The **SML-R12BWT87P** is a high-brightness surface-mount (SMD) LED manufactured by **ROHM Semiconductor**. It belongs to the SML-R12 series, which is characterized by its miniature size and high reliability. --- ### 1. General Specifications This LED is a single-color, ultra-compact component designed for indicator purposes in consumer electronics and industrial equipment. | Parameter | Specification | | :--- | :--- | | **Color** | Red | | **Material** | AlGaInP (Aluminum Gallium Indium Phosphide) | | **Package Size** | 1608 (0603 inch) - 1.6 x 0.8 mm | | **Luminous Intensity** | ~40 mcd (typical at 20mA) | | **Dominant Wavelength** | 624 nm (Red) | | **Forward Voltage ($V_F$)** | 1.9 V (Typical) | | **Operating Temp** | -40°C to +85°C | --- ### 2. Physical Dimensions & Build The part is designed for automated surface mount assembly. * **Footprint:** 1.6mm (L) x 0.8mm (W) x 0.36mm (H). * **Low Profile:** The "flat" nature of the SML-R12 series makes it ideal for thin devices like smartphones, wearables, or membrane switches. * **Lens Color:** Milky White (Diffused) or Clear, depending on the specific sub-binning, though typically the "W" in the suffix indicates a specific resin or finish. --- ### 3. Electrical Characteristics To ensure the longevity of the SML-R12BWT87P, the following electrical limits should be observed: | Absolute Maximum Rating | Value | Unit | | :--- | :--- | :--- | | Power Dissipation ($P_D$) | 48 | mW | | Forward Current ($I_F$) | 20 | mA | | Peak Forward Current ($I_{FP}$) | 100 | mA | | Reverse Voltage ($V_R$) | 5 | V | --- ### 4. Typical Applications Due to its small form factor and efficient power consumption, it is commonly used in: * **Status Indicators:** Power ON/OFF lights on laptops or routers. * **Backlighting:** Illuminating buttons or LCD icons. * **Mobile Devices:** Notification lights in small handheld electronics. * **Automotive Interior:** Dashboard or console illumination. --- ### 5. Part Number Breakdown * **SML:** Series name (ROHM Surface Mount LED). * **R12:** Package size (1608 / 0603). * **B:** Chip material/color code (Red). * **W:** Lens type/color. * **T87:** Taping specifications (usually 8mm tape, 7-inch reel). * **P:** Sorting/Binning classification.