The **KRTB-2C1-R/Q** is a high-performance **RGB (Red, Green, Blue) LED** manufactured by **Kyocera (formerly Kyocera-AVX)**. It is specifically designed for surface-mount (SMD) applications where high brightness and a compact footprint are required. --- ### 1. General Specifications The device is a common-anode or individual-lead configuration LED packaged in a 4-pin or 6-pin surface mount frame (depending on the specific sub-series variant). | Feature | Specification | | :--- | :--- | | **Package Size** | 1.0 x 1.0 mm or 1.6 x 1.6 mm (Series dependent) | | **LED Colors** | Red, True Green, Blue | | **Technology** | AlGaInP (Red), InGaN (Green & Blue) | | **Mounting Type** | SMD (Surface Mount Device) | | **Lens Type** | Clear / Water Clear | --- ### 2. Optical Characteristics The "R/Q" designation often refers to the specific binning for luminous intensity or wavelength. | Color | Wavelength (Typical) | Luminous Intensity (mcd) | | :--- | :--- | :--- | | **Red** | ~624 nm | 45 - 112 mcd | | **Green** | ~525 nm | 140 - 355 mcd | | **Blue** | ~470 nm | 28 - 71 mcd | --- ### 3. Electrical Parameters Typical operating conditions for the KRTB series: * **Forward Voltage ($V_F$):** * Red: 1.8V - 2.4V * Green: 2.7V - 3.4V * Blue: 2.7V - 3.4V * **Forward Current ($I_F$):** Typically 5mA to 20mA (Max values vary per color). * **Power Dissipation:** Low power consumption, suitable for battery-operated devices. --- ### 4. Key Features & Applications #### Features: * **Small Footprint:** Ideal for high-density circuit boards. * **Wide Viewing Angle:** Usually around 120°, providing uniform light distribution. * **High Reliability:** Designed for consumer electronics and industrial indicators. #### Common Applications: 1. **Consumer Electronics:** Backlighting for buttons, status indicators on wearables. 2. **Smartphones/Tablets:** Notification lights and accent lighting. 3. **Industrial:** Panel indicators and status displays. 4. **Automotive:** Interior ambient lighting and dashboard icons. --- ### 5. Implementation Notes When designing with the KRTB-2C1-R/Q, ensure that: * **Current Limiting Resistors:** Separate resistors are used for each color channel because the forward voltages ($V_F$) differ significantly. * **Thermal Management:** While low power, dense arrays of these LEDs require adequate PCB copper pour for heat dissipation.