Electronics Forum | Fri Nov 03 09:41:17 EDT 2017 | davef
On your question about reliability ... " Is there testing we can do (environmental stress chambers) with which we can see the long-term effects of flux residue on solder joints?" Sure, incompletely activated low residue flux residues are potentially
Electronics Forum | Thu May 04 14:33:26 EDT 2017 | sumote
If you are doing contract manufacturing you may need to get permission, or at least disclose the foreign material you are introducing into the solder bath. I looked at it and decided the potential problems it could cause were not worth the time it wo
Electronics Forum | Fri Jun 16 03:50:42 EDT 2017 | youth
I think you should first learn the principles of the circuit, understand the components and understand their function, skilled operation pcb design software. There should be a lot of such tutorials on the web, and you can learn from yourself. Of cour
Electronics Forum | Thu Apr 20 02:27:11 EDT 2017 | pavel_murtishev
Mile, Please tell me more about your soldering process: - Are soldering process parameters the same for all three pins? - Is unsoldered pin connected to thermal heavy copper polygon? - What is your board surface finish? HASL? - Sn/Pb or LF process?
Electronics Forum | Wed Apr 26 06:09:12 EDT 2017 | ajaytyagi
Hi, Pl let me know about opinion/experience whether thick film chip SMD resistor which is MSL-1 Required to bake before being usedon SMT line. I want to use SMD resistance spool which is around 2 yeasr old kept at 25 deg room temperature at around 4
Electronics Forum | Mon Jun 05 10:42:28 EDT 2017 | philc
I guess it all depends on volume. If you are talking thousands of PCB's, then automation is best, if possible. Otherwise, hand-soldering them post-production is the obvious solution. How about bill-boarding them? That way, they would fit on the land
Electronics Forum | Wed May 03 09:19:28 EDT 2017 | azdback
One of the pieces that attaches the ballscrew on the y table to the movable rail broke. Has anybody successfully replaced the ballscrew on the 500 t table? It does look labor extensive, not having done that before, it appears to be something better l
Electronics Forum | Tue May 23 03:40:20 EDT 2017 | bukas
the problem I had with pump was that turbine intake was eached by alloy. when I repaired intake, it was a irregular hole about 32mm in diameter, mechanics welded piece of plate with a 24mm hole (that was a factory size) we had to reduce pump speed fr
Electronics Forum | Tue Aug 01 07:24:39 EDT 2017 | emeto
Zac, how about the following: 1. Thermal profile for the flux 2. Is your wave leveled? - If you see better joints on one side, you should probably level the machine 3. Just for elimination, do you have another flux, that you could spray on a board
Electronics Forum | Tue Jul 18 08:18:44 EDT 2017 | emeto
Sergey, we understand your dilemma very good. Still the key words in your post are "having a capable system" and this is not given with that old machine. You should probably research the Samsung Tsvetan is talking about - it has 4+1 placement heads
