The **LH3344-R** is a specific type of **Light Emitting Diode (LED)** manufactured by ams-OSRAM. It belongs to the T1 (3mm) radial leaded family and is primarily used for status indication and backlighting. Below is a detailed breakdown of its electronic specifications and characteristics. --- ### 1. General Specifications The LH3344-R is categorized as a **Super-Red** LED. It is designed for high reliability and efficiency in standard through-hole mounting applications. | Feature | Specification | | :--- | :--- | | **Color** | Hyper Red (Super-Red) | | **Peak Wavelength** | 645 nm | | **Dominant Wavelength** | 633 nm | | **Package Size** | T1 (3 mm diameter) | | **Lens Type** | Colorless Clear (Diffused variant also exists) | | **Technology** | GaAlAs (Gallium Aluminum Arsenide) | --- ### 2. Absolute Maximum Ratings These values represent the physical limits of the component. Operating beyond these may cause permanent damage. | Parameter | Symbol | Value | Unit | | :--- | :--- | :--- | :--- | | **Forward Current** | $I_F$ | 30 | mA | | **Surge Current** ($t \leq 10 \mu s$) | $I_{FS}$ | 500 | mA | | **Reverse Voltage** | $V_R$ | 5 | V | | **Power Dissipation** | $P_{tot}$ | 100 | mW | | **Operating Temperature** | $T_{op}$ | -40 to +100 | °C | --- ### 3. Electrical & Optical Characteristics These values are typical when the LED is operated at a standard forward current ($I_F = 20 \text{ mA}$). | Characteristic | Symbol | Min | Typ | Max | Unit | | :--- | :--- | :--- | :--- | :--- | :--- | | **Forward Voltage** | $V_F$ | 1.50 | 1.80 | 2.40 | V | | **Luminous Intensity** | $I_v$ | 28 | 70 | 180 | mcd | | **Viewing Angle** | $2\phi$ | - | 40 | - | deg | --- ### 4. Application Considerations When designing a circuit with the LH3344-R, consider the following: * **Current Limiting:** A resistor must be used in series to prevent the LED from drawing too much current. Use the formula: `R = (V_supply - V_f) / I_f` * **Polarity:** As a radial leaded component, the **longer lead** is typically the Anode (+), and the **shorter lead** (often accompanied by a flat edge on the plastic housing) is the Cathode (-). * **Thermal Management:** While low power, ensure adequate spacing if multiple LEDs are packed tightly to avoid heat buildup, which can shift the wavelength (color). ---