RJ45 connector contact what is the end of the way?

RJ45 connector contacts are classified as follows. There are three types of end connection: the direct contact pressure exerted by spring, the direct contact pressure produced by screw and the contact pressure produced by wedge. There is friction at the point of contact. Typical terminals, such as screw-fixed terminals and plug-in terminals; 2, permanent connection: there are a variety of methods, such as brazing, brazing, spot welding, conductive adhesive bonding, etc. , such as compression, winding, cold welding, riveting, etc. .

RJ45 connector contact is a common end-joining method 1, welding generally includes wire and contact welding and contact and contact and printed circuit board welding. Usually connected by manual and wave soldering. The principle is that the solder“Wets” the surface of other metals and forms a tin-solder combination in which various physical, chemical and metallurgical forces and effects are interwoven. The key factors of firm bonding include controlling welding temperature, controlling welding time, cleaning welding surface, etc. . If need flux and solder, due to various improper operation, the microstructure of solder joints may exist hidden trouble; 2, compression: compression welding reliability is high, easy to operate, fast, low requirements for personnel quality, chemical and thermal pollution can be avoided. There are many forms of curl. Cylindrical crimping is commonly used in military products, can be divided into removable and replaceable or non-removable and replaceable. What matters is the proper coordination between the wires, terminals and the operating tools. In addition, stripping should not damage the wire, wire insertion should be appropriate. Crimping tools include manual crimping pliers, automatic or semi-automatic crimping machine.

3. Winding refers to winding the conductor under tension, winding the solid conductor on the cylindrical rod with angles, causing it to deform at the angles, so that the air-tight contact surface is formed between the conductor and the cylindrical rod. See mil-std-1130 for technical requirements for windings. There are manual winding gun and program-controlled automatic winding equipment. There are two types of windings: one is that all the wires wound around the post are wires, and the second is that the ring at the root is a conductor with an insulating sheath. The outstanding features of the winding are its high reliability, 2 -3 orders of magnitude higher than welding, simple operation, easy to pull out the wire when the winding is wrong or the circuit is improved. However, almost all current flows through the first few turns of the wire, which requires winding space, only for small cross-section of a single soft wire, so its use is constrained; 4, insert is a separable physical connection method, the terminal portion of the PIN and bus connector is inserted into the metallized hole of the multilayer PCB, and the elastic structure of the terminal portion contacts the metallized hole. 5. The puncture is actually the crimp between the pin and the bus connector contact and the ribbon cable. There are two ways: one is to puncture the insulation layer (around the wire crimping) ; second, must puncture the wire itself to form crimping (puncture wire crimping) .