Elgin, Ill. – HARTING has unveiled the har-flexicon series of discrete wire-to-board connectors and terminal blocks that are said to deliver greater printed-circuit-board (PCB) performance and density with robust connectivity. These miniature har-flexicon SMT (surface-mount termination) components for pluggable single conductor wiring of I/O signals are available in two main pitch categories ‒ traditional 3.5- to 5.08-mm sizes and 1.27- and 2.54-mm sizes.
Traditional 3.5 mm to 5.08 mm sizes offer standard contact spacing and screw or push-in (spring cage) wire termination and SMC (surface mount compatible) termination to the board. The device side connectors can be directly wired to create a horizontal or vertical terminal block with high vibration and shock resistance. If high current is required, the 5.08 mm size is rated up to 17.5A for the terminal block and 15A for the two-piece connector.
The 1.27 mm and 2.54 mm sizes meet industry demand for finer pitch connectors. The 1.27 mm with IDC – a reliable tool-free termination for single wires – meets the need for miniaturization of the PCB termination. The 2.54-mm size includes a connector and terminal blocks with 2-12 contacts and push-in termination as well as a positive latching system between male and female components. Both 1.27 and 2.54 sizes provide a full SMT design and include a robust hold down to ensure that it is securely fixed to the board. The SMC (through hole) termination connectors come in a box with a dry bag (MSL 2a) while the full SMT connectors are delivered in tape and reel packaging (MSL 1). For automated assembly, PCB makers can place and reflow har-flexicon interconnects along with all other board components – capacitors, resistors, integrated circuits, etc. – in a single SMT or SMD production run as opposed to separate steps using reflow and wave solder processes, said HARTING.