Assembling

Discussion in 'General Electronics Chat' started by cameo, Jul 11, 2007.

  1. cameo

    Thread Starter New Member

    Jul 9, 2007
    8
    0
    Hi all.

    I want to set up a small assembling unit for embedded application boards with lots of smd components like caps,res,CMOS chips,very high ESD sensitive devices etc.I am new to this side of electronics.so any help would be appreciated.
    I want a suggestion on what and all steps should i take to start one.
    like:-
    the kind of soldering iron to be used,what are the ESD protection gears to be used,environment,handling.A complete guide to set it up.


    Thanks,
     
  2. Papabravo

    Expert

    Feb 24, 2006
    10,136
    1,786
    Will you be assembling multiple boards at one time, or will you do a board of one type and then do a board of another type. Automated assembly equipment is not for the casual hobbyist if that is what you had in mind.

    AFAIK soldering irons are only used in rework. For assembly you want a reflow oven.
     
  3. John Luciani

    Active Member

    Apr 3, 2007
    477
    0
    Except for BGAs, components without leads (DFN, QFN) and
    very fine pitch components SMD assembly can be performed with a fine tip
    iron, thin wire solder, a flux pen and a magnifier. BGAs, components without leads and
    parts with heatsink pads can be soldered in a toaster oven or on a hotplate.

    I am doing SMD assembly with an soldering iron. Within the next few months
    I should have a hotplate going (I need to start soldering DFN and QFN parts).

    I have placed pictures and part numbers for the tools that I use at
    http://www.luciani.org/getting-it-done/smd-hints/smd-hints-index.html

    (* jcl *)
     
  4. cameo

    Thread Starter New Member

    Jul 9, 2007
    8
    0
    that was great and helpful.thanks
    By the way, what do you suggest is the best way to handle ESD sensitive devices.I have lot of TSSOP,TQFP and other ESD chips to be assembled.
    Do you have any suggestion.As of now i havent taken any precuation for that.Or do they really matter in prototyping stage.

    Regards,
     
  5. John Luciani

    Active Member

    Apr 3, 2007
    477
    0
    For ESD I keep the components in the ESD protective bags or metal cans.
    While assembling use a wrist strap (3M 2214 or eq) and an ESD protective
    mat on your work surface (ACL Staticide 8085BM2460 or eq).

    (* jcl *)
     
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