0.8mm pitch board-to-board connector - Page 1
Forum section: electronics / projects

author: msr
author_rank: Regular Contributor
timestamp: September 26, 2014, 01:22:59 am
content: Hi,Followingthis topicwhere I was looking for a wire-to-board connector for power, now I would like to ask for your help on choosing a board-to-board connector with the following requirements:- 3~4mm height- 0.8mm pitch- ~20pins- polarizedThe thing is: Im currently using DF12 from Hirose which are 0.5mm pitch connectors (3mm height) but I have had some issues during soldering resulting in short circuits, so Im considering using bigger pitch. On the other hand a polarized connector would be more appropiate to avoid misinsertion.The best alternative I could find so far: DF9 from Hirose (it's 1mm pitch, less pins, but polarized)Do you know any connector that fit these requirements?

author: nctnico
author_rank: Super Contributor
timestamp: September 26, 2014, 10:38:25 am
content: Look at Tyco FH connectors. I don't know if they offer a 4mm solution though.

author: msr
author_rank: Regular Contributor
timestamp: September 29, 2014, 09:10:58 am
content: nctnico, thanks for the suggestion but those connectors' height start from 5mm.Still searching...The best find so far: 3M Pak 8http://solutions.3m.com/wps/portal/3M/en_US/Interconnect/Home/Products/ProductCatalog/Catalog/?PC_Z7_RJH9U5230O73D0ISNF9B3C3SI1000000_nid=CMRRQM7TVJitWK7G49LP38glMSC1Z684K5blNot cheap, tough.

author: sacherjj
author_rank: Frequent Contributor
timestamp: September 29, 2014, 11:21:55 am
content: We have used theMolex Slim Stackfor height restricted board to board. These are 0.8mm and 1-1.3mm total mated height. I don't believe any of them are polarized. We used board orientation to do this. It was the only solution for our needs with a 1mm board separation.

author: ovnr
author_rank: Frequent Contributor
timestamp: September 29, 2014, 11:44:08 am
content: How about TEco's Fine-Stack series? 24p, polarized, .8mm pitch, 3mm total board separation when assembled. $1.80 (total) for both connectors (100pcs pricing).Links:Part 1,part 2.No pictures on the internets, but I'll post a render here in a second.Edit:Shitty renders here.

author: msr
author_rank: Regular Contributor
timestamp: September 29, 2014, 01:59:19 pm
content: Guys, you have been very helpful, thanks!ovnr, regarding durability, do you have any words?Since they will be used in a prototyping platform they may be mated/unmated several times (~100 at least) without compromising the quality of the connection.Are you aware of the differences between the fine-stack and fine-mate series? They seem identical, but the last one is more expensive so it should have some "special sauce".(actually theydo not seem identical)

author: sacherjj
author_rank: Frequent Contributor
timestamp: September 29, 2014, 02:57:48 pm
content: Quote from: msr on September 29, 2014, 01:59:19 pmMating expected life is generally in the data sheet for a connector.

author: ovnr
author_rank: Frequent Contributor
timestamp: September 29, 2014, 03:01:16 pm
content: Quote from: sacherjj on September 29, 2014, 02:57:48 pmAnd if TEco actually released actual datasheets, that'd be wonderful...Quote from: msr on September 29, 2014, 01:59:19 pmDurability: Never used these exact ones myself. If you're careful it should be fine, but if you have the option I'd strongly suggest making a cable for the prototyping - just make up a board with connector footprints and a FFC connector, then slap that on between them - easy peasy probing and fiddling.And no, the Fine Stack and Fine Mate series are not compatible.Edit: Sorry, didn't read your post properly. If you're making a product where the "end user" (be that actual lusers or hobbyists or whatever) will be plugging and unplugging all day long (as opposed to people who know what they're doing), you'll need to pay a lot more attention to what parts you're using. I'd probably end up buying a few different connectors and doing a lot of testing.

author: msr
author_rank: Regular Contributor
timestamp: October 01, 2014, 02:32:40 pm
content: Quote from: ovnr on September 29, 2014, 03:01:16 pmYes, that's it, I'll have to try a couple of connectors before the final decision.In the meantime I'll be using DF9 from Hirose. 1mm pitch, less but enough pins for what I'm doing at the moment. Mouser sells them cheap (in Portugal, we avoid Digikey as much as possible, the taxes are not nice)Although I haven't been successful soldering 0.5mm pitch connectors by hand, probably I will get back to that pitch when the platform goes into production.Thanks for your help!