signal|mate - M16-Q Circular Connectors

The circular connectors of our signal|mate - C091 series are recognized industry standard for compact signal and power transmission.  The series M16-Q provides IP67 protected plastic connectors with vibration resistant quicklock mechanism with audible feedback. This simplifies handling and saves time.

The series features 2-8 and 12-19 pin connectors. For contact plating our customers can choose between silver, flash gold (NEW) and hard gold for crimping and soldering. Furthermore, there are different solutions for direct connection to the PCB.

Product features:

  • Waterproof according to protection class IP67  (min. 30min/1m) when mated

  • Vibration resistant quicklock mechanism

  • 13 contact arrangements on a shell size of ⌀ 18mm

  • From 2 to 19 pin for signal and power transmission

  • Current transmission up to 10A at 300V AC/DC

  • Wire cross-section 0.05-1mm² / AWG 30-20

  • Qualified according to UL1977 / certificate number E63093

M16 circular connectors of the signal|mate series are used e.g. in the fields of industrial automation, lighting, control systems, camera technology as well as measurement.

Product Flyer signal|mate M16-Q


Frequently Asked Questions

The following components are required for a complete solution:

  • Cable connector and counterpart of the opposite gender (socket/device part)

  • Release tool FH 0300 091 and installation wrench N 45 091 000 2 U

For crimp versions, the crimp contacts and the crimping tool must be ordered separately.

We have great experience in the development and production of cable assemblies and complete devices, especially on the machine side (distribution boxes, PCBs, covers). Send us your request to and we are happy to support you!

With the M16Q series, there are only limited options for direct connection to the PCB. A solution can be realized with our standard dip solder contacts, but only with a small distance between the board wall and the PCB. Our flying leads with PCB connectors allow more flexibility and failure tolerance. Please let us know your requirements via!

Due to the plastic housing, the shielding of the cable cannot be transmitted via the connector housing. If shielding is required, we refer to metal connectors of the M16D series. If the application permits and the shielding attenuation requirements are only low, it is also possible to transmit the shielding via one of the contacts.

Even though the contact resistance is slightly higher with crimp connections, this connection technology has established itself over soldering. Particularly for large quantities, investing in automatic crimping machines pays off in terms of material costs, workload and quality assurance. We have many years of experience with crimping technology and offer a broad portfolio of crimp contacts across all series, turned and stamped, loose and on reels.

Environmental influences often cause oxidation on the surface of silver-coated contacts, which is indicated by a dark coloration. The oxide layer has no effect on functionality and is automatically rubbed off when plugged in. In use, the oxide layer usually burns out at a load > 24V or 200-300mA. If smaller currents flow, we recommend gold-plated contacts to keep the contact resistance low in the long term.

Our M16Q connectors come with a black plastic housing body as standard. Alternatively, we offer color matching of the various components in the desired color depending on your yearly demands.

As an alternative to the ring nut, our M16 receptacles can also be equipped with an SW20 hexagon nut (part number T 0422 060 9). We are also happy to supply the component directly with a hexagon nut depending on your yearly demands.

In addition to the standard 5 and 7 pole contact layout, there are also stereo versions. Historically, these were used to transmit sound, but today customers usually use other connector solutions (Audio series). The solder connection is typical for the application, which is why these layouts are not available with crimp contacts. With the stereo layouts mechanical coding (Poka Yoke) can be realized.

During a transfer of the production facility in 2010, the "U" was introduced at the end of the part number for clear traceability. The dimensions, material and technical function remained completely unchanged during the process. Today, the "U" is an integral part of the part number, regardless of the supply chain.

Our M16Q connectors are approved with protection class IP67 and are therefore waterproof. The requirement of 30 minutes at a water depth of 1m is only a minimum requirement. On request, we can test the tightness for special water depths and durations. The extended approval according to IP69K is currently being implemented.

The products of the M16Q series have the following approvals:

  • Vibration approval according to IEC 60512-6-4 (10..50Hz, constant amplitude 0.35mm, 50..2000Hz with constant acceleration 5g, 2h per axis)

  • Shock release in accordance with IEC 60512-6-3 (18 shocks in both directions on all 3 axes, 11ms half-sine-shaped with max. acceleration 50g, no electrical interruption >1μs)

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