In order to follow the requirements of the market on always smaller devices and low-priced manufacturing costs, WECO has made use of the principle of surface mount also for terminals and plug connectors in 3.5 and 5.0mm pitch and was able to establish as an outrider in the electronics sector with these innovative developments.
The advantages for SMD technology also for terminals and plug connectors are clearly obvious: Higher density and reciprocal extent of utilization of the printed circuit board work against the always rising prices for PCBs. Since holes are not necessary any more, there is more clearance for the PCB layout.
Also the risk of broken PCBs, due to drilling damages, is reduced what is not insignificant if cheap PCBs are used.
Especially the problem of unevenness with low-priced printed circuit boards WECO took particularly care of. With a special patented development, the "floating" contact elements, which adapt to each board surface, WECO guarantees 100% coplanarity for their SMD connectors.
 
|
The SMD printed circuit board terminals 140-A with a centre-to-centre spacing of 5 mm has a screw connection with a lift system, equal to the 210-A-SMD with a centre-to-centre spacing of 3,5 mm.
The terminal clamp with the contact leads is made of one piece and is locked in the moulding. The mouldings are made of heat-resistant thermoplastic and provided with torsion protection. |
|
At the 140-A-524 we use extensive soldering cylinders, the 210-A-SMD has plastic pegs. |
|
Mouldings of heat-resistant material and round connector pins with a soldering foot are the main features of the pin strip 120-M-221-SMD. The pins are moveable in the longitudinal axle, that is why the even position of the soldering feet on the pads is guaranteed. As mating plugs we can offer the versions 120-A, 120-D and 120-F. |
