Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronic Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

Connector for vertical daughter board to main PCB?

Status
Not open for further replies.

treez

Advanced Member level 5
Joined
Sep 22, 2008
Messages
7,602
Helped
561
Reputation
1,125
Reaction score
538
Trophy points
1,393
Location
cambridge
Activity points
76,160
Hello,
Since we have run out of room on our PCB, we need to add a daughter board to fit on the extra circuitry.
I have looked under "board to board" connector but can find nothing suitable.
Does any reader know what is the correct term for this part?...so that we can find one.

It just needs to be kind of like this..kind of...

http://uk.rs-online.com/web/p/produ...&istBid=tztx&gclid=CPOb2rrQhMUCFe_JtAodnWkAfQ


......it will fit into the main board, and then be hand soldered to the daughter board, so that the daughter board sits up vertically, taking up little room. We need it to be through hole, and it will "plug" into the main board, and be thereby soldered into.
 

ArticCynda

Advanced Member level 1
Joined
May 8, 2013
Messages
424
Helped
82
Reputation
164
Reaction score
81
Trophy points
1,308
Activity points
4,047
It all depends one the number of connections you need to make. If it's only a few then I would recommend placing a female (receptable) header on the main board and through hole right angle headers on the daughter board. This can also be a double row solution.
 
  • Like
Reactions: treez

    treez

    points: 2
    Helpful Answer Positive Rating

hobbyckts

Advanced Member level 1
Joined
Mar 12, 2015
Messages
481
Helped
88
Reputation
176
Reaction score
85
Trophy points
28
Activity points
2,457
Just verify in SAMTEC website. You can any type of connectors.
My suggestion would be go with some small pitch of 1.27mm of male connector at one board and female at the other board.
 
  • Like
Reactions: treez

    treez

    points: 2
    Helpful Answer Positive Rating

marce

Advanced Member level 5
Joined
Feb 23, 2010
Messages
2,008
Helped
621
Reputation
1,242
Reaction score
606
Trophy points
1,393
Location
UNITED KINGDOM
Activity points
13,906
0.1" pin header as shown in post #1
but I would go with the 1.27mm as suggested, unless there are critical signals.....
 
  • Like
Reactions: treez

    treez

    points: 2
    Helpful Answer Positive Rating

hobbyckts

Advanced Member level 1
Joined
Mar 12, 2015
Messages
481
Helped
88
Reputation
176
Reaction score
85
Trophy points
28
Activity points
2,457
I don't think the small pitch connectors will have problem in carrying the critical signals its about the handling. When you are using fine pitch connectors need to handle carefuly.
 
  • Like
Reactions: treez

    treez

    points: 2
    Helpful Answer Positive Rating

FvM

Super Moderator
Staff member
Joined
Jan 22, 2008
Messages
47,478
Helped
14,047
Reputation
28,349
Reaction score
12,701
Trophy points
1,393
Location
Bochum, Germany
Activity points
276,115
As far as I understand, you want a single-row angled pin header to be soldered on both sides.

The are available with 2.54, 2.0 and 1.27 mm pitch. For through-hole connection, a pitch below 2.0 isn't well suited, because the pad clearance becomes too low and hand-soldering inconvenient.
 
  • Like
Reactions: treez

    treez

    points: 2
    Helpful Answer Positive Rating

hobbyckts

Advanced Member level 1
Joined
Mar 12, 2015
Messages
481
Helped
88
Reputation
176
Reaction score
85
Trophy points
28
Activity points
2,457
After finalising the connector. Kindly inform us asking this just for knowledge sake and also don't forget to mark this thread has solved once you finalised the connector.
 
  • Like
Reactions: treez

    treez

    points: 2
    Helpful Answer Positive Rating

treez

Advanced Member level 5
Joined
Sep 22, 2008
Messages
7,602
Helped
561
Reputation
1,125
Reaction score
538
Trophy points
1,393
Location
cambridge
Activity points
76,160
were thinking of using something like this, with the long pin end soldered flat to pads on the daughter board...we will remove three central pins for the isolation barrier...we will have 6 pins on the primary side, and seven on the secondary side....the daughter board will thus solder into the main board by through hole pads.
Thus the daughter board will be vertical
http://www.molex.com/molex/products/datasheet.jsp?part=active/0022032161_PCB_HEADERS.xml
 

Mattylad

Advanced Member level 3
Joined
Sep 7, 2009
Messages
933
Helped
231
Reputation
464
Reaction score
224
Trophy points
1,323
Location
Lancashire UK.
Activity points
7,035
Look at Toby's website.

http://www.toby.co.uk/content/catalogue/series.aspx?id=4&Category=85

It will give you ideas.

Am I correct in thinking that you want the daughter board to be perpendicular to the main board?
If that is so then you want something that is right angled, if it is to be a permanently soldered connection on both boards then something like http://www.toby.co.uk/content/catalogue/products.aspx?series=THS-xx-R-RAF will do this well, they are Samtec numbered connectors so you can shop around.

Solder these to the daughter board then fit it into the motherboard and it can be soldered at the same time as other PTH components, it's a cheap & simple solution.

The straight ones you link to mean that the physical connection is relying on the bond between the pad and the laminate, movement could pull the pads off, if the pins go through a PTH hole then you should have a stronger bond.
I have used these on high voltage daughter boards in their thousands with little problems.

Or would you like to be able to unplug the daughter board for repairs\replacements?
 
  • Like
Reactions: treez

    treez

    points: 2
    Helpful Answer Positive Rating

treez

Advanced Member level 5
Joined
Sep 22, 2008
Messages
7,602
Helped
561
Reputation
1,125
Reaction score
538
Trophy points
1,393
Location
cambridge
Activity points
76,160
Thanks, theres no need to unplug the daughter board.
 

Mattylad

Advanced Member level 3
Joined
Sep 7, 2009
Messages
933
Helped
231
Reputation
464
Reaction score
224
Trophy points
1,323
Location
Lancashire UK.
Activity points
7,035
Then going for the ones in the 2nd link. If you want clearance\spacing you can also consider using different connectors, the 2.54 for signals and a greater spaced one for higher voltages.

Or if there are not many then as you say - cut a pin out.
 
  • Like
Reactions: treez

    treez

    points: 2
    Helpful Answer Positive Rating
Status
Not open for further replies.
Toggle Sidebar

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top