Electronics Forum | Tue Aug 02 22:49:55 EDT 2005 | davef
IPC-A-610D Section 5, shows a variety of photographs of: * Good lead-free solder connections * Lead-free soldering anomalies Hot Tear / Shrink Hole is one such anomaly. This shrinkage effect appears primarily on wave-soldered joints, but can also
Electronics Forum | Wed Aug 17 16:09:08 EDT 2005 | pjc
A skilled hand-soldering operator can easily do the rework. Applying liquid flux and raking the iron tip across the leads removes bridges. Removal and replacement of QFP-64 can be done manually. This is of course for very low volume of this type QFP-
Electronics Forum | Fri Sep 09 15:03:46 EDT 2005 | Amol
Hi, I am running a circuit board that needs a part to be put on it after cleaning and before conformal coating. the only problem is that after cleaning and hand assembly of the part, there is a thin whitish residue in the ckt board that one can see w
Electronics Forum | Tue Sep 20 10:32:25 EDT 2005 | slthomas
I would say it depends on the process requirements for the board and the reliability requirements as has already been mentioned. If you do two-sided reflow you might allow for fewer rework attempts, for example. If it's a medical device you might on
Electronics Forum | Tue Sep 20 23:12:38 EDT 2005 | darby
Several suggestions. Your hands may be tied but here goes. 1. Doctor your stencil so that pads are not shared etc and reduce the apertures more that what you would normally. This may stop one pad wetting into another etc. 2. The use of a Pb-free sol
Electronics Forum | Fri Oct 21 08:03:40 EDT 2005 | Mike
Hello Darby, because of the machine configuration it depents very strong on the feeder configuration and on the board if the 3 heads more give you so much more CPH. Realistic it will only be 1-2000 CPH more in realistic operation. On the other hand
Electronics Forum | Thu Oct 27 08:27:57 EDT 2005 | Adam
Hi We are trying to solder a a contact whose base material is stainless steel, this is then nickel striked with a gold plating of upto 3 microns. We are trying to hand solder this to a standard 1.6 FR4 PCB with a HASL finish. We are seeing problems
Electronics Forum | Wed Nov 02 01:53:41 EST 2005 | pavel_murtishev
Hello, Thank you for answer. We are using second hand machine. What do you mean saying that �stencil is not height on all 4 corners�? Does it have some inclination between corners? I mean that three corners of stencil are matching with PCB fine and
Electronics Forum | Sun Nov 13 21:23:03 EST 2005 | jaciesla
Hello, I am looking to change from hand soldering to a dip soldering method. The board is double sided (only one side has components though) and has all through hole components currently. I would just like to know if dip soldering would be the best c
Electronics Forum | Tue Nov 15 19:31:54 EST 2005 | eeltec
>I/OPERATION ==> >1/RUNNING ==> but any command that I try gives an E100 error and in the left side of the monitor a square with: Conditions Initialized Waiting Emg stop (in red) org incmp (in red) Interlock (in red) data comp Use Vac
