The **M2PHS2W-B4-R** is a specific part number typically associated with **M12 Circular Connectors**, widely used in industrial automation, sensor integration, and networking. Specifically, this part number refers to a **2-position (2-pin), B-coded, shielded, male connector** designed for panel mounting. --- ### ## Technical Specifications The following table outlines the core electronic and mechanical characteristics of the M2PHS2W-B4-R: | Feature | Specification | | :--- | :--- | | **Connector Type** | M12 Circular Connector | | **Gender** | Male (Plug) | | **Coding** | B-Coding (Standard for Profibus/Fieldbus) | | **Number of Pins** | 2-Position | | **Mounting Type** | Panel Mount / Rear Mount | | **Shielding** | Fully Shielded (RFI/EMI protection) | | **Termination** | Solder or Wire Lead (depending on sub-variant) | | **Ingress Protection** | IP67/IP68 (Waterproof when mated) | --- ### ### Key Electronic Components & Design #### 1. B-Coding Configuration The "B-coding" is a physical keying mechanism. It ensures that the connector can only be plugged into a matching B-coded female socket. In electronic systems, B-coding is most commonly utilized for **Profibus** and other network communication protocols to prevent cross-connection with A-coded (sensor) or D-coded (Ethernet) lines. #### 2. Shielding and Grounding The "S" and "R" in the suffix often denote features related to shielding and RoHS compliance. * **EMI/RFI Protection:** The metal housing acts as a Faraday cage, protecting the 2-pin signal from electromagnetic interference. * **360° Grounding:** Usually designed to connect the cable shield to the panel/chassis to maintain ground continuity. #### 3. Contact Materials The pins are typically made of a **Copper Alloy** with **Gold (Au) plating** over Nickel. Gold plating is critical in industrial electronics to: * Prevent oxidation in harsh environments. * Maintain low contact resistance for stable signal transmission. --- ### ### Typical Application Circuit Because this is a 2-pin B-coded connector, it is frequently used for **DC power supply** or **differential signal pairs** in industrial bus systems. ```yaml Pin Configuration (Typical): - Pin 1: V+ (e.g., +24V DC) or Signal + - Pin 2: V- (e.g., 0V/GND) or Signal - - Shell: Shield / Earth Ground ``` ---