The **C503C** series refers to a family of high-brightness, round LED components manufactured by **Cree LED** (now part of SGH). These are standard through-hole LEDs widely used in signage, outdoor displays, and decorative lighting. --- ## 1. Core Technical Specifications The C503C family includes various colors, but they generally share the following physical and electrical characteristics: | Parameter | Specification | | :--- | :--- | | **Package Size** | 5mm (T-1 3/4) | | **Type** | Through-hole | | **Lens Shape** | Round (available in Clear or Diffused) | | **Forward Current** | 20mA - 30mA (Typical) | | **Viewing Angle** | 15°, 30°, or 40° (depending on specific model) | | **Intensity** | High Luminous Intensity (mcd) | --- ## 2. Common Model Variations The "C503C" prefix is followed by letters indicating the color and radiation pattern. ### Color Spectrum * **C503C-WAS/WAN:** White (Cool/Warm) * **C503C-RCS:** Red * **C503C-BCS:** Blue * **C503C-GCS:** Green * **C503C-ACS:** Amber/Yellow ### Electrical Properties by Color | Color | Forward Voltage ($V_F$) | Typical Wavelength | | :--- | :--- | :--- | | **Red / Amber** | 2.1V | 624nm / 591nm | | **Blue / Green** | 3.2V - 3.4V | 470nm / 527nm | | **White** | 3.2V | X/Y Coordinates | --- ## 3. Key Features * **High Reliability:** Designed with optical-grade epoxy that offers superior resistance to high temperatures and humidity. * **UV Resistance:** The lens material is often treated to prevent yellowing when exposed to direct sunlight (crucial for outdoor signs). * **Consistency:** Cree uses a rigorous "binning" process to ensure that LEDs from the same batch have nearly identical color and brightness. --- ## 4. Typical Applications * **Electronic Signs:** Variable Message Signs (VMS) and advertising billboards. * **Status Indicators:** Power lights on industrial machinery. * **Automotive:** Interior lighting or dashboard indicators. * **Consumer Electronics:** Backlighting for buttons or decorative accents. ---