The **SSL-LX5093USBD** is a high-intensity Blue LED manufactured by **Lumex Opto/Components Inc.** It belongs to the standard T-5mm (T-1 3/4) through-hole LED category, frequently used for status indicators and decorative lighting. --- ### 1. Key Specifications The following table outlines the primary electrical and optical characteristics: | Parameter | Value | | :--- | :--- | | **Part Number** | SSL-LX5093USBD | | **Color** | Ultra Super Blue | | **Wavelength (Peak)** | 470 nm | | **Luminous Intensity** | 600 mcd (typical) | | **Forward Voltage ($V_f$)** | 3.5V (typical) / 4.0V (max) | | **Forward Current ($I_f$)** | 20 mA | | **Viewing Angle** | 30° | | **Lens Style** | Blue Diffused | | **Package Size** | T-5mm (T-1 3/4) | --- ### 2. Physical Components & Design * **Die Material (InGaN):** The semiconductor material used is Indium Gallium Nitride (InGaN) on a Sapphire substrate. This material is essential for producing high-brightness blue light. * **Encapsulation:** It features a blue-tinted, diffused epoxy lens. The diffusion helps spread the light more evenly, reducing the "spotlight" effect common in clear LEDs. * **Lead Frame:** Standard 1-inch long radial leads for through-hole mounting. The longer lead is the Anode (+), and the shorter lead (near the flat side of the rim) is the Cathode (-). --- ### 3. Electrical Integration To use this LED safely, a current-limiting resistor is required. **Example Calculation:** If using a 5V power supply: $$R = \frac{V_{source} - V_f}{I_f} = \frac{5V - 3.5V}{0.02A} = 75 \Omega$$ ```cpp // Typical usage in a 5V logic circuit (e.g., Arduino) // LED Anode -> 75 Ohm Resistor -> Digital Pin // LED Cathode -> GND ``` --- ### 4. Applications * **Panel Indicators:** High visibility due to the ultra-blue wavelength. * **Backlighting:** Diffused lens makes it suitable for illuminating small LCDs or buttons. * **Consumer Electronics:** Power status or wireless connectivity indicators.