Electronics Forum | Sun Oct 08 14:09:45 EDT 2000 | dtm
Ok here's the story...My company has recently started an in house smt line. (we have been mfg thru-hole for years). We hired a smt op and the most of the rest was from reading and previous experiance from other employees/engineers. Our test departmen
Electronics Forum | Fri Oct 06 15:12:17 EDT 2000 | Dave F
Alberto: Consider Dymax 911. It�s wave solderable and passes Cl ion, copper mirror, SIR, and electromigration tests. We have heard good things about Masterbond uV curables, but have not looked at them. 911 doesn�t cure very deep into the little d
Electronics Forum | Thu Aug 17 08:09:52 EDT 2000 | LarryK
We had an interesting problem this week that is along this thread. Had a project that had the same resistance value components, but one component was a 1% tolerance and the other was a 1/2%. Guess what? the operator got them mixed up. We have a first
Electronics Forum | Wed Aug 16 18:03:10 EDT 2000 | John Thorup
Hello CK Do I understand you correctly that you are reflow soldering a copper case containing a previously assembled PCA? Insulation would seem to pose a few problems that would need to be passed on by the design engineer. 1. Keeping the heat of refl
Electronics Forum | Mon Jun 19 19:08:21 EDT 2000 | Brian W.
IPC-610 Rev B: Paragraph 4.1 (page 52), As an exception to fil requirements on Table 4-1 on thermal heat sink planes plated through holes, a 50% vertical fill of solder is permitted, but with solder extending 360 degrees around the lead with 100% wet
Electronics Forum | Thu Jun 01 08:54:46 EDT 2000 | Chris May
Dear Ashok, My practice is that if you see it as a source of a potential problem, label and monitor/measure/test it. OK, so it may be a lot of work up-front, but what is the risk involved in not doing it ?? There is no grey area, do all or nothing
Electronics Forum | Thu Jun 01 08:54:50 EDT 2000 | Chris May
Dear Ashok, My practice is that if you see it as a source of a potential problem, label and monitor/measure/test it. OK, so it may be a lot of work up-front, but what is the risk involved in not doing it ?? There is no grey area, do all or nothing
Electronics Forum | Wed May 17 23:02:25 EDT 2000 | ScottM
We don't do any of this. We had our operators tested by OSHA for lead inhalation using special sniffers during the wave solder process and passed by a magnatudes in limits while operating the machine and removing dross. Our recycling agency doesn't
Electronics Forum | Fri Apr 21 23:12:35 EDT 2000 | Dean
Larry... I believe CCD offsets are not active on the IP3. Light levels and offsets are only availble in proper. Use Front Light. Use a P-pattern with bright lead, dark back background (I think #3)... The trick is to sample the lead width at the br
Electronics Forum | Thu Feb 22 04:00:02 EST 2001 | Scott B
We are increasingly being asked to store components for longer and longer periods which we know through experience leads to reduction or total loss of solderability of the parts. 1) What is the industry accepted shelf life of tin/lead plated compone
