The **QBLP655-RIG** is a high-brightness, Surface Mount Device (SMD) LED manufactured by **QT-Brightek**. It belongs to the 1210 (3225 metric) package size category and is known for its bi-color or multi-chip capabilities. --- ### 1. Key Technical Specifications The "RIG" suffix typically denotes a Bi-Color configuration (Red and True Green). | Parameter | Red (R) | True Green (IG) | | :--- | :--- | :--- | | **Material** | AlGaInP | InGaN | | **Wavelength (typ)** | 624 nm | 525 nm | | **Luminous Intensity (typ)** | 100 mcd | 500 mcd | | **Forward Voltage ($V_F$)** | 2.0V | 3.2V | | **Viewing Angle** | 140° | 140° | | **Test Current ($I_F$)** | 20mA | 20mA | --- ### 2. Physical Dimensions & Packaging The 1210 package is larger than standard 0603 or 0805 LEDs, allowing for better heat dissipation and dual-die integration. * **Size:** 3.2mm x 2.5mm x 1.1mm. * **Package Type:** Top-emitting SMD. * **Lens Color:** Water Clear (non-diffused) for maximum light output. * **Form Factor:** Industry-standard 1210 footprint. --- ### 3. Pin Configuration Since this is a bi-color LED, it usually features four terminals (two for each chip) to allow independent control of the Red and Green light. This allows for: 1. **Red Only** 2. **Green Only** 3. **Amber/Yellow** (by lighting both simultaneously). --- ### 4. Typical Applications * **Status Indicators:** Network routers, servers, and consumer electronics. * **Backlighting:** Keypads, LCDs, and push-buttons. * **Industrial Controls:** Power/Fault status (Green for OK, Red for Error). --- ### 5. Implementation Example (Python/Arduino Logic) If controlling this LED via a microcontroller, you must use current-limiting resistors. ```python # Pseudo-code for controlling a Bi-Color LED (Red/Green) LED_RED = 14 LED_GREEN = 15 def set_status(mode): if mode == "NORMAL": power_on(LED_GREEN) power_off(LED_RED) elif mode == "ERROR": power_on(LED_RED) power_off(LED_GREEN) elif mode == "BOOTING": # Mixing Red and Green creates Amber/Yellow power_on(LED_RED) power_on(LED_GREEN) ```