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    AI Overview
    What Is a PCB Connector? Types, Selection & Design Tips
    Type M PCB Connectors refer to industrial circular connectors (like M8, M12, M16, M23) with threaded locking, used for robust signal/power on PCBs, featuring various contact layouts (3-19 pins) with A, B, D, X coding, and often IP67-rated for harsh environments, ensuring secure, reliable connections for sensors, automation, and vehicle systems. 
    Key Characteristics 
    • Threading: Defined by a threaded coupling nut (e.g., M12 means 12mm thread) for secure mechanical mating.
    • Sizes: Common sizes include M5, M8, M12, M16, M23, catering to different space and power needs.
    • Contact Density: Varying pin counts, from few (M8: 2-8) to many (M23: up to 19+), with configurations like 3, 4, 5, 8, 12 pins.
    • Coding: Available in A-code (power), B-code (fieldbus), D-code (Ethernet), X-code (fast Ethernet/data) for specific applications.
    • Environmental Protection: Often IP67 rated, making them dust-tight and water-resistant for industrial settings. 
    Contact Types & Materials 
    • Materials: Contacts are typically copper alloy, often gold-plated for corrosion resistance and better conductivity, while shells are aluminum or plastic.
    • Technology: Some feature advanced designs like Hypertac (wire-to-wire) for low resistance, high current, and vibration immunity, crucial for PCB connections. 
    PCB Integration 
    • Mounting: Available as board-mount (through-hole or SMT) to connect directly to the PCB.
    • Pitch: Connectors like Phoenix Contact's COMBICON M series offer various pitches (e.g., 5.08mm, 5mm) for different density requirements. 
    Common Applications 
    • Industrial Automation, Sensors, Robotics, Automotive (engine control, lighting). 
    • M Connector - M12, M8, M23, M5, M16 Connector - Renhotec Pro
      The typical M series connectors are M8, M5, M23, M16, and M12 connectors. All M series connectors are available in A, B, D, and X ...
      renhotecpro.com
    • What are M-Type Sensor Connectors?
      Jan 14, 2023 — The threaded locking nut characterizes M-type connectors. Various connector sizes are available including M5, M8, and ...
      Connector Supplier
    • M Series Connectors Selection Guide: Specs, Types, & Usage
      Nov 5, 2025 — Table_title: Brief Comparison of M-Type Connectors Table_content: header: | Connector Types | Thread Size | Typical Con...
      Amphenol LTW
    Show all
    • M Connector - M12, M8, M23, M5, M16 Connector - Renhotec Pro
      The typical M series connectors are M8, M5, M23, M16, and M12 connectors. All M series connectors are available in A, B, D, and X ...
      renhotecpro.com
    • What are M-Type Sensor Connectors?
      Jan 14, 2023 — The threaded locking nut characterizes M-type connectors. Various connector sizes are available including M5, M8, and ...
      Connector Supplier
    • M Series Connectors Selection Guide: Specs, Types, & Usage
      Nov 5, 2025 — Table_title: Brief Comparison of M-Type Connectors Table_content: header: | Connector Types | Thread Size | Typical Con...
      Amphenol LTW
    • PCB connectors
      PCB connectors are used for connecting conductors to printed circuit boards for the transmission of signals, data, and power. With...
      Phoenix Contact·
      0:38
    • Plastic PCB Micro-D Connectors | ITT Cannon
      Liquid Crystal Polymer (LCP) per MIL-M-24519, Type GLCP-30F (9-100), Glass filled diallyl phthalate per MIL-M-14, Type SDGF (7*2 a...
      ITT Cannon
    • MSTBP 2,5/18-ST - PCB connector - 1765933 - Phoenix Contact
      Table_title: Product details Table_content: header: | Product family | MSTBP 2,5/..-ST | row: | Product family: Product line | MST...
      Phoenix Contact
    • IC 2,5/14-STF-5,08 - PCB connector - 1825433 - Phoenix Contact
      Table_title: Product details Table_content: header: | Product family | IC 2,5/..-STF | row: | Product family: Product line | IC 2,
      Phoenix Contact
    • C9394 - PCB Connectors - Smiths Interconnect
      Lower contact resistance. The design provides a far greater contact area and the wiping action of the wires insures a clean and po...
      Smiths Interconnect
    • PCB Connector Types Guide: Features, Uses, and How to ...
      Nov 28, 2024 — These connectors can be used to achieve various functions in the vehicle, including engine control, transmission contr...
      ATTEND Technology
    • WAGO PCB Connectors & Terminal Blocks For ANY Application
      Oct 31, 2024 — so you can understand how they can help you in your applications. when designing a PCB. we know that space is often at...
      YouTube·WAGO UK & Ireland
      1m
    • M23 Circular Connectors – Signal and Power
      Typically used for providing high performance, reliable and robust connections in commercial and industrial automation application...
      Bulgin
    • Amphenol LTW Industrial Waterproof (IP68) Circular Connectors
      The durability and water-resistance of these Amphenol LTW circular connectors makes them a perfect choice for industrial applicati...
      PEI-Genesis
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    PCB connectors


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    Phoenix Contact
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    PCB connectors: ✓ Pitches from 2.5–15 mm ✓ Secure signal, data, and power transmission ✓ Solutions for control cabinets or your device.

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    M Series


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