Electronics Forum | Fri Nov 05 14:00:07 EST 1999 | John Thorup
You know, Rich - if the only problem with your present method of delivery is that the container runs dry and the pump sucks air you can add a non-invasive low level alarm quite simply and for about $100. A suitable adjustable sensitivity capacitive
Electronics Forum | Fri Nov 05 21:41:46 EST 1999 | chartrain
Temperature vs time is what soldering is all about. The faster you run your conveyor, the more heat will have to come from the pot for a given assembly. Example: You heat the board to 200F top side through the preheaters. Eutectic 63/37 melts at 361.
Electronics Forum | Wed Nov 03 04:02:51 EST 1999 | Wolfgang Busko
Hi Wes, it may not be the same but I had a problem with one Phillips machine which started unpredictible mismounting all components about 1mm. When it occured you couldn�t get it do it right again unless you turned it down and restarted it. The servi
Electronics Forum | Mon Nov 01 19:52:47 EST 1999 | John
I have a thru-hole PCB that malfunctions when "no clean" flux is left on certain parts of the board. I have specified "the PCB shall have no flux residue". Our state side vendors (we have one offshore -they still use freon to clean) are complaining t
Electronics Forum | Tue Oct 19 16:59:58 EDT 1999 | Carol Zhang
Hi, thank you for the idea. I may try solder iron, but it much more slower since I have to solder spacers one by one. a stimpson press is used to press the spacer on the board and the edges of the spacers are rolled. Then we solder the edges to
Electronics Forum | Tue Oct 12 15:20:44 EDT 1999 | Jim Schultz
I need your help! We have been doing double sided surface mount for 4 years now. Up until 6 months ago I have not had a tombstoning problem. Since then I have a fairly high incidence rate of tombstones on the 0603 size resistors (no other parts).
Electronics Forum | Thu Oct 14 10:49:13 EDT 1999 | Dan Woodward
Andrew, As I read about issues with reworking connectors, whether they are surface mount or PTH soldered, I wonder if compliant pin pressfit connectors are being considered. They are easily assembled after all SMT without any thermal input, and on e
Electronics Forum | Fri Sep 24 09:57:54 EDT 1999 | Boca
| | Is there a standard rule/guide for the orientation of pcb's in a panel for panelised board (specially for routed panel). | | i often get this question from peeps here and i kept telling them that it depends on how it affects the process. | | than
Electronics Forum | Sat Sep 25 07:35:04 EDT 1999 | Brian
| | | | | | Bullshit | | | | Brian | | | | | Why Brian, how very eloquent, certainly proving not very British! | | MoonMan | MoonMan I could have said "male bovine excrement", but it does not quite have the same impact. Don't know the origi
Electronics Forum | Thu Sep 16 05:37:18 EDT 1999 | Earl Moon
| Can you imagine that there is a smt process using the a few chip and ic are nearly about 4,5,6,8 years old. | Antigues?? | what should you do If you are an engineer of smt process in that company. | | | | thank in advance. | | I'm s