The **C4SME-RJS-CS0U0BB2** is a high-brightness, through-hole LED manufactured by **Cree LED** (formerly Wolfspeed/Cree). It is specifically designed for outdoor applications such as video screens, billboards, and variable-message signs. --- ### 1. Key Technical Specifications The following table summarizes the primary electrical and optical characteristics of this component: | Parameter | Specification | | :--- | :--- | | **Color** | Red | | **Dominant Wavelength** | 621 nm - 627 nm | | **Luminous Intensity** | 770 mcd - 2130 mcd | | **Viewing Angle** | 115° (Horizontal) / 55° (Vertical) | | **Forward Current ($I_F$)** | 50 mA (Maximum) | | **Forward Voltage ($V_F$)** | 2.1 V (Typical) | | **Lens Type** | Tinted, Diffused, Oval shape | | **Mounting Type** | Through-Hole (Radial) | --- ### 2. Functional Features * **Oval Shape:** The LED features an oval lens geometry. This is engineered to provide a wide horizontal viewing angle (115°) and a narrower vertical angle (55°), which is ideal for outdoor signs where the audience is usually spread out horizontally but positioned at a similar height relative to the screen. * **High Brightness:** Utilizing AllnGaP (Aluminum Indium Gallium Phosphide) material technology, it provides high light output with low power consumption. * **UV Resistance:** The epoxy resin used in the lens contains UV inhibitors to prevent yellowing or degradation when exposed to direct sunlight for long periods. * **Standoff Options:** This specific part number includes "leads with standoffs" to ensure consistent height and airflow during PCB assembly. --- ### 3. Application Use Cases The C4SME series is primarily found in: 1. **Electronic Signs (ESS):** Full-color outdoor video displays. 2. **Commercial Billboards:** Large-scale digital advertising. 3. **Passenger Information:** Destination signs on buses or trains. 4. **Traffic Signals:** Highway message boards and crossing signals. --- ### 4. Part Number Breakdown To understand the specific binning of this part, the suffix `CS0U0BB2` indicates: * **C4SME:** Series name (Oval 4mm LED). * **RJS:** Color code (Red). * **CS0U0:** Intensity bin (specifying the minimum and maximum brightness range). * **BB2:** Color bin (specifying the exact nanometer range for the red hue).