The **L2CE-5J-R** is a specific part number belonging to the **LUMILEDS LUXEON CoB (Chip on Board) Core Range**. This electronic component is a high-power LED array designed for lighting applications that require high lumen density and efficacy. --- ## Technical Specifications The following table outlines the primary electrical and optical characteristics typical for this specific series: | Characteristic | Specification (Typical) | | :--- | :--- | | **Manufacturer** | Lumileds | | **Series** | LUXEON CoB Core Range (Gen 2/3) | | **Configuration** | Chip on Board (CoB) | | **Color Temperature (CCT)** | 5000K (indicated by the '5') | | **Color Rendering Index (CRI)** | 70 or 80 (varies by sub-bin) | | **Forward Voltage ($V_f$)** | ~34V to 36V | | **Forward Current ($I_f$)** | ~450mA (nominal) | | **Light Emitting Surface (LES)** | 9mm to 13mm (depending on package size) | --- ## Key Component Features ### 1. Chip on Board (CoB) Technology Unlike standard SMD (Surface Mount Device) LEDs, the CoB architecture mounts multiple LED chips directly onto a substrate to create a single module. This results in: * **Higher Lumen Density:** More light from a smaller surface area. * **Improved Thermal Management:** The ceramic or metal substrate dissipates heat more efficiently than plastic packages. * **Uniform Light:** Reduces the "multi-shadow" effect seen in discrete LED arrays. ### 2. Optical Performance The "5J" in the part number typically refers to the **5000K Cool White** spectrum. These parts are engineered for "Hot-Targeting," meaning the color remains stable at actual operating temperatures (usually 85°C) rather than just at room temperature testing. ### 3. Mechanical Construction * **Substrate:** Usually high-reflectivity aluminum or ceramic. * **Encapsulation:** Silicone resin mixed with phosphor. * **Solder Pads:** Large gold-plated pads for easy wire bonding or use with "poke-in" LED holders (connectors). --- ## Application Use Cases Because of its high intensity and directional light output, the L2CE-5J-R is commonly used in: * **Commercial Downlights:** Recessed ceiling lights for offices or retail. * **High Bay Lighting:** Industrial lighting for warehouses. * **Street Lighting:** High-efficiency outdoor illumination. * **Spotlights:** Track lighting for galleries or storefronts. ---