Electronics Forum | Mon Apr 28 18:34:17 EDT 2003 | Brian W.
We typically do not try to pick up and hand placve chip resisstors and capacitors. The risk and cost is too high for components that are a penny or less. We take into consideration that on many of our components, someone will have to test them to v
Electronics Forum | Tue Apr 29 02:48:18 EDT 2003 | chrissieneale
Thanks for your replies guys, i definately will look into the retapeding option as on further inspection of the line yesterday i found that some of the reels have a crappy plastic on top of them that our feeder literally just pulls off, exposing lots
Electronics Forum | Tue Apr 29 15:45:09 EDT 2003 | davef
We have mixed bar solder from alternate suppliers in our wave soldering machine. Issues that you need to address before changing your solder supplier are: * Assure that the alloys are the same. In this, consider imaginative people may be reporting
Electronics Forum | Tue Apr 29 15:59:20 EDT 2003 | babe
First I would have your solder bath analyzed by a certified lab. Secondly I would get an analysis from each supplier that you are speaking with on their solder bar. The lowest price does not necessarily mean the best product and vice versa. Alot of p
Electronics Forum | Tue Apr 29 16:42:29 EDT 2003 | razor
Not to sound too much like a clich� "The solution to pollution is not dilution." I would not be one for adding yet another variable to my solder pot. If your PPM is double digit, control of solder defects can become tedious, who's to say which cause
Electronics Forum | Wed Apr 30 14:35:35 EDT 2003 | clarkk
Hello all, We have received reports from two customers about electrical leakage on pcb assemblies that used Kester paste #HM531 (63/37) and washed with Kester 'Bio-kleen' saponifier and DI water. The leakage is such that when the boards receive power
Electronics Forum | Wed Apr 30 20:33:15 EDT 2003 | davef
Haaaa!!!! Yes, we�ve seen things like that. We found that a high input impedance amplifier worked fine in a room with a controlled environment and worked poorly in the sweat-shop portion of our plant. We were using good ol� WS609, straight water w
Electronics Forum | Fri May 02 12:41:16 EDT 2003 | Chris Lampron
Hi Chris, I had worked for a flex circuit house for 10 years. You should be able to follow your solder paste guidelines for times and temps. You may want to consider pre-baking the flex if it is made with Kapton. Kapton is Hygroscopic and will delam
Electronics Forum | Tue May 06 09:38:41 EDT 2003 | blnorman
We use both labels and lasers to mark our boards. Since implementing the lasers, the downtime attributed to bar code labels on those lines have dropped to virtually nothing. We still have problems with the labels wrinkling during reflow making read
Electronics Forum | Tue May 06 10:14:18 EDT 2003 | k_h
A typical machine will have around 100 feeder slots. Manufacturers use the slots differently though, use 8mm feeder counts as your basis. Siemens, for example has 40 slots but you can get 2 (or 3) 8mm's per slot giving you 80+ 8mm feeders, while a Sa
