Comprehensive Guide to STA M5 Series Connectors

De STA November 1st, 2025
The M5 circular connector is a miniature European standard connector that complies with IEC 61076-2-105. Despite its compact size, it delivers excellent protection and stable performance, making it ideal for industrial automation, sensors, and miniature robotics.
Comprehensive Guide to STA M5 Series Connectors

Miniature Industrial Connection Solution for Automation & Robotics

When selecting connectors for compact automation systems, M5 connectors offer high reliability in limited-space environments. As part of the STA M-Series industrial circular connector family, the M5 series works alongside M8, M12 and other models to support complex industrial installations.

To understand global classification and standards of industrial circular connectors, you may refer to IEC standards from the International Electrotechnical Commission (IEC):
https://www.iec.ch

Common applications include:

  • Industrial sensors

  • Robotics and motion control

  • Micro servo systems

  • Automated inspection equipment

Looking for M8 or M12 connector solutions? Explore here:
👉 M8 Circular Connector Series
👉 M12 Industrial Connector Series


Key Features of STA M5 Connectors

Feature Description
Protection IP67 Waterproof
Pin options 3-pin / 4-pin
Mount type PCB, front-mount, back-mount
Cable options Over-molded cable assemblies
Rated current 1A
Rated voltage 60V

To learn how IP67 rating is classified, refer to IEC protection codes:
https://en.wikipedia.org/wiki/IP_Code


Application Industries

Industries Use case
Automation I/O signals, control lines
Sensor systems Photoelectric, proximity sensors
Robotics Micro motor control, encoder feedback
Measurement devices Miniature instrumentation

Want to choose the right connector? See our guide:
📘 How to Select Industrial Circular Connectors


Why Choose STA M5 Connectors?

  • 500+ mating cycles

  • Gold-plated contacts for stable transmission

  • Nickel-plated brass housing, corrosion resistant

  • Built to IEC and industry safety standards

Download technical datasheet:
📎 M5 Series Technical PDF


Purchase & Custom Options

We provide:

  • Standard M5 connector stock

  • OEM / ODM cable assembly

  • Fast prototyping services

👉 Contact STA Engineering Team
👉 Request M5 Connector Samples

Q1: What cable types are available for the M5 molded connector?
A1: STA offers PVC, TPU, and PUR cables, with lengths customizable from 0.5m to 10m to meet different industrial environments.
 
Q2: Can the connector be used outdoors?
A2: Yes, the IP67 waterproof connector design provides full protection against dust and rain, making it suitable for outdoor installations.
 
Q3: Are 3-pin and 4-pin connectors compatible with standard M5 sockets?
A3: Yes, both versions comply with IEC 61076-2-105 standards, ensuring compatibility with most M5 industrial connectors.
 
Q4: Does STA provide OEM or custom overmolded designs?
A4: Absolutely. We offer customized pin layouts, cable colors, and logos based on your project requirements.
 
Q5: What industries use M5 connectors the most?
A5: M5 connectors are widely applied in automation, robotics, LED control systems, and precision instruments.

 

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