Hi Phil - have you investigated the use of "solder boots" to prevent 
solder getting on areas that you don't want solder on?

Dave Hillman
Rockwell Collins
[log in to unmask]



From:   Phil Bavaro <[log in to unmask]>
To:     <[log in to unmask]>
Date:   02/24/2014 11:50 AM
Subject:        Re: [TN] Laser Thru hole soldering equipment
Sent by:        TechNet <[log in to unmask]>



Three row 59 position receptacle assy

Airborn RM32209-059-541-02567-H90
Incon    AAA059A027A000EZ

These are .075" spaced pins which have gold stacking pins (.244") 
protruding through a .063" PWB.  The top of the gold plated pins cannot 
get contaminated with solder.




-----Original Message-----
From: Steve Gregory [mailto:[log in to unmask]] 
Sent: Monday, February 24, 2014 9:37 AM
To: [log in to unmask]; Bavaro, Phillip @ MWG - TW
Subject: RE: [TN] Laser Thru hole soldering equipment

Hi Phil,

Can you give a part number of the connector? They aren't PC104 connectors 
are they?

Steve 


-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Phil Bavaro
Sent: Monday, February 24, 2014 10:03 AM
To: [log in to unmask]
Subject: [TN] Laser Thru hole soldering equipment

I have a technical challenge that I need some quick expert help with....

We need to automate a thru hole stacking connector and were hoping to be 
able to use a laser soldering system.

How many of you out there actually do this type of selective soldering 
already and what equipment is recommended?

The stacking connector requires special treatment as the gold contacts 
cannot become contaminated with the solder.  We have three row connectors 
which take a long time (few hours) to properly solder even with the most 
experienced operators.  The center pins seem to be impossible for the 
automated systems to access with the solder feed systems.

Any help is appreciated.


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