Electronics Forum | Wed Jun 21 22:07:09 EDT 2000 | Jason
We are going to try double sided reflow for the first time. Can we use the same 63/37 paste on both sides? The board also has bare copper pads i'm pretty sure. will this present any challenges? The bottom side has a QFP on it. Should it stay on?
Electronics Forum | Tue Mar 03 03:38:46 EST 2020 | toki
Hello everyone, I would like to know what is the current trend in SMT line setup in terms of assembling both side pcbs at one go. Is it dual lane or single lane double line set up? Thanks
Electronics Forum | Wed Mar 04 03:32:55 EST 2020 | tamasmagyar
Hi toki, First of all it depends on how much the company would like to invest in such a methodology. Second of all, why would you make a line to be single lane - double line one after each other, is that automotive / medical standard, not to handle
Electronics Forum | Thu Jul 20 17:01:26 EDT 2000 | Bob Willis
Here is some further information on SDSRS process, but please purchase a copy of the report from t he SMTA as all the money goes to charity. In the UK the SMART Group raised over �3000 for the homeless. SMTA have been raising a lot of money for the G
Electronics Forum | Thu Mar 05 03:01:06 EST 2020 | leo_dektec
Hello toki, The only factor you need to consider is the production yield. If the volume is really high, need two smt line to run continually to meet the production, then u have no choice. If the volume is not that much, then u can consider below smt
Electronics Forum | Thu Dec 14 04:02:40 EST 2017 | spoiltforchoice
"I would expect that any intelligent feeder > enabled machine would pull the correct part no > matter where it is placed on the machine (not > forced by the program)" > > this is true, but you > have to tradeoff the setup time vs production > t
Electronics Forum | Tue May 14 21:07:03 EDT 2002 | ianchan
Hi mates, Yes, the lighter mass is a valid reasoning. in addition to the "lighter (mass) than thou" point of view, 1) the first reason for mounting active Parts (eg. IC, QFP, LGA...) is to minimize the temperature exposure of the Parts to a single
Electronics Forum | Fri Oct 26 11:37:27 EDT 2001 | Dave G
You could start by putting together a matrix of P/N's vs product. This will tell you which parts are common with most of your jobs. These would then become part of a fixed feeder setup that would stay on the machine. (These will probably be mostly R'
Electronics Forum | Wed May 13 07:24:12 EDT 1998 | Sherry
Does the temp. profiles used to reflow double sided pcb's through a IR oven on FR4 board material have to be re-established if it is changed to polyimide? Boards will be baked out prior to assembly. any response would be most appreciated.
Electronics Forum | Thu May 14 04:11:33 EDT 1998 | JACK CHEN
| Does the temp. profiles used to reflow double sided pcb's through a IR oven | on FR4 board material have to be re-established if it is changed to | polyimide? Boards will be baked out prior to assembly. | any response would be most appreciated.
