The part number **OSMW50815GP-R5MAS1C1A-A** refers to a high-performance, surface-mount (SMD) **LED (Light Emitting Diode)** manufactured by **OptoSupply**. This component is part of their specialty high-power or high-brightness series, typically used in architectural lighting, signage, and general illumination. --- ### 1. Key Technical Specifications Based on the standard nomenclature for OptoSupply's high-power LED series: | Feature | Specification | | :--- | :--- | | **Component Type** | SMD LED (Surface Mount Device) | | **Color** | Warm White (approx. 2700K - 3500K) | | **Luminous Flux** | High Output (Typically 100-120 Lumens per Watt) | | **Viewing Angle** | 120° (Standard Lambertian distribution) | | **Forward Current** | 150mA - 350mA (Varies by thermal management) | | **Forward Voltage** | ~3.0V to 3.6V (Typical for White LEDs) | | **Mounting Style** | 5050 or similar footprint for heat dissipation | --- ### 2. Part Number Breakdown (Functional Logic) While proprietary codes vary, the string follows this general structure: * **OS**: Manufacturer (OptoSupply). * **MW**: Color Designation (Warm White). * **50815**: Physical dimensions and chip configuration (often 5.0mm x 5.0mm package). * **GP**: High-power / General Purpose efficiency grade. * **R5**: Color Rendering Index (CRI) rating (usually indicates CRI >80). * **MAS1C1A-A**: Specific binning code for Chromaticity (Color temperature precision) and Luminous Intensity. --- ### 3. Electronic Characteristics & Features * **Thermal Management:** These LEDs often feature a thermal pad on the bottom. Proper soldering to a Metal Core PCB (MCPCB) is required to prevent overheating. * **Internal Protection:** Many modern OptoSupply chips in this series include an **ESD Protection Diode** integrated into the package to prevent damage from static discharge. * **Phosphor Coating:** Uses a yellow phosphor coating over a blue InGaN (Indium Gallium Nitride) die to produce the warm white light. --- ### 4. Typical Applications 1. **Indoor Lighting:** LED bulbs, downlights, and strip lighting where "warm" ambiance is required. 2. **Outdoor Lighting:** Solar-powered garden lights and architectural wall washers. 3. **Backlighting:** Large scale LCD backlighting or signage icons.