ERNI/TE|M8/M12 Series|Circular Genuine/Alternative Connectors

ERNI/TE|M8/M12 Series|Circular Genuine/Alternative Connectors


Specializing in the production and sales of genuine/substitute connectors, cable products, as well as custom processing of injection-molded parts and stamped parts.

Since the 1980s, M8/M12 connectors have been used in sensor technology and industrial automation devices. The connectors were developed for higher protection classes such as IP65 or IP67. The mating face is coded and standardized so that end customers can use cables from different manufacturers.

Due to the high reliability and robustness, more and more applications and connector codings have been added over the years. The high degree of protection allows decentralized use of the devices and trends such as Industry 4.0 or IIoT are making these devices increasingly intelligent.

The communication of the devices is mostly done via serial systems such as fieldbuses or industrial ethernet. Parallel wiring is largely avoided. Sensors or actors are mostly connected with an A-coded connector. Fieldbuses, for example, use the B coding.

The installation guidelines of the various bus interest groups also provide for the distribution of the connectors. The guidelines recommend certain connectors for the design, e.g. D and X coding for various ethernet protocols or A coding for sensor bus applications.

In order to ensure efficient processing of these connectors, ERNI developed a solution early on that is packaged in tape and reel and can be assembled automatically; among the world‘s first M12 connector with Surface-Mount Technology (SMT) connections.

1.ERNI/TE | M8/M12 connector series | features:

2.ERNI/TE | M8/M12 connector series | advantages:

Stamped Female Contacts

  • economical stamped female contact
  • reliable due to double-sided contacting
  • rolled, homogeneous surface, guarantees more secure contact mating
  • gold plated mating area
  • extremely low surface roughness significantly reduces abrasion
  • low contact resistance
  • SMT termination

Machined Female Contacts

  • reliable due to double-sided contacting
  • gold plated mating area
  • SMT- or THR-Termination depending on requirements for even more flexibility
  • optimized THR solder joints due to short soldering length

Robust Solder Clips

  • outstanding retention forces on the circuit board
  • soldering brackets absorb mechanical stress and are able to withstand high shock and vibration loads
  • high shear and tear-off forces build trust in surface-mounted connectors

Optional Pad

  • with pad for easy assembly with standard nozzles
  • without pad cost-optimized for the assembly experts

Potting / Additional Sealing Function

  • additional sealing point for male connectors
  • protection against liquids even when not plugged in
  • prevents leakage of potting material when the electronics must be encapsulated


  • coding of the mating face prevents mismating
  • different codings enable different interface functions
  • pre-alignment of the cable connectors prevents contact damage

3.ERNI/TE | M8/M12 connector series | Model/material number details:

494015-E 494013-E 494168-E 494518-E 494376-E 494167-E
484924-E 484790-E 284377-E 515632-E 494981-E 494335-E
494927-E 225522-E 225521-E 225292-E 225291-E 225298-E
225297-E 235042-E 225614-E 235045-E 225454-E 225295-E
225294-E 235165-E 235171-E 494007-E 515129-E 484784-E
494068-E 235230-E 515529-E 235265-E 225268-E 225270-E
225269-E 225519-E 225516-E 225518-E 225515-E 484156-E
474331-E 225459-E 225267-E 225266-E 225249-E 225245-E
225247-E 225243-E 225246-E 225242-E 225263-E 225260-E
225256-E 225253-E 225255-E 225252-E 225456-E 474329-E
464912-E 394337-E 394339-E 456645-E 456643-E 456676-E
254776-E 254772-E 254774-E 254780-E 223791-E 223790-E
364415-E 354195-E 223944-E 223789-E 223788-E 223763-E
484896-E 484076-E 484071-E 484074-E 484069-E 494166-E
225165-E 225455-E 225301-E 225300-E 225463-E 515814-E
494375-E 484599-E 225362-E 484944-E 484937-E 484936-E
494023-E 494145-E 474665-E 225273-E 454952-E 474053-E
394811-E 225278-E 225458-E 225274-E 225457-E 225276-E
464431-E 454949-E 454951-E 394305-E 454950-E 464432-E
223787-E 223786-E 223714-E 225039-E 223923-E 223784-E
294935-E 225114-E 454003-E 364175-E 234041-E 223768-E
223766-E 223772-E 223771-E 223770-E 223711-E 223767-E

4.ERNI/TE | M8/M12 connector series | Application field:

The M8 / M12 connectors have proven to be very reliable in industrial use. They are tailor-made for the connection of field devices of industrial automation. A-coded circular connectors can be used, for example, as sensor connectors or device connectors for digital and analog signal transmission or for the power supply. B-coded connector variants are intended for fieldbus interfaces. The D and X coded circular connectors for Ethernet interfaces rounds out the assortment.

ERNI supplements the comprehensive product range of M8 and M12 connectors with application and customized solutions. A high degree of cost efficiency is guaranteed thanks to the option of automatic machine processing and solder processes.

Our M8 / M12 circular connectors enable reliable and flexible I/O or fieldbus connections on the PCB. They can be economically and reliably processed. Thanks to various coding and pin counts there is a broad range of applications.

Product Sales Overview on the JunctionX Platform:

JunctionX specializes in the professional production, distribution, and sales of connectors/authentic substitute connectors, wire harnesses, cable products, and customized injection-molded parts, stamping parts. If you want to purchase or learn more about product solutions, please feel free to contact us through the following methods.



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