Based on the part number **LHR9UG2092-R22-PF**, this component is a **Surface Mount Device (SMD) LED**, likely manufactured by companies like Everlight or similar optoelectronic specialists. The nomenclature typically breaks down into specific physical and electrical characteristics. ### 1. Component Overview The LHR9UG2092 is a **Dual-Color LED** (Bi-color), meaning it contains two different semiconductor chips within a single package. | Feature | Specification | | :--- | :--- | | **Package Type** | Chip LED (Surface Mount) | | **Colors** | Red (Hyper Red) and Green (Ultra Green) | | **Configuration** | Common Anode or Common Cathode (typically 4-pin or 3-pin) | | **RoHS Status** | PF (Lead-Free / RoHS Compliant) | --- ### 2. Technical Characteristics Below are the typical electrical and optical properties for this class of bi-color SMD LED: #### A. Optical Properties * **Wavelength (Red):** ~620nm to 630nm (Hyper Red). * **Wavelength (Green):** ~570nm (Yellowish-Green). * **Luminous Intensity:** Usually measured in mcd (millicandela), varying based on the specific binning. * **Viewing Angle:** Typically 120° to 140° due to the flat-top SMD lens. #### B. Electrical Properties | Parameter | Red Chip (Typical) | Green Chip (Typical) | | :--- | :--- | :--- | | **Forward Voltage ($V_F$)** | 1.8V - 2.4V | 2.0V - 2.4V | | **Forward Current ($I_F$)** | 20mA | 20mA | | **Power Dissipation** | 60mW - 75mW | 60mW - 75mW | --- ### 3. Part Number Breakdown While manufacturer codes vary slightly, the breakdown for this series generally follows: * **LH / R9 / UG:** Denotes the color combination. * *R9:* Hyper Red. * *UG:* Ultra Green. * **2092:** Represents the physical package size or internal series designator (often 1210 or 0805 equivalent footprints). * **R22:** Usually refers to the specific internal die layout or lens type. * **PF:** Stands for **Pb-Free** (Lead-Free), indicating environmental compliance. --- ### 4. Applications These LEDs are commonly used in electronic devices for status indication: * **Network Equipment:** Link/Activity lights (Green for OK, Red for Error). * **Consumer Electronics:** Charging indicators (Red for charging, Green for full). * **Industrial Panels:** Toggle status indicators where space is limited.