Electronics Forum | Thu Nov 11 17:53:59 EST 1999 | Jeff Tamagi
I have read in some magazine articles that there is poor signal to noise ratio of RF devices when no-cean solder is used. The frequecies used exceed one Mhz? Is this true?
Electronics Forum | Fri Nov 12 10:40:17 EST 1999 | Dave F
Some under-the-hood automotive people have moved from no-clean to clean, and I mean CLEAN, recently. Hmmmm Dave F
Electronics Forum | Thu Nov 11 17:49:54 EST 1999 | Jeff_Tamagi
Do I have to tin gold lead devices? Can I use indium? Can I use lead-free Can I use tin-free
Electronics Forum | Tue Nov 16 18:10:15 EST 1999 | Richard
Michael, IMP Printed Circuits in Adelaide ( Australia) have an old XY table / Digitiser head system that just needs a Maher controller to get it up and running. Their email is imppcb@codan.com.au attention Bob Armstrong. Regards Richard
Electronics Forum | Thu Nov 11 10:55:32 EST 1999 | KenF
Hi, could anyone tell me the maximum size of an SMD ceramic capacitor that can be assembled on a copper based substrate reliably? The SMD will be reflowed on the copper substrate. The main concern is the CTE mismatch between the ceramic capacitor and
Electronics Forum | Thu Nov 11 11:38:39 EST 1999 | John Thorup
Try the Professional SMT Component and Land Pattern Book from SMT Plus. Link below. John Thorup
Electronics Forum | Wed Nov 10 23:05:16 EST 1999 | Jin See
Hi, I am looking around for methods of getting the iron tip temperature profile as the thermocouple wires can not be used for that. Any suggestions?
Electronics Forum | Wed Nov 10 19:44:13 EST 1999 | Charley Qin
Hi, Dave Which brand of solder paste are you using? Is it Alphametal UP78 family? If so. According to our experience, you could try other solder pastes without any change on stencil aperture. Maybe it could work. Good luck.
Electronics Forum | Tue Nov 09 20:16:31 EST 1999 | Thomas
10% slump). I am finding out their test std used but I think those lab test is different from real reflow as the heat transfer rate of reflow oven is much higher. Any one care to share your views?
Electronics Forum | Wed Nov 17 07:20:10 EST 1999 | robert oertner
Sounds like you are running your conveyor too fast. Check your profile and see if your board is getting hot enough "max 125c on topside prior to hitting the wave. If so then slow it down, if not then increase your preheats and slow it down.
