure that any substitute maintains the 15-degree viewing angle and similar luminous intensity specifications to preserve optical performance in the final assembly.