TE Connectivity 3-643814-2 Rectangular Connectors Guide


In the vast and intricate world of electronics, the seemingly small components often hold the most critical roles. Among these, connectors are the unsung heroes, facilitating the flow of power and data that brings our devices to life. Today, we’re diving deep into a specific workhorse: the TE Connectivity 3-643814-2 rectangular connector.

For engineers, designers, and hobbyists alike, understanding the nuances of such components is crucial for successful project execution. The 3-643814-2, part of TE’s venerable MTA 100 Standard series, stands out for its ease of use, robust construction, and versatile applications.This compact, efficient component is more than just a piece of plastic and metal; it’s a testament to reliable engineering and thoughtful design, making countless applications possible.Join us as we explore the features, benefits, and common uses of this essential TE Connectivity product.

1. What is the TE Connectivity 3-643814-2

TE Connectivity 3-643814-2

The TE Connectivity 3-643814-2 is a prime example of an Insulation Displacement Connector (IDC) within the MTA 100 Standard series. MTA, or Mass Termination Assembly, is a technology developed by TE Connectivity ( formerly AMP) designed to simplify and speed up the process of wiring multiple contacts simultaneously. The “100” in MTA 100 refers to the 0.100-inch (2.54mm) center line spacing between contacts, a common industry standard that ensures compatibility and flexibility in design.

Specifically, the 3-643814-2 is a 2-position rectangular receptacle connector. This means it is designed to accept two wires and typically mates with a corresponding header or another in-line connector. Its rectangular form factor is ideal for applications where space is at a premium and a secure, low-profile connection is desired. The IDC termination method is a key distinguishing feature, allowing wires to be connected without the need for stripping insulation, soldering, or individual crimping, significantly reducing labor and potential for error during assembly. The connector is crafted for 24 AWG (American Wire Gauge) wire, making it suitable for a wide range of signal and low-power applications.

This particular part number also specifies “closed with tabs” and a white housing. The “closed with tabs” refers to the design features that provide secure mating and retention when connected to its counterpart, preventing accidental disconnection due due to vibration or movement. The white housing offers clear visual identification and can contribute to aesthetic consistency in certain product designs. Overall, the 3-643814 -2 embodies TE’s commitment to delivering practical, reliable, and user-friendly connectivity solutions.

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