The **SML-R13BWT86P** is a high-brightness surface-mount (SMD) LED manufactured by **Rohm Semiconductor**. It belongs to the SML-R13 series, characterized by its ultra-compact size and high reliability. --- ### 1. Technical Specifications The following table summarizes the core electronic and physical characteristics of the component: | Parameter | Specification | | :--- | :--- | | **Emitting Color** | Blue | | **Material** | InGaN (Indium Gallium Nitride) | | **Package Size** | 1608 Metric (0603 Inch) - 1.6 x 0.8 mm | | **Luminous Intensity** | 16mcd to 40mcd (typical) | | **Forward Voltage ($V_F$)** | 2.9V (Typical) | | **Forward Current ($I_F$)** | 5mA (Recommended) / 20mA (Max) | | **Dominant Wavelength** | 470nm | | **Operating Temperature** | -40°C to +85°C | --- ### 2. Key Features and Construction * **Miniature Footprint:** The "1608" package size is ideal for high-density circuit boards where space is a premium. * **High Brightness:** Utilizing InGaN technology allows for high efficiency and brightness even at lower currents (5mA). * **Flat Top Lens:** Provides a wide viewing angle, making it suitable for status indicators and backlighting. * **Taping Specifications:** The "T86P" suffix refers to the specific embossed carrier tape packaging used for automated SMT (Surface Mount Technology) assembly. --- ### 3. Pinout and Circuit Integration To integrate this part into an electronic circuit, the following considerations apply: #### Polar Orientation The LED is a diode and must be oriented correctly. On the physical package, there is usually a **cathode mark** (often a green line or a notch) on the underside or the side of the component. #### Basic Current Limiting Circuit To prevent the LED from burning out, a series resistor ($R$) is required. ```cpp // Formula: R = (Source Voltage - Forward Voltage) / Forward Current // Example for 5V supply: // R = (5V - 2.9V) / 0.005A // R = 420 Ohms (Standard value: 470 Ohms) ``` --- ### 4. Common Applications * **Consumer Electronics:** Indicator lights for smartphones and wearables. * **Automotive:** Dashboard backlighting and internal control panels. * **Industrial:** Status indicators on PCBs and modular equipment.