The **HLMP-CB15-RSC00** is a high-brightness Blue LED produced by Broadcom (formerly Avago Technologies). It belongs to the HLMP-Cx15 series, which is designed specifically for applications requiring high intensity and wide viewing angles in outdoor environments. --- ### 1. Key Technical Specifications The part number encodes specific characteristics regarding color, intensity, and packaging. | Parameter | Specification | | :--- | :--- | | **Color** | Blue (InGaN Technology) | | **Dominant Wavelength** | 470 nm (Typical) | | **Luminous Intensity** | 1,500 mcd to 2,500 mcd | | **Viewing Angle** | 15° (Narrow beam for long-distance visibility) | | **Package Type** | T-1 ¾ (5mm) Round Through-hole | | **Lens Appearance** | Clear, Non-diffused | | **Forward Voltage ($V_F$)** | 3.2V (Typical) to 3.8V (Max) | --- ### 2. Internal Electronic Construction The device is built using **Indium Gallium Nitride (InGaN)** material technology on a sapphire substrate. This construction allows for: * **High Efficiency:** Converts electrical energy into light with minimal heat loss compared to older technologies. * **Stability:** Features an epoxy resin that contains UV inhibitors to prevent degradation when exposed to direct sunlight. * **ESD Protection:** These LEDs are sensitive to Static Electricity; usually, they require anti-static precautions during assembly (ESD Class 1). --- ### 3. Pinout and Circuit Integration The HLMP-CB15 follows standard 5mm LED polarity rules: 1. **Anode (+):** The longer lead. 2. **Cathode (-):** The shorter lead, usually marked by a flat edge on the LED's circular base. #### Current Limiting Calculation To operate this LED at a standard 20mA ($I_F = 0.02A$) using a 5V power supply, the resistor ($R$) is calculated as: ```math R = (V_{source} - V_F) / I_F R = (5V - 3.2V) / 0.02A = 90 \Omega ``` *(A standard **100Ω** resistor is recommended for safety).* --- ### 4. Typical Applications Due to its high intensity and narrow 15° viewing angle, this part is commonly used in: * **Variable Message Signs (VMS):** Highway and traffic information boards. * **Commercial Advertising:** Large-scale outdoor video screens. * **Signal Indicators:** Solar-powered path lighting or marine signaling.