The **GT21-1S-R** is a specific high-speed data transmission connector, part of the GT21 series commonly manufactured by companies like **Hirose Electric**. It is primarily used in automotive electronics for high-speed differential signaling, such as USB 2.0 or LVDS (Low-Voltage Differential Signaling). --- ### 1. Technical Specifications The following table outlines the key electrical and physical characteristics of the GT21-1S-R: | Parameter | Specification | | :--- | :--- | | **Connector Type** | Female Housing (Socket) | | **Number of Positions** | 1 Position (Shielded) | | **Rated Current** | 1.0 A | | **Rated Voltage** | 30V AC / 60V DC | | **Insulation Resistance** | 100 MΩ Minimum (at 100V DC) | | **Withstanding Voltage** | 250V AC for 1 minute | | **Contact Resistance** | 30 mΩ Max (Initial) | | **Operating Temperature** | -40°C to +105°C | --- ### 2. Key Electronic Components & Features The "parts" of the GT21-1S-R assembly are designed to maintain signal integrity in harsh environments: * **Shielding Shell:** Metal outer casing designed to prevent Electromagnetic Interference (EMI) and provide a robust ground path. * **Insulator (Housing):** Usually made of a high-performance thermoplastic (like PBT or LCP) to isolate the signal terminal from the shield. * **Terminal (Crimp Contact):** While the housing is the GT21-1S-R, it requires specific crimp terminals (often gold or tin-plated) to establish the electrical connection with the wire. * **Locking Mechanism:** Features a tactile "click" lock to ensure the connection remains secure despite automotive vibrations. --- ### 3. Application Use Cases This connector is typically found in the following electronic systems: 1. **Automotive Infotainment:** Connecting head units to USB ports or smartphone integration modules. 2. **ADAS Systems:** Low-resolution camera feeds or sensor data transmission. 3. **Telematics:** Connecting GPS or cellular modules to the main vehicle BUS. ### 4. Typical Wiring Structure ```python # Conceptual representation of the shielded connection { "Core": "Signal (+) / Signal (-)", "Insulation": "Dielectric layer", "Shield": "Outer braid connected to GT21 Shell", "Jacket": "Protective outer layer" } ``` ---