small pcb interconnect options help

[fvnktion]

Hello,

Im currently trying to design a pcb that is roughly .500x.500 " in size and i need to interconnect via a header or some other form. I can not find any breakaway headers under 2mm in pitch. I would like to use something more on the scale of a .050 " or 1mm pitch. It would seem that there is a reason that they are not manufactured in these sizes??

Does anyone have any recommendations on getting a maximum number of i/o interconnects to a board this size?? An edge connector, cable, header??

Any recommendations would be great!

Thanks

 

[hjames]

You wouldn't be able to build a cheap board with much smaller pitch thru-hole parts - the solder pad around each hole on most standard processes requires ~20 mils of clearance. AMP does have a line of 50mil wire-to-board connectors (the ribbon cable would be of the 25mil variety), but they're pretty new.

The easy way is to just use a laminated flex cable and a surface mount ZIF connector. 0.5mm pitch (single sided) is pretty common. If you're going for cheap, the cable can be directly soldered to the board.

 

[fvnktion]

Thanks for the input! Ill look into those options