ERNI Modular Jacks

ERNI Modular Jack connectors have been used in the communications and information industry for many years due to their simplicity and reliability. Today’s electronic system packages are getting smaller, whilst performance standards continue to rise. Consequently, applications that use integrated magnetics are becoming more popular. When the magnetic components are integrated, this reduces both interference sensitivity and board surface requirements. The filter elements are integrated without any changes to the size of the jack housing.

Technical Support
Jacarem has been An ERNI distributor since 2006, so our team have an abundance of knowledge to assist with your ERNI Modular Jack connector designs.


In control and communication technology ERNI Modular Jacks are one of the most frequently used type of connectors. It is compact and also simple to handle and enables high transmission rates up to the Gigabit range.

ERNI Modular Jacks can also be found frequently in industrial environments. They are used for data transmission of industrial applications, such as automation systems or control systems. Other areas of application are medical and measurement technology. Thanks to the PoE standards (Power over Ethernet), ERNI Modular Jack connectors are also suitable for applications in the transmission of electrical energy.

Data Sheets & Resources

ERNI Modular Jack Selection Guide
ERNI Magnetics Reference
ERNI Wave Soldering


  • compliance with Ethernet standards
  • data rates in the Gigabit range
  • integrated  filter components
  • shielding for high signal quality
  • angled and straight shapes
  • integrated  LED displays
  • RJ11 and RJ45 sizes
  • THT, THR, SMT termination
  • Power over Ethernet (PoE)

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For further information please contact our team of technical experts who can assist you with your ERNI Modular Jack Connector requirements and find the best solution for your application. If you require a price or lead time, please e-mail [email protected] or phone 01494 791336.

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