The part number **A-2004-2-4-LP-FS-R** typically refers to a specific type of **RJ45 Modular Jack** connector, often manufactured by companies like **Assmann WSW Components**. These components are standard in networking and telecommunications hardware. --- ## Technical Specifications Breakdown The alphanumeric code describes the physical and electrical characteristics of the connector. Below is a breakdown of what each segment represents: | Segment | Meaning | Description | | :--- | :--- | :--- | | **A-2004** | Base Series | Represents the RJ45 (8P8C) modular jack family. | | **2** | Number of Ports | Indicates this is a **Dual Port (2-port)** side-by-side connector. | | **4** | Number of Contacts | Specifically indicates the wiring configuration (usually 8P8C for RJ45). | | **LP** | Profile | Stands for **Low Profile**, meaning the height of the jack is reduced for slim devices. | | **FS** | Shielding | Stands for **Full Shielded**. The connector has a metal shell to prevent EMI. | | **R** | Packaging/RoHS | Indicates **RoHS compliance** and often signifies **Reel** or specific tray packaging. | --- ## Key Electronic Features ### 1. Shielding (FS) The "FS" designation is critical for electronic integrity. The metal housing wraps around the plastic body to: * **Reduce EMI:** Protects the data signal from Electromagnetic Interference. * **Grounding:** Provides a path to the PCB ground via integrated "solder tabs" or "grounding fingers." ### 2. Low Profile (LP) Design This part is engineered for space-constrained PCB environments. * **Physical Height:** Usually significantly shorter than standard RJ45 jacks. * **Application:** Used in thin networking switches, laptops, or embedded IoT devices. ### 3. Contact Materials * **Plating:** Most variations of this part use **Gold plating** over Nickel on the contact surface to prevent corrosion and ensure high conductivity over thousands of mating cycles. * **Durability:** Rated for approximately 750 mating cycles. ### 4. Mounting Type * **Through-Hole (THT):** This part typically features pins that go through the PCB and are soldered on the opposite side for mechanical strength, which is necessary for connectors that experience physical strain. --- ## Summary Table | Feature | Specification | | :--- | :--- | | **Connector Type** | RJ45 (8P8C) | | **Orientation** | Right Angle (Side Entry) | | **Number of Ports** | 2 | | **Shielding** | Fully Shielded | | **Environmental** | RoHS Compliant |