The **LED430-06** is a high-performance AlGaInP (Aluminum Gallium Indium Phosphide) ultraviolet/violet light-emitting diode. It is commonly utilized in specialized industrial, medical, and analytical applications due to its specific peak wavelength and high output power. ### Technical Specifications The following table outlines the typical electrical and optical characteristics of the LED430-06: | Parameter | Symbol | Typical Value | Unit | | :--- | :--- | :--- | :--- | | **Peak Wavelength** | $\lambda_p$ | 430 | nm | | **Forward Voltage** | $V_F$ | 3.6 - 4.2 | V | | **Forward Current** | $I_F$ | 20 | mA | | **Radiant Intensity** | $I_e$ | 10 - 20 | mW/sr | | **Viewing Half Angle** | $\theta_{1/2}$ | ±30 | deg | | **Operating Temperature** | $T_{opr}$ | -30 to +85 | °C | --- ### Key Electronic Components & Construction The LED430-06 is more than just a light source; its physical architecture dictates its performance: 1. **Semiconductor Die:** Uses **AlGaInP** technology. This material choice is critical for achieving the 430nm (Violet) spectrum efficiently. 2. **Lead Frame:** Usually silver-plated copper to ensure high thermal conductivity and low electrical resistance. 3. **Encapsulation:** Typically housed in a clear, UV-resistant epoxy resin or a glass lens (TO-18 package style is common for this specific part) to prevent degradation from the high-energy light emitted. 4. **Anode/Cathode Leads:** Standard polar configuration where the longer lead (or the lead not connected to the case) is the Anode (+). ### Application Use-Cases * **Medical Equipment:** Used in phototherapy and certain types of dental curing. * **Analytical Chemistry:** Often serves as a light source for spectroscopy or high-performance liquid chromatography (HPLC) detectors. * **Counterfeit Detection:** Useful for identifying fluorescent security features in banknotes or identification cards. --- ### Driving the LED (Circuit Example) To operate the LED430-06 safely, a current-limiting resistor is mandatory. Assuming a 5V supply: ```cpp // Calculation for Current Limiting Resistor (R) // R = (V_supply - V_forward) / I_forward // R = (5.0V - 3.8V) / 0.02A // R = 60 Ohms (Standard value: 62 or 68 Ohms) ```