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Electronics => Beginners => Topic started by: Arek_R on May 31, 2020, 05:42:55 pm

Title: USB-C
Post by: Arek_R on May 31, 2020, 05:42:55 pm

Hi I'm trying to get USB-C going on my projects.
I would like to use low pinout version and prefereably one that has the footprint for Eagle provided.
Sparkfun uses one like that: https://www.sparkfun.com/products/15795 (https://www.sparkfun.com/products/15795) and files are available so I can extract the connector as either library or design block with all the needed resistors(to configure CC lines).
Unfortunatelly I was unable to find actual USB-C connector they're using, there is no actual manufacturer number provided.
When I asked on their forum they gave me this: A40-00118-A52-12
But when searched I get no results on google and octopart.
How do I find this connector?
All websites like RS/FARNELL/MOUSE/DIGIKEY have the parametric search engines not very well suited for such connectors.
Thanks.

Title: Re: USB-C
Post by: JackJones on May 31, 2020, 06:20:21 pm

I found the datasheet: https://www.bsc-elec.com/Uploads/pro/USB-C-Female-Connector.9.2.pdf (https://www.bsc-elec.com/Uploads/pro/USB-C-Female-Connector.9.2.pdf)

Someone in Reddit asked the same question a while back, there are some ali/ebay links in there. https://www.reddit.com/r/AskElectronics/comments/axo015/anyone_know_where_to_get_the_sparkfun_usbc/ (https://www.reddit.com/r/AskElectronics/comments/axo015/anyone_know_where_to_get_the_sparkfun_usbc/)

These USB connectors tend to be very generic, you can probably find one that fits the exact footprint pretty easily.

Edit: Quick look at LCSC gave me these that look identical (might want to triple check the actual footprint):

https://lcsc.com/product-detail/USB-Connectors_Jing-Extension-of-the-Electronic-Co-Jing-Extension-of-the-Electronic-Co-USB-3-1-C-16PF-SMT2-0Type_C167321.html (https://lcsc.com/product-detail/USB-Connectors_Jing-Extension-of-the-Electronic-Co-Jing-Extension-of-the-Electronic-Co-USB-3-1-C-16PF-SMT2-0Type_C167321.html)

https://lcsc.com/product-detail/USB-Connectors_XKB-Enterprise-U262-16XN-4BVC11_C319148.html (https://lcsc.com/product-detail/USB-Connectors_XKB-Enterprise-U262-16XN-4BVC11_C319148.html)

Title: Re: USB-C
Post by: langwadt on May 31, 2020, 06:20:54 pm

why not use a connector you can easily get and make a footprint for it?

Title: Re: USB-C
Post by: Arek_R on May 31, 2020, 07:11:39 pm

Ebay link says does not ship to UK  |O
Yes it's generic but there are a lot of mechanical features that make those incompatible with each other.
I checked what ebay serves when I search for "16P SMD USB-3.1" and I found even friendlier USB-C with only 6 pins:
https://www.ebay.com/itm/10pcs-lot-6-Pin-SMT-Socket-Connector-Micro-USB-Type-C-3-1-Female-Placement-SMD/264454493339?hash=item3d92b7549b:g:XLEAAOSwq~9dbV0y (https://www.ebay.com/itm/10pcs-lot-6-Pin-SMT-Socket-Connector-Micro-USB-Type-C-3-1-Female-Placement-SMD/264454493339?hash=item3d92b7549b:g:XLEAAOSwq~9dbV0y)
I might make footprint for this one myself but I need it to be available within UK, not going to wait 1 month for delivery from china.
Similar one from LCSC:
https://lcsc.com/product-detail/Others_Korean-Hroparts-Elec-TYPE-C-31-M-17_C283540.html (https://lcsc.com/product-detail/Others_Korean-Hroparts-Elec-TYPE-C-31-M-17_C283540.html)
I didn't want to make the footprint myself because I couldn't find any connectors that didn't had full crazy 20pin types and they also have very unfriendly drawings diffiuclt for footprint creation or even don't have any recommended footprint dimensions - would need to figure it all out myself based on dimensions of the connector itself.
Example from RS, they don't even let you specify number of pins:
(https://www.eevblog.com/forum/beginners/usb-c/?action=dlattach;attach=998797)
[attachurl=1]

Edit: Whoops the nice 6 pin one I found doesn't contain D+/D-  :(

Title: Re: USB-C
Post by: Mechatrommer on May 31, 2020, 07:50:32 pm

Quote from: Arek_R on May 31, 2020, 07:11:39 pm

Similar one from LCSC:
https://lcsc.com/product-detail/Others_Korean-Hroparts-Elec-TYPE-C-31-M-17_C283540.html (https://lcsc.com/product-detail/Others_Korean-Hroparts-Elec-TYPE-C-31-M-17_C283540.html)
I didn't want to make the footprint myself because I couldn't find any connectors that didn't had full crazy 20pin types and they also have very unfriendly drawings diffiuclt for footprint creation or even don't have any recommended footprint dimensions - would need to figure it all out myself based on dimensions of the connector itself.

its all there in the datasheet linked (mechanical drawing) i made the footprint (Altium) the day i made the order based on the drawing. when the thing arrived, the footprint works the first time even on a diy pcb.

Quote from: Arek_R on May 31, 2020, 07:11:39 pm

Edit: Whoops the nice 6 pin one I found doesn't contain D+/D-  :(

Edit: Whoops! yeah. the 6 pin is only for charging circuitry. you need the higher pin count for data transfer. maybe like the one JackJones linked. the drawing is also there.
https://datasheet.lcsc.com/szlcsc/1811101520_Jing-Extension-of-the-Electronic-Co-C167321_C167321.pdf

Title: Re: USB-C
Post by: Arek_R on May 31, 2020, 08:28:57 pm

Yeah only for charging applications.
Might use it for my TP5100(1S/2S 2A) charger board.

I guess I will need to make the layout myself and wait for arrival from LCSC with $10 delivery...

PS is there a way to export footprint from EasyEDA to Eagle?

EDIT: Ok it's happening:
(https://www.eevblog.com/forum/beginners/usb-c/?action=dlattach;attach=998840;image)