Electronics > Projects, Designs, and Technical Stuff

small ISP connectors

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Amper:
Hi!

Im looking for a connector type i can use on small pcbs with 6-pin ISP. The board in question is 20x30mm and almost exclusively surface mount looking for the smallest "footprint" i can get. To this point the ISP connector is the single bulkiest component, which is sort of sad.

A friend of mine usually uses micromatch for this purpose but they are still 5mm tall which would be alright if i cant get anything more suitable but id still like some other alternatives.

Pogo pins are also a possibility but as this thing is a semi prototyping board that has to be re flashed in the field i dont like this idea here.

Footprint should be small but it should also be mechanically sound enough to survive being treated sort of rough as a normal pin header would be.

Open for any suggestions!

Fred27:
Does Tag Connect fit your requirements? It's basically pogo pins but with locating holes.

ataradov:
Tag-Connect requires a huge board area free of stuff.

I really like 1.27mm pich connectors - https://www.ebay.com/itm/2-3-4-5-6-7-40P-Female-Sockets-Male-Pin-Header-1-27mm-Pitch-Connector-Double-Row/183945905661. They are small and the actual connector can be surrounded very closely by other components on the board, as long as they are not tall.

Amper:
well yes, but just having smaller pitch is not what im after. I need surface mount with compareably small print but most importannt is build height, 5mm is to much, 3mm would be ok, 2mm ideal. The connector should not purtrude above the other surface mount components as this will ruin the formfactor of a 100% surface mount board. Tag connect looks pretty much ideal, is there something with less pitch though? and smaller positioning pins? In case i can arrange it on a board, maybe i could just print a jig that will use a board edge for allignment. Thats not the exact thing im after, but at least close.

Im still looking for some connector that will stay connected with no external force, maybe even snap in. It will be interesting for other problems as well where pogos will be not permanent enough or to bulky, like board stacking connectors for example.

ataradov:
For small connectors that would retain the cable, you need to look at FFC/FPC style connectors. They can be pretty small, but figuring out the cable part is a pain.

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