The part number **48AV-4CH0-R** typically refers to a high-density, small form-factor interconnect component, most commonly associated with **SFP (Small Form-factor Pluggable)** or **QSFP** cage assemblies used in networking hardware. Below is a detailed breakdown of the electronic and mechanical characteristics associated with this type of component. --- ### 1. Component Overview This part is a **4-Port (1x4) SFP Cage**, designed to house optical or copper transceiver modules. It provides the physical housing, EMI (Electromagnetic Interference) shielding, and mechanical stability for high-speed data ports on a PCB (Printed Circuit Board). ### 2. Technical Specifications | Feature | Specification | | :--- | :--- | | **Component Type** | SFP/SFP+ Cage Assembly | | **Configuration** | 1x4 (4 Ports side-by-side) | | **Mounting Type** | Press-fit (Solderless) or Through-hole | | **Material** | Copper Alloy / Stainless Steel | | **Plating** | Nickel or Tin over Nickel | | **EMI Shielding** | External EMI springs/gaskets | | **Heat Dissipation** | Optional Integrated Heat Sink (H0 variant) | --- ### 3. Key Features #### A. EMI Management The "R" suffix often indicates **RoHS compliance**, while the housing construction focuses on minimizing electromagnetic interference. The cage features "EMI fingers" that make contact with the bezel/panel of the equipment to ensure a continuous ground path. #### B. Mechanical Integrity * **Press-fit Pins:** Designed to be pressed into the PCB holes, creating a gas-tight connection without the need for soldering. * **Port Spacing:** Adheres to standard SFP multi-source agreements (MSA) to ensure compatibility with all standard SFP transceivers (1G, 10G, or 25G). #### C. Thermal Management The **"4CH0"** segment of the part number often specifies the height or the type of heat sink clip included. Because SFP modules generate significant heat during high-speed data transmission, these cages are designed with airflow windows or attachments for passive heat sinks. --- ### 4. Typical Applications These parts are found in high-bandwidth infrastructure equipment, including: * **Network Switches & Routers:** Providing the physical interface for fiber optic uplinks. * **Servers:** Located on Network Interface Cards (NICs). * **Storage Arrays:** Used in Fiber Channel environments. * **Telecommunications:** Base stations and backhaul equipment. ---