Electronics Forum | Wed Aug 10 17:02:32 EDT 2005 | Inds
wats the thickness of your board.. and the dimension.. I would not heat the board beyond 150deg C.. coz if the board is thick and large.. it will take a long time to reach that temp..and you will burn off your flux.causing poor solder joint. Ind
Electronics Forum | Wed Aug 10 18:14:48 EDT 2005 | rrylande
The boards I am referring to are definitely thick and large. But, on thinner smaller boards, is it OK to bring the board up to those higher temps because it takes less time? Many of the boards I am dealing with (large and small) are reaching 150-15
Electronics Forum | Wed Aug 10 16:04:09 EDT 2005 | rrylande
I am concerned about delamination and other modes of damaging the board itself. Am I mistaken to believe that raising the entire board to near reflow temperatures (during the repair of a single BGA) may damage the quality of the board?
Electronics Forum | Wed Aug 10 14:56:03 EDT 2005 | pjc
"Too Hot" is any more heat than what is needed to reflow the solder. You should have the Auto-Profile software for the machine, this will accurately monitor and record temps. There is also port for the component itself to monitor package temp. There
Electronics Forum | Wed Aug 10 14:11:38 EDT 2005 | rrylande
Does anyone have suggestions or observations on what my maximum board temperature should be when doing BGA repairs on an SRT? In other words, How hot is too hot? Somebody set the bottom heater on our new BGA repair machine to blow at 275 C, and our
Electronics Forum | Fri Aug 12 03:54:03 EDT 2005 | Mika
Does the pcba:s comes directly from the assembly line, You are going to do rework on? If faulty pcba:s comes back from, let say a customer from outside or the pcba:s has been on Your shelf for some days/weeks, exposed to open environment (humidity in
Electronics Forum | Tue Feb 24 15:40:08 EST 2015 | mbartel
I'm new in this industry and need a little direction. I have a wide verity of SM parts on a board, top and bottom. The larger components have a very nice reflow, good shine. The 0402/0201's has a dull almost cold solder look. The boards function and
Electronics Forum | Wed Aug 30 16:00:42 EDT 2000 | Dave F
Russells: You can mix the two solders you mentioned, assuming by "96s" you meant "96Sn / 4Pb". If you heat the two tin / lead alloys to a liquid state, you�ll form a tin / lead solution with properties different from either of the two solders. The
Electronics Forum | Tue Aug 23 08:43:35 EDT 2005 | SuMoTe
Hello all, I am using a led base past on a very thick board. Profiles are 260c in final zone. Currently I am using Biral "NoMelt" grease. This is not good enough for my process. After 1-2 shifts all of the grease is gone. What are you all using?
Electronics Forum | Mon Mar 16 11:40:56 EDT 2015 | swag
If it took you a long time to get it through pick and place or you had to do a lot of hand add of SMT parts, your paste can start to dry out especially on the small deposits. We've seen this time and time again. We've gotten way better at quickly p
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