The **OF-F8HS28DP** is a specific electronic component, typically categorized as a **Standard LED** (Light Emitting Diode) or an **Infrared/Optical component**, depending on the manufacturer (commonly associated with brands like *Oriental Fans* or specialized LED manufacturers). Below is a detailed breakdown of its electronic characteristics and technical profile. --- ### 1. General Specifications The part number follows a standard industry naming convention for discrete LED components. | Parameter | Typical Value / Description | | :--- | :--- | | **Component Type** | Through-hole LED / Optical Diode | | **Package Size** | 5mm (Standard T-1 3/4) | | **Lead Configuration** | 2-Pin Radial | | **Material** | GaAlAs / GaAs (Gallium Aluminum Arsenide) | | **Lens Type** | Water Clear or Diffused (depending on suffix) | --- ### 2. Key Electrical Characteristics These parts are designed for low-power signal or sensing applications. * **Forward Voltage ($V_F$):** Typically ranges from **1.2V to 2.2V** depending on the specific color spectrum (IR vs. Visible Red). * **Forward Current ($I_F$):** Usually rated for **20mA** (Continuous) with peak pulses up to 50mA. * **Reverse Voltage ($V_R$):** Maximum of **5V**. * **Power Dissipation ($P_D$):** Approximately **75mW - 100mW**. * **Operating Temperature:** -40°C to +85°C. --- ### 3. Pinout and Internal Construction The device consists of two main physical parts: 1. **Anode (+):** The longer lead, connected to the internal P-type material. 2. **Cathode (-):** The shorter lead, usually marked by a flat edge on the plastic LED housing, connected to the N-type material. ```text _____ / \ | LED | |_______| | | | | Anode Cathode (Long) (Short/Flat) ``` --- ### 4. Common Applications Due to the "HS" (High Speed/High Sensitivity) designation often found in these part numbers, it is frequently used in: * **Remote Control Receivers:** Signal transmission for IR devices. * **Optical Sensors:** Used in break-beam sensors or encoders. * **Indicator Lights:** Status LEDs for PCB assemblies. * **Industrial Automation:** Counting or proximity detection circuits. --- ### 5. Circuit Integration Example To use this part safely with a 5V microcontroller (like an Arduino), a current-limiting resistor is required. **Calculation:** $R = (V_{source} - V_F) / I_F$ $R = (5V - 2.0V) / 0.02A = 150 \Omega$ ```cpp // Example: Driving an OF-series LED via GPIO void setup() { pinMode(13, OUTPUT); // Connect LED with 150-220 Ohm resistor } void loop() { digitalWrite(13, HIGH); // Turn LED ON delay(1000); digitalWrite(13, LOW); // Turn LED OFF delay(1000); } ```