New Industry Products

Solderless and Direct Plug-in Connectors

May 17, 2018 by Paul Shepard

Würth Elektronik eiSos has introduced its new “REDFIT IDC SKEDD WR-WST connectors” product family: solderless, space-saving and multi-pluggable connectors for signal transmission. The electronics and electromechanical components manufacturer is using the patented SKEDD technology from its sister company Würth Elektronik ICS for this innovative product.

REDFIT IDC is available in 4- to 20-pin versions and is suitable for permanent use on PCBs as well as for temporary connections for programming and debugging purposes.

REDFIT IDC is a solderless reversible direct plug-in connector with SKEDD technology. It can be manually mounted on the plated-through holes of the PCB, which eliminates the need for extra sockets and any related soldering processes. The REDFIT IDC SKEDD also requires no mating plug, therefore saving on yet another component and reducing assembly and process costs.

For miniaturized components in particular, the less space required and the lower the height needed for any pin headers and other connector components, the better. REDFIT IDC SKEDD connectors only take up room for the connector itself on the PCB – there is no need for extra space above the circuit board.

The SKEDD connector is attached to the ribbon cable via insulation displacement technology. The plastic guides on the underside of the housing are longer than the contacts, thus preventing short circuits on the board underneath.

Different size thicknesses of the guiding pins provide reverse polarity protection during the simple, (and tool-free), process of plugging and unplugging of the SKEDD connector. Depending on the application, between 10 and 25 mating cycles are specified.

The plastic housing of REDFIT IDC SKEDD WR-WST connector family of products is made of halogen-free LCP (liquid crystal polymers) of flammability class UL94 V0. The specified operating temperature ranges from -25°C to +105°C. The contact material, a copper alloy, is gold-plated on the SKEDD site and tin-plated on the IDC. The SKEDD contacts on the dual row plug connector are offset with a 2.54 mm pitch.

On the cable side, the AWG 28 ribbon cable is connected with a 1.27mm pitch. Further technical features include a rated current of 1.0A per pin, an operating voltage of 100V, isolation resistance of >1,000MΩ, voltage stability of 500Vac/min, and contact resistance of maximum 10mΩ.

Multi-pluggable and detachable

“The robust REDFIT IDC SKEDD connectors are ideal for all applications that require a stable and space-saving signal connection or where a detachable connector requires tool-free maintenance. A good example is that of a debugger/microcontroller scenario,” said Daniel Kübler, Business Development Manager at Würth Elektronik eiSos.

“Previously, whenever firmware was installed after assembly, an extra socket had to be soldered to the board for that purpose – an additional component that was often used only one single time. Our new SKEDD connectors save on materials, space and costs,” Kübler added.

The REDFIT IDC SKEDD connector is immediately available from stock with 4, 6, 8, 10, 12, 14, 16, 18 or 20 pins, and in any quantities. Free samples can be requested.