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What is a Modular Jack?

Modular jacks connect electrical devices, including computers and telephones, to their outlets. Several applications that once used bulkier connectors now use modular connectors. There are several different modular connectors such as telephone, computer and Ethernet jacks, with telephone and Ethernet jacks almost always using modular connectors.

Types of Modular Jacks

There are many different kinds of modular jacks. At Future Electronics we stock many of the most common types categorized by Type, Style, Number of Positions and Packaging Type. The parametric filters on our website can help refine your search results depending on the required specifications.

The most common values for Number of Positions are 4, 6 and 8. We also carry modular jacks with up to 144 positions.

Modular Jacks from Future Electronics

Future Electronics has a full modular jack connector selection from several manufacturers when looking for an RJ45, RJ12 or RJ11 phone jack, CAT5, CAT5e or CAT6 modular jack, or any other type of telephone or Ethernet jack. Simply choose from the modular jack technical attributes below and your search results will quickly be narrowed in order to match your specific modular jack application needs.

If you have a preferred brand, we deal with several manufacturers such as Adam Tech, Halo Electronics, Keystone or TE Connectivity, among other manufacturers. You can easily refine your modular jack product search results by clicking your preferred modular jack brand below from our list of manufacturers.

Applications for Modular Jacks:

Modular jacks can be found in several applications:

  • Networking
  • Telephone applications
  • RS-232 serial interfaces
  • Power over Ethernet
  • Microphone connector for PMR, LMR and amateur radio transceivers

Choosing the Right Modular Jack:

When you are looking for the right modular jacks, with the FutureElectronics.com parametric search, you can filter the results by various attributes: by Type, Style (Industrial RJ, Shielded Jack, Standard Jack,…), Position (2, 4, 6, 8,…) and Packaging Type. You will be able to find the right RJ45, RJ12 or RJ11 phone jack, CAT6, CAT5 or CAT5e or modular jack or any application requiring an Ethernet or telephone jack.

Modular Jacks in Production Ready Packaging or R&D Quantities

We offer customers many of our modular jack products in tray and tube quantities that will help you avoid unneeded surplus.

In addition, Future Electronics offers clients a unique bonded inventory program that is designed to eliminate potential problems that could arise from an unpredictable supply of products containing raw metals and products with long or erratic lead times. Talk with your nearest Future Electronics branch and find out more on how you can avoid possible shortages.


Modular Jacks By Manufacturer Name:

Modular Jacks by Primary Attributes:

By No of Positions




Featured Modular Jack Products


Manufacturer Part Number Description
Adam TechMTJ-66521MTJ Series 6/6 Position Single Port Right Angle Through Hole Modular Jack
Adam TechMTJ-881X1-NMTJ Series 8 Position Single Port Black Type 1 Side Entry Modular Jack
Adam TechMTJ-88321MTJ Series 8/8 Position Single Port Straight Through Hole Modular Jack
Adam TechMTJ-64301MTJ Series 6/4 Position Single Port Straight Through Hole Modular Jack
Adam TechMTJ-88FX1-FSMTJ Series 8/8 Position Single Port Straight Through Hole Modular Jack
Adam TechMTJ-66321-NMTJ Series 6/6 Position Single Port Straight Through Hole Modular Jack
Adam TechMTJP-623-K6-1-A1-230 MICRO INCH GOLD 7 INCH WIRE LEADED Stripped AND TINNED GRAY Modular Jack
Halo ElectronicsHFJ11-2450E-L12RLFastJack Single Port RJ45 Right Angle LED Green/Yellow10/100BASE-T Modular Jack
Halo ElectronicsHFJ11-2450E-L11RLFastJack Single Port RJ45 Right Angle LED Green/Green 10/100BASE-T Modular Jack
Halo ElectronicsHFJ11-1G16E-L12RLFastJack Single Port RJ45 Right Angle LED Green/Yellow Ethernet Modular Jack
Halo ElectronicsHFJV1-E1G16-L15RLFastJack Single Port Vertical 10/100BASE-T Modular Jack w/LED Green/Green-Yellow
Halo ElectronicsHFJ11-2450E-L21RLFastJack Single Port RJ45 Right Angle LED Yellow/Green Modular Jack
Halo ElectronicsHFJ11-1G01ERLFastJack Single Port RJ45 Right Angle Gigabit Ethernet Modular Jack
Halo ElectronicsHFJ11-E2450E-L12RLFastJack Single Port RJ45 Right Angle LED Green/Yellow 10/100 Modular Jack
TE Connectivity5520425-36 Position Single Port Straight Through Hole RJ25 Modular Jack
TE Connectivity5558872-14 Position Single Port Straight Through Hole RJ22 Modular Jack
TE Connectivity5520251-48 Position Single Port Right Angle Through Hole RJ45 Modular Jack
TE Connectivity5555165-16 Position Single Port Right Angle Through Hole RJ25 Modular Jack
TE Connectivity5520258-36 Position Single Port Straight Through Hole RJ25 Modular Jack
TE Connectivity5555153-18 Position Single Port Right Angle Through Hole RJ45 Modular Jack
TE Connectivity2-406549-48 Position Single Port Right Angle Through-Hole RJ45 Modular Jack
TE Connectivity5520258-26/4 Position Single Port Straight Through Hole RJ14 Modular Jack
TE Connectivity5520425-26/4 Position Single Port Straight Through Hole RJ14 Modular Jack
TE Connectivity5520470-36 Position Single Port Right Angle Through Hole RJ25 Modular Jack
TE Connectivity5555163-16 Position Single Port Right Angle Through Hole RJ25 Modular Jack

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