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Thread: Connector for the CFAL12832C-W-B1 OLED Module

  1. #1
    Join Date
    2001/04
    Posts
    10

    Connector for the CFAL12832C-W-B1 OLED Module

    Can you let me know the mating connectors for the CFAL12832C-W-B1? I have never seen a 27-pin, 0.6mm pitch FPC before. Can you give me a link to the mating PCB connector?

  2. #2
    Join Date
    2001/03
    Location
    Spokane, Washington
    Posts
    4,092

    "TAB" or "COF" style direct solder connector information

    The connector on the CFAL12832C-W-B1 is a "TAB" (tape automated bonding) or "COF" (chip on flex) style flex tail mated with a "COG" (chip on glass) display construction.

    This style of connector is designed to be soldered directly to corresponding pads on your PCB by using a hot-bar soldering machine. High volume contract manufacturers will be familiar with this type of construction and its assembly methods.

    There are "bondmaster" machines made by APE that are designed for prototype, rework or repair work:

    http://apecorp.com/j.htm

    We have had good experience with the APE Bondmaster, and their price is very reasonable ($US4K at last check). Here are some other possible solutions:

    http://www.fancort.com/hotbar/hotbar.html
    https://www.manncorp.com/hot-bar-sol....php?auto=done
    http://www.cherusal.com/tm-111mkiii.htm

    The process is as follows:

    1) the pads on the PCB are tinned

    2) the tail is aligned to the PCB using the alignment holes or visually

    3) the tail is held in place relative to the PCB with kapton tape

    4) the bondmaster head is lowered, applying pressure between the tail and the PCB

    5) the bondmaster is "cycled", which means it heats up to the point of melting the solder and then cools down

    6) the bondmaster head is raised.

    It is possible to hand solder the tail to the PCB. Great care must be taken since the conductors of the tail are completely exposed in the area where they are soldered, as shown in this image:



    Kapton tape should immediately be used to secure the tail to the PCB, so the joint cannot flex and break.
    Last edited by CF Tech; April 27, 2011 at 04:54 PM. Reason: fix ampersand entity

  3. #3
    Join Date
    2009/10
    Posts
    1
    I don't know by what measure 4K is reasonable. My slice toaster performs a similar feet and it was only $10. If you have experience prototyping surface mount components, you shouldn't have any trouble. I was tinning the pads, holding the tail in place with pliers, then using a hot-air rework gun. I have since found that simply using a soldering iron with a chisel tip has resulted in more reliable results.

    I have attached two pictures. One is a carrier board I etched for breadboarding and the second is the display being driven by an xMega. The display looks dull in the second pic because flash was used but it is actually very vibrant.





    You may notice small holes above the connector pads on the prototype pcb. Those are the alignment holes that match up with the tail. I like to stick copper wire through from the backside to help me keep the tail aligned while I solder.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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  4. #4
    Join Date
    2001/03
    Location
    Spokane, Washington
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    Great job on the PCB.

    Pics look awesome.

  5. #5
    Join Date
    2010/05
    Posts
    1

    See my board

    I've made a little board to this OLED. All solder made by hand, with a simple solder iron. See the pictures:









    If you likte it, visit my blog

    http://rusticengineering.wordpress.com

    Thank's
    Last edited by forrequi; May 19, 2010 at 05:57 PM.

  6. #6
    Join Date
    2001/03
    Location
    Spokane, Washington
    Posts
    4,092
    Wow! That looks awesome. Great job

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