Corrosive gas, high humidity and strong oscillation is caused by oxidation and fretting corrosion, and causes the connector fault three conditions. These environmental factors on tin and tin-lead contact surface caused great influence, has a 90% connector surface belongs to this situation.

Usually, people using electroplating of precious metals, such as gold or silver plated, because the metal is not oxidized role. These coating thickness from 0.5 m to 1.27 m laser ranging. However, unfortunately, due to containing these precious metal and its processing makes this kind of plating process are expensive, so people as little as possible with the plating material. In automotive electrical wiring harness application, only about 10% of the connection point using this type of metal.

As a result, some of the major suppliers of connector, such as FCI given other options for electroplating solution ( such as pure tin plating, tin - Teflon TinTeflon, NXT and pressing technology ), not only to meet the OEM cost, and the product has the same performance.

Because must meet high standards of vehicle specifications, source in the telecommunications market, pressing terminal technology ( connector to a circuit board ) became the focus of attention. Because the automobile PCB than used in telecommunications industry PCB to thin, operating temperature ( 125oC ) also is much higher and the use of the environment vibration, want this technology into automotive systems is not an easy thing.

This technique brings significant processing cost benefit, it will be a solder pin is pressed into the metal plate hole in PCB. In order to apply strict automobile application conditions, FCI pressed terminal specially designed, inserted in the PCB provide completely controllable strength, deformation resistance and reduced to a minimum, to ensure that the PCB interface with solid.

Since the ratio of wave soldering is more cost effective, and the process is fully automated, reduces the PCB cost, FCI butterfly solutions ( and related tools ) of getting hit by car manufacturer's favor. In addition to superior performance (compatible with SMT technology and excellent holding element integrity ), as does not exist on PCB thermal shock and tin bridge risk, it also improves the additional process quality.