### Overview of C5SME-RJS-CS0U0BB1 The **C5SME-RJS-CS0U0BB1** is a high-brightness, through-hole Red LED manufactured by **Cree LED** (formerly Wolfspeed/Cree). It belongs to the **Screen Master®** series, specifically designed for outdoor video screens and signage applications. --- ### Technical Specifications The following table outlines the key electronic and optical characteristics of the component: | Parameter | Specification | | :--- | :--- | | **Color** | Red | | **Dominant Wavelength** | 619 nm - 624 nm | | **Luminous Intensity** | 770 mcd (min) - 2130 mcd (max) | | **Viewing Angle** | 110° Horizontal / 50° Vertical (Oval) | | **Forward Current ($I_F$)** | 50 mA (Absolute Max) | | **Forward Voltage ($V_F$)** | 2.1V (Typical) / 2.6V (Max) | | **Lens Appearance** | Tinted, Diffused | | **Mounting Type** | Through-Hole (Radial) | --- ### Key Features and Construction * **Oval Spatial Pattern:** Unlike standard round LEDs, this part has an oval viewing angle. This is intentional for outdoor displays to ensure wide visibility for pedestrians and drivers (horizontal) while minimizing light waste towards the sky (vertical). * **Material Composition:** It utilizes **AlGaInP** (Aluminium Gallium Indium Phosphide) technology on a lead frame, which is standard for high-efficiency red LEDs. * **UV Resistance:** The epoxy resin used in the lens is specially formulated with UV inhibitors to prevent yellowing or degradation when exposed to direct sunlight for long periods. * **Standoff Options:** The "S" in the part number often indicates the inclusion of "standoffs" on the leads, which helps in maintaining a specific height during the PCB soldering process and allows for better cleaning. --- ### Part Number Breakdown Understanding the nomenclature helps in identifying specific bins: 1. **C5SME**: Series Code (High Brightness 5mm Oval LED). 2. **RJS**: Color Code (Red, 621nm nominal). 3. **CS0U0BB1**: The Binning code, which specifies: * **S0/U0**: The Luminous Intensity range. * **B1**: The color/wavelength bin. --- ### Applications * **Electronic Passenger Information Signs:** Bus stops, train stations, and airports. * **Full-Color Outdoor Video Screens:** Large-scale billboards (Jumbotrons). * **Traffic Signals:** Directional arrows and warning lights. * **Commercial Signage:** Gas station price signs and retail displays.