The part number **48DV-2GVB-R** typically refers to a high-density, small-form-factor **SFP+ (Small Form-factor Pluggable)** or **Direct Attach Copper (DAC)** cable assembly, often associated with networking hardware brands like Amphenol or specific OEM server components. Below is a detailed breakdown of its electronic characteristics and specifications. --- ### 1. General Specifications This component is designed for high-speed data transmission in data centers and telecommunications infrastructure. | Feature | Specification | | :--- | :--- | | **Type** | Twinaxial Cable / DAC (Direct Attach Copper) | | **Interface** | SFP+ to SFP+ | | **Data Rate** | Up to 10.3125 Gbps (per channel) | | **Impedance** | 100 Ohms (Differential) | | **Wire Gauge** | Typically 30 AWG or 28 AWG | | **Compliance** | SFF-8431, SFF-8432 | --- ### 2. Key Electronic Components The "Electronic" side of this part involves the PCB (Printed Circuit Board) housed within the connector heads. * **EEPROM Chip:** Contains the "Serial ID" or "Vendor Memory Map." This allows the host switch or router to identify the cable's length, manufacturer, and compatibility. * **Signaling:** It uses **Differential Signaling** to minimize electromagnetic interference (EMI) and crosstalk, which is critical for maintaining signal integrity at 10Gbps speeds. * **Passive vs. Active:** This specific model is usually **Passive**, meaning it does not contain an integrated signal amplifier (Redriver). It relies on the host port's Pre-emphasis and Equalization to maintain the signal. --- ### 3. Physical & Environmental Attributes The construction ensures durability in high-density rack environments. * **Connector Shell:** Zinc die-cast with nickel plating for superior EMI shielding. * **Pull Tab:** Usually color-coded (often green or blue) to indicate length or latching mechanism. * **Operating Temperature:** 0°C to +70°C (Commercial grade). --- ### 4. Applications This part is commonly used in the following scenarios: 1. **Top-of-Rack (ToR) Switching:** Connecting servers to the main switch within the same rack. 2. **Storage Area Networks (SAN):** High-speed data transfer between storage arrays and controllers. 3. **Network Interface Cards (NICs):** Providing 10G connectivity to high-performance workstations. --- ### 5. Part Number Decoding (Typical) While naming conventions vary by manufacturer, the code usually breaks down as: * **48DV:** Series identifier (High-speed Twinax). * **2G:** Often denotes length (e.g., 2 Meters) or Generation. * **VB:** Specific cable jacket material (e.g., PVC or LSZH) or gauge. * **R:** RoHS compliant.