The defining feature of the wire-to-wire connector is that the corresponding wires in the two cables are permanently connected to each other. Permanent connections are more common in fixed connections and IDC connections.
Connector size and selection: 2.00mm (.079"), 2.50mm (.098"), 2.54mm (.100"), 3.00mm (.118"), 3.50mm (.138"), 3.70mm (.148"), 3.96mm (.156")
Alternative connector brands: JST, XSR, SUR, SUH, MOLEX DuraClik 502351/560123/505151/560020/502352, Milli-Grid 87568, PA, PAD, AMP 175778, JAE IL-S, FOXCONN, HRS, GT8E, ACES 50459, dupont, JC20 & JST SAN, JWPF

Connectors are classified into three basic types: wire-to-wire, wire-to-board, and board-to-board. The three types of connections are not completely different. The following two reasons can explain this type of overlap. First of all, the design scheme of the same connector only needs to be redefined after a slight change in the connection mode, which becomes a new design scheme applicable to another type of connection mode; Secondly, a wire can be assembled with a wire-to-wire connector at one end and a wire-to-board connector at the other end. For example: the appearance of I/O connector level 5 products is the most common example. If the ambiguity of this connection form is avoided, these connection forms just provide an effective basis for the classification of connectors.

Crimping connection is common in discontinuous wire connectors; IDC is often used to dominate cable connectors because of its superiority in wire-related and wire harness end processing. Wire-to-wire connectors have plastic supports of various geometric shapes: such as right-angled and round polymerized plastic parts, as well as many different combinations of plastic parts and metal shielding shells. Mainly used in the military.