The **SML-R13PWT87P** is a high-brightness, surface-mount (SMD) Light Emitting Diode (LED) manufactured by **ROHM Semiconductor**. It is part of the SML-R1 series, known for its compact size and high reliability in automotive and industrial applications. --- ## 1. Technical Specifications Below are the primary electronic and physical characteristics of the component: | Feature | Specification | | :--- | :--- | | **Manufacturer** | ROHM Semiconductor | | **Color** | Green | | **Package Size** | 1608 (0603 inch) | | **Dimensions** | 1.6 x 0.8 x 0.6 mm | | **Luminous Intensity** | 45 mcd (typical) | | **Forward Voltage ($V_F$)** | 2.2 V (typical) | | **Forward Current ($I_F$)** | 20 mA | | **Peak Wavelength** | 560 nm (Yellowish-Green) | | **Operating Temperature** | -40°C to +85°C | | **Lens Type** | Transparent / Milky White | --- ## 2. Key Electronic Features ### A. Material Composition The LED utilizes **GaP (Gallium Phosphide)** on a GaP substrate. This technology is standard for green and yellow-green spectrum LEDs, offering a balance between cost-efficiency and brightness. ### B. Footprint and Packaging * **0603 Form Factor:** The "1608" metric (1.6mm x 0.8mm) makes it ideal for high-density circuit boards. * **Low Profile:** With a height of only 0.6mm, it is suitable for backlighting in thin devices. ### C. Electrical Polarity The component features a specific marking (usually a notch or a colored line on the underside) to indicate the **Cathode** terminal, ensuring correct orientation during automated assembly. --- ## 3. Practical Applications The SML-R13PWT87P is commonly integrated into the following systems: 1. **Automotive:** Dashboard indicators, button backlighting, and interior accent lighting. 2. **Consumer Electronics:** Battery status indicators, power LEDs for mobile devices. 3. **Industrial:** Status lamps on PLCs (Programmable Logic Controllers) and network switches. --- ## 4. Soldering Reference The part is designed for reflow soldering. Below is a simplified representation of the recommended profile: ```text Preheat: 150°C to 180°C (60-120 sec) Peak Temp: 260°C (Max) Soldering Time: 10 sec (Max at Peak) ```