HARTING has unveiled its new har-flexicon series of discrete wire-to-board connectors and terminal blocks that deliver greater PCB performance and density with robust connectivity. These miniature components offer design and manufacturing flexibility, whatever the termination technology, that make possible a lower all-in cost of the PCB. These har-flexicon SMT (Surface Mount Termination) components for pluggable single conductor wiring of I/O signals are available in two main pitch categories.
1) traditional 3.5 mm–5.08 mm sizes: These have 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;
2) 1.27 mm and 2.54 mm sizes: These fill the evolving niche for finer pitch. The 1.27 mm with IDC – a simple, fast, reliable tool-free termination for single wires – caters to the radical miniaturization of 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 are full SMT design and include a robust hold down to assure secure fixing to the board, a primary concern for the designer specifying SMT connectors.
The SMC (through hole) termination connectors come in a box with 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 device side components 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.
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