The **FI-R3** typically refers to a specific type of high-speed connector, most commonly known as part of the JAE (Japan Aviation Electronics) **FI-R series**. These connectors are industry standards for internal digital video transmission, such as **LVDS** (Low-Voltage Differential Signaling) in flat-panel displays. --- ### 1. Key Technical Specifications The "3" in FI-R3 generally indicates the number of positions (pins) or a specific subset of the series. Here are the general specifications for the FI-R series: | Feature | Specification | | :--- | :--- | | **Pitch** | 0.5 mm | | **Current Rating** | AC/DC 0.7A per terminal | | **Voltage Rating** | AC/DC 200V per terminal | | **Contact Resistance** | 40 mΩ max | | **Dielectric Withstanding** | 500 VAC (1 minute) | | **Operating Temp** | -40°C to +80°C | --- ### 2. Major Components The FI-R system consists of three primary electronic/mechanical parts: 1. **Plug Housing:** The plastic casing that holds the crimp contacts. 2. **Crimp Contacts:** The metallic gold-plated or tin-plated pins that facilitate the electrical connection. 3. **Receptacle (PCB Side):** The socket soldered onto the circuit board (available in straight or right-angle versions). --- ### 3. Application Areas These parts are designed for high-speed differential signals. Common use cases include: * **LCD/LED Displays:** Connecting the main controller board to the T-CON (Timing Controller). * **High-Definition TVs:** Handling large data throughput for 4K/8K resolutions. * **Medical Imaging:** Used in monitors requiring high signal integrity. * **Industrial PCs:** Compact connections in rugged environments. --- ### 4. Technical Drawing Concept (Simplified) `FI-R3` parts often follow a standardized footprint to ensure mechanical stability: ```markdown [ Metal Shell (Shielding) ] ___________________________ | [1] [2] [3] (Pins) | |_________________________| | | | (Solder Leads) ``` --- ### 5. Why use FI-R series? * **Shielding:** The metal shell provides excellent EMI (Electromagnetic Interference) protection. * **Locking Mechanism:** Features a mechanical lock to prevent accidental disconnection due to vibration. * **Low Profile:** The 0.5mm pitch allows for very thin device designs.