## Electronic Overview: CLM1B-RKW-CUAVBAA3 The **CLM1B-RKW-CUAVBAA3** is a high-performance Surface Mount Device (SMD) Light Emitting Diode (LED) manufactured by **Cree LED** (formerly Cree Inc.). It belongs to the PLCC4 (Plastic Leaded Chip Carrier) family, specifically designed for reliability and high luminous intensity. ### 1. Key Specifications The following table highlights the primary electrical and optical characteristics of the component: | Feature | Specification | | :--- | :--- | | **Color** | Red | | **Dominant Wavelength** | 619 nm - 624 nm | | **Luminous Intensity** | 710 mcd - 1400 mcd | | **Forward Current ($I_F$)** | 50 mA | | **Forward Voltage ($V_F$)** | 2.1 V (Typical) / 2.6 V (Max) | | **Viewing Angle** | 120 degrees | | **Package Type** | PLCC4 (3.2 x 2.7 mm) | | **Operating Temperature** | -40°C to +100°C | --- ### 2. Functional Breakdown The part number can be decoded to understand its specific manufacturing binning and characteristics: * **CLM1B:** Series designation for PLCC4 One-Color LEDs. * **RKW:** Indicates the color (Red) and specific material (typically AlInGaP). * **CUAVBAA3:** These suffixes represent the **Intensity Bin** (CUA) and the **Color Bin** (A3), ensuring consistency across production batches. ### 3. Applications and Usage Due to its wide viewing angle and high intensity, this LED is commonly used in: 1. **Automotive Lighting:** Dashboard indicators, interior lighting, and stop lamps. 2. **Indicators:** Status lights on consumer electronics and industrial control panels. 3. **Backlighting:** Backlighting for LCDs, switches, and symbols. 4. **Signal Signage:** Channel letters and indoor/outdoor commercial signs. ### 4. Technical Considerations When integrating this part into a circuit, keep the following in mind: ```cpp // Example: Calculating the Resistor for this LED // Formula: R = (Source_Voltage - Forward_Voltage) / Forward_Current float sourceVoltage = 5.0; // 5V Power Supply float forwardVoltage = 2.1; // Typical V_F for CLM1B-RKW float targetCurrent = 0.02; // Operating at a safe 20mA (0.02A) float resistorValue = (sourceVoltage - forwardVoltage) / targetCurrent; // Result: 145 Ohms (Use 150 Ohm standard resistor) ``` --- **Safety Note:** This LED is sensitive to Electrostatic Discharge (ESD). Ensure proper grounding (wrist straps) and handling in an ESD-protected environment to prevent internal chip damage.