No, the location pegs are part of the plastic housing and are therefore not suitable for soldering to the PCB. Only the SMT tails can be soldered – the location pegs are purely to assist with location, not board retention.

The female end of M50-9021042 will mate with the male PCB connector M50-3651042R. You would need to use a different connector from the M50 series to mate with the male connection on the end of the M50-9021042, or solder the male end directly to a PCB. The M50-3111042 should be suitable, but please note we have not specifically tested this connection. If you need further assistance, do please contact one of our Experts.

For this range, we do not specify any particular pin numbering system. You are free to use any convention you prefer, or use your own. There is no marking on the product to indicate a number 1 pin. You can also find information on pin numbering on our Support article on this topic.

These “relief” holes are for the mating male pins – either for when it is used for bottom entry, or if the male pins used are longer than the height of the connector. If neither of these situations apply to your application, then you do not need the holes under each socket in your PCB design. You will only need the two holes for the location pegs.