The **LTL-4223-R1** is a specific electronic component manufactured by **Lite-On**. It belongs to the category of optoelectronic devices, specifically a **Through-Hole LED**. Below is a detailed breakdown of its electronic specifications and characteristics. --- ### 1. General Overview The LTL-4223-R1 is a **High Efficiency Red** light-emitting diode (LED). It is commonly used as a status indicator in consumer electronics, industrial equipment, and instrumentation. ### 2. Technical Specifications The table below summarizes the key electrical and optical parameters: | Parameter | Specification | Unit | | :--- | :--- | :--- | | **Color** | High Efficiency Red | - | | **Peak Wavelength** | 635 | nm | | **Luminous Intensity** | 12.6 (Typ) | mcd | | **Forward Voltage ($V_F$)** | 2.0 (Typ) / 2.6 (Max) | V | | **Forward Current ($I_F$)** | 20 (Nominal) | mA | | **Viewing Angle** | 40 | Degrees | | **Lens Appearance** | Red Diffused | - | | **Package Size** | 3mm (T-1) | - | --- ### 3. Physical & Design Features * **Package Type:** T-1 package (3mm diameter), which is smaller than the standard 5mm LEDs, making it ideal for dense PCB layouts. * **Diffused Lens:** The red diffused lens helps scatter the light, providing a wider viewing angle and ensuring the light is not too harsh for direct observation. * **Mounting Type:** Through-hole (leaded), typically soldered into holes on a printed circuit board. ### 4. Absolute Maximum Ratings Exceeding these values can lead to permanent damage to the component: * **Power Dissipation:** 100 mW * **Peak Forward Current:** 120 mA (1/10 Duty Cycle, 0.1ms Pulse Width) * **Continuous Forward Current:** 30 mA * **Operating Temperature:** -55°C to +100°C * **Storage Temperature:** -55°C to +100°C --- ### 5. Implementation Notes To use this LED safely in a circuit, a **current-limiting resistor** is required. You can calculate the resistance using Ohm's Law: `R = (V_source - V_F) / I_F` **Example:** For a 5V supply and 20mA current: `R = (5V - 2.0V) / 0.020A = 150 Ohms.`