Electronics Forum | Fri May 12 20:15:49 EDT 2000 | M Cox
There are a variety of options without knowing what kind of components are on the bottom side (C's and R's 0805 or 0603 or 0402) you are talking about consider the following Option 1 If bottom side has only Caps, resistors and/or Soic's then... Top s
Electronics Forum | Fri May 05 11:58:25 EDT 2000 | John Sims
We are using NR300F from Alpha. Topside board temp is 220 deg. F. We have 3 bottom side convection preheaters, and we use a foaming fluxer. The machine (except for the rotary chip wave) is almost identical to the old econopak. An electrovert appl
Electronics Forum | Mon May 08 16:01:11 EDT 2000 | John
I was running the conveyor at 3.75 when we started the discussion with Electrovert. Unfortunately, foam fluxing is a fact of life for us. Our products have open contact relays that can become contaminated by spray fluxing. Titration is our only me
Electronics Forum | Tue Apr 11 09:45:45 EDT 2000 | emmanuel
Hi Kc, As recommended by the PBGA supplier, the temperature of the package surface should not exceed 225�C during 10 seconds max so as to avoid popcorn effect. Given that some of products reflow profils are specifiing reflow temperature at 250�C,
Electronics Forum | Fri Mar 24 03:06:35 EST 2000 | Sal
guys Using a well estrablished water soluble solder paste, but having problems with tack time. Data sheet recommend a couple of hours but we are seeing problems after about 15 minutes with 0402/0603 componenets bouncing off. The printer environment
Electronics Forum | Thu Mar 09 05:44:07 EST 2000 | Wolfgang Busko
Hi Edmund, J-STD-013 "IMPLEMENTATION of BALL GRID ARRAY and other HIGH DENSITY TECHNOLOGY" should be a great help for you. Component manufacturers ( try Motorola via Internet) also give good advice. For the DFM aspects get in contact with your asse
Electronics Forum | Wed Mar 01 16:58:03 EST 2000 | Dave F
Robert: On your balls: Solder suppliers make several "standard balls" and can advise you. On your cleaner: Recycling water / direct to drain? Most batch cleaner suppliers can advise you on recycling and filtering systems to keep you out of troub
Electronics Forum | Fri Feb 25 14:00:57 EST 2000 | Bill Schreiber
Dave is correct, a stencil cleaner is a good way to go. There is an article on our web site, by Dick Clouthier, that covers cleaning misprints with various types of stencil cleaners. Go to www.smartsonic.com and click on "Recommended Reading" to fi
Electronics Forum | Tue Jan 30 17:36:59 EST 2001 | slthomas
Looking for recommendations for references on quality an process control.....SPC, process capability (cp, cpk), etc. My feet are a little wet on this stuff, but we'll be implementing soon so I'll need a reference to bail me out on occasion. You kn
Electronics Forum | Fri Feb 23 10:07:32 EST 2001 | jmlasserre
I would like to have some advise or explaination about the IPC610 spec. Page 6-51 and 6-52 concerning the solder stains on gold finguers: On the page 6-51, it's recommended to inspect the gold finguers with the unaided eye, but on the page 6-52, th
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