Electronics Forum | Thu Dec 20 08:00:50 EST 2007 | avalancher
Many years ago, we used to double print. The way we did it was with a rubber squeegee set to do a flood stroke, followed by a return cleaning stroke with a metal squeegee. Why?! Well, this was in the days before Laser etch, and because the chem bat
Electronics Forum | Fri Jan 08 01:24:34 EST 2016 | sunnyduan
What's the best company for low volume, quick > turn around PCB assembly? > > Why do you choose > their service over others? What's the cost > ballpark for 10 3"x3" boards assembled? > What's the best company for low volume, quick > turn arou
Electronics Forum | Wed Jan 06 10:25:15 EST 2016 | swag
I've done more if this that you can possibly imagine. I've designed 100 or more router fixture plates. It's not always easy that's for sure. We use a Cencorp router. It does O.K. but definately a little tricky to get nice cuts in the flex only ar
Electronics Forum | Tue Feb 23 09:51:35 EST 1999 | Steve Schrader
| Hey all- | | My question is this: My stencil printer operator has said that he has to | wipe our 6-mil stencil each pass to get the paste in the 20-mill pitch | aperatures for a QFP to release well. We are using Amtech NC-559 type 3 | paste with
Electronics Forum | Thu Feb 11 09:45:06 EST 1999 | Dave F
| | | Helo, | | Is it common for actual print height of solder paste to exceed the stencil thickness. For example If the stencil is 6mill thick and the actual height of the print is apx. 10 or 11mill. What causes the paste height to be greater t
Electronics Forum | Tue Mar 27 15:53:13 EST 2001 | johnw
RW, I've been printing glue by stencil for a while. Like the other guy's say there are various method's and material's that you can use but then your printing paste so the ideal is for as little change as possible to the method's your already using.
Electronics Forum | Tue Mar 27 15:53:14 EST 2001 | johnw
RW, I've been printing glue by stencil for a while. Like the other guy's say there are various method's and material's that you can use but then your printing paste so the ideal is for as little change as possible to the method's your already using.
Electronics Forum | Wed Nov 15 11:00:35 EST 2000 | Finepitch Services
"depending on your pad design"... To me, Wolfgang gave you the biggest secret... I guess he meant the real pad width you get on your board is the start point. Get the average measurement in mils and then cut it from the sides at the percentages he h
Electronics Forum | Tue Jun 11 14:58:45 EDT 2002 | Chris Lampron
Hello Sean, We are currently using a Pin in Paste process to mount some through hole relays. This particular board has 72 relays per. We have cut the stencil to overprint the hole. By putting a small amount of solder in the hole to flux the lead, th
Electronics Forum | Fri May 21 15:50:41 EDT 1999 | John Thorup
We are running a number of boards with 8-10 25 mil PQFPs on board. Our process is mature with at least 3 years experiance and statistically few opens on the QFPs. Our beloved purchasing department has chased the almighty $ and changed FAB vendors
