## Technical Overview of HLMP-CB26-R0D00 The **HLMP-CB26-R0D00** is a high-brightness, blue Light Emitting Diode (LED) manufactured by Broadcom (formerly Avago Technologies). It is part of the HLMP-Cx2x series, specifically designed for applications requiring high intensity and a well-defined radiation pattern. --- ### 1. Key Technical Specifications The following table summarizes the primary electronic and optical characteristics of the device. | Parameter | Specification | Units | | :--- | :--- | :--- | | **Color** | Blue | - | | **Dominant Wavelength** | 470 nm (typical) | nm | | **Luminous Intensity** | 540 mcd (min) to 1150 mcd (max) | mcd | | **Forward Current ($I_f$)** | 20 mA (Test Condition) | mA | | **Forward Voltage ($V_f$)** | 3.2 V (typical) / 3.8 V (max) | V | | **Viewing Angle** | 23° | Degrees | | **Lens Shape** | T-1 3/4 (5mm) Round | - | | **Mounting Type** | Through-Hole | - | --- ### 2. Physical and Material Composition * **Material:** The LED uses **InGaN (Indium Gallium Nitride)** technology on a Sapphire substrate. This material is essential for achieving the high efficiency required for blue light emission. * **Package Type:** Standard 5mm (T-1 3/4) diameter plastic package. * **Lens Tint:** The device features a blue-tinted, non-diffused (clear) lens to maximize light output and directivity. * **Lead Frame:** Lead-free (RoHS compliant) with silver-plated leads for better conductivity and soldering. --- ### 3. Electronic Performance Features #### A. Directivity and Radiation Pattern With a **23-degree viewing angle**, this LED is categorized as a narrow-beam device. This makes it ideal for sign applications where light needs to be projected toward a specific viewer rather than diffused widely. #### B. Drive Requirements To operate the HLMP-CB26-R0D00 safely, a current-limiting resistor is required. * **Calculation Example:** For a 5V supply: `R = (V_supply - V_f) / I_f` `R = (5V - 3.2V) / 0.02A = 90 Ohms` #### C. Environmental Durability * **Operating Temperature:** Typically rated from -40°C to +80°C. * **Moisture Sensitivity:** These devices are often treated to be resistant to moisture, though they are primarily intended for indoor or protected outdoor signage. --- ### 4. Common Applications Due to its high intensity and specific wavelength, this part is commonly found in: 1. **Electronic Signs and Signals:** Variable message signs (VMS). 2. **Commercial Advertising:** Backlighting for logos or channel letters. 3. **Status Indicators:** High-visibility indicators for industrial panels. 4. **Gaming/Vending Machines:** Decorative lighting where a vibrant blue is needed.