Electronics Forum | Wed May 24 08:02:09 EDT 2006 | geb
Hi, Can anyone recommend a leadfree recipe for a BTU VIP98 i.e. which temperatures for which zones & belt speed? I appreciate that there will be a difference from one oven to another, along with different board sizes, but would like a good starting
Electronics Forum | Fri May 26 03:58:07 EDT 2006 | dave
Hi, We have a 5 zone oven and we use a RTS Profile. Our last zone is the zone that the reflow takes place. some basic analysis is as follows: TAL 70 secs, peak temp 210,ramp rate seems fine. A typical setting is : Z1 140 Z2 160 Z3 160 Z4 185 Z5 220
Electronics Forum | Mon Jun 12 09:42:49 EDT 2006 | mmjm_1099
Hello all, I am having an issue with my QP341 when it reads fiducials. It will be running fine than it will freeze when it goes to read a fid. When I reset the QP and it seems to work fine for a little bit than it will repeat itself and freeze up aga
Electronics Forum | Tue Jun 20 11:31:15 EDT 2006 | muse95
This has been debated several times on this forum, but I have to say the opposite of Samir. I would rather see a SnPb BGA in a Pbfree process(as long as the component can take the heat) than a Pbfree BGA in a SnPb process. There has been some mention
Electronics Forum | Tue Jun 20 19:15:19 EDT 2006 | grantp
Hi, What are your thoughts about the article saying that the lead will leach out of the solder joint to the last place to cool, creating a weak point? I have two worries about the report. First, is that we have always used tin lead solder, and le
Electronics Forum | Tue Jul 04 02:31:55 EDT 2006 | Mustang
Calling for an input from the Experts our there. Our customer is questioning the cleanliness of the no-clean product that we produced for them. We were asked to clean the board (localised cleaning) after rework (IC need to be changed due to an up re
Electronics Forum | Thu Jul 06 16:00:11 EDT 2006 | samir
Ionic Cleanliness Testing: IPC-TM-650, Test Method 2.3.25, Section 5, "Dynamic Extraction Method", is the most commonplace method in the industry to test YOUR PCBA's for cleanliness. Run it through your process as normal, and send it out for testin
Electronics Forum | Tue Jul 04 08:49:32 EDT 2006 | Piet Brandsma
Dear all, I am one of the founders of a small company doing electronics design + embedded software. Currently our prototypes are using increasingly complex smd components. When we started we mostly used atmel cpus, but now we are starting to use fpg
Electronics Forum | Sat Jul 08 14:34:27 EDT 2006 | grantp
Hi, I would go MYDATA rather than an "entry level" machine. The MYDATA low cost second hand units run the same software as their top of the line units, as well as taking the same feeders, so if you want to go faster and upgrade to a faster model, y
Electronics Forum | Wed Jul 26 10:09:42 EDT 2006 | mumtaz
Samir, why do you bring back such idiotic rubbish between two gentlemen that just happen to fall into their presidency? It is not rellavant to the questions at hand. I agree that ultra sonics can clean better but do take longer IMO. As for stencil
