The **DMH-C-R** series refers to a specific category of **Micro-Coaxial Connectors** manufactured by **I-PEX**. These are high-performance electronic components designed for space-constrained environments requiring high-speed data transmission. --- ### 1. Key Technical Specifications These connectors are engineered for high-frequency signals, commonly used in displays and camera modules. | Feature | Specification (Typical) | | :--- | :--- | | **Pitch** | 0.5 mm or 0.4 mm (depending on specific sub-model) | | **Connection Type** | Micro-Coaxial Cable to Board | | **Data Rate** | Supports up to 20 Gbps+ (compatible with Thunderbolt 3/USB4) | | **Mating Height** | Ultra-low profile (approx. 1.0mm - 1.5mm) | | **Shielding** | 360° EMI/EMC Shielding design | --- ### 2. Major Electronic Components & Design The DMH-C-R assembly consists of three primary electronic segments: #### A. The Receptacle (Board Side) * **Contacts:** Usually made of copper alloy with gold plating to prevent oxidation and ensure low contact resistance. * **Housing:** High-temperature thermoplastic (LCP - Liquid Crystal Polymer) capable of withstanding SMT reflow soldering temperatures. * **Metal Shell:** A stainless steel or copper alloy shell that provides mechanical grounding and EMI protection. #### B. The Plug (Cable Side) * **Termination:** Uses **IDC (Insulation Displacement Contact)** or soldering to connect to micro-coaxial wires (AWG 36 to AWG 44). * **Locking Mechanism:** Features a physical "Click" lock or friction lock to ensure the connection stays secure under vibration. #### C. Signal Integrity Features * **Impedance Matching:** The internal geometry is designed to maintain a 100-ohm (differential) or 50-ohm (single-ended) impedance. * **Grounding Bars:** Multi-point grounding to minimize "ground bounce" during high-speed switching. --- ### 3. Common Applications Due to their compact size and high bandwidth, these parts are found in: * **Laptops/Tablets:** Connecting the motherboard to the LCD/OLED panel (eDP - Embedded DisplayPort). * **Smartphones:** Camera module interfaces (MIPI CSI). * **Medical Equipment:** High-resolution imaging probes and handheld scanners. * **AR/VR Headsets:** High-speed data links for internal sensors and displays. --- ### 4. Part Number Breakdown Example While specific to the manufacturer, the "DMH-C-R" designation usually follows this logic: ```text DMH - C - R | | | Series | Receptacle (Board side) Cable Type (Coaxial) ```