Electronics Forum | Fri Oct 26 07:41:26 EDT 2007 | bbl
We recently changed to an Amtech no clean paste and flux that is washable. So far excellent results. Far superior to the water soluable paste we were using. Fewer solder balls, longer life in printer, boards can be left up to 5 days and still come
Electronics Forum | Fri Nov 19 16:38:15 EST 2004 | grayman
Hi, We only use alcohol for cleaning stencil but it gives us best result even with no clean solder paste. We are using Branson.Furthermore, we have fine pitch components.Try cleaning the tank maybe there are solder accomolation in the tank or try in
Electronics Forum | Tue Jul 20 10:08:30 EDT 1999 | Wolfgang Busko
| | I recently switched from solder paste in 500 gram jars to 500 gram tubes. I did this to try to limit the time the paste is exposed to the room environment. But we have a need to clean the stencil every 4 - 5 boards which means taking the bulk pas
Electronics Forum | Wed Jul 14 11:36:56 EDT 1999 | Jimmy Strain
| | | Hi All, | | | Does any one experienced the solder on gold finger after | | | reflow. Its about 5 to 8 mils diameter . | | | We'd clean the entire screen printer, mounter & reflow as well, | | | but doesn't help much. | | | | | | | | Mr Kong..
Electronics Forum | Thu Sep 07 11:39:39 EDT 2017 | swag
Two magic bullets help us greatly with fine pitch printing: 1) nano coatings (we use a DEK product) YES it really does work 2) temperature control in the printer (AC unit). Of course good quality stencil and proper cleaning of the stencil are im
Electronics Forum | Thu Jun 16 09:13:46 EDT 2005 | russ
We use a 5 mil for 16mil pitch QFPs, Make sure that the stencil has been polished. Type 3 paste. We have used lead free no-clean, lead no-clean, and water soluble lead pastes for these packages. We set the printer for a slow stroke .7 in/min. wi
Electronics Forum | Thu Oct 23 04:19:15 EDT 2014 | garteaga
Our reflow oven builds solder on one specific panel type. It will have solder buildup inside the oven. We then end up with small solder balls on our panels. We think it may be the solder paste, the screen printer is leaving a clean wipe under the pa
Electronics Forum | Sat Jul 25 18:35:33 EDT 2015 | orbitcoms
I am looking for information regarding setting up an SMT assembly line. I have recently purchased a stencil paste printer, pick and place, and reflow oven. The main information I need is the paste selection and best finish material on the PCBs. I wil
Electronics Forum | Tue Feb 22 08:40:12 EST 2005 | JB
A couple of features on your stencil printer that should help with a couple of potential printing processes: A temperature control unit and the automatic understencil cleaning with the chemical of your choice. That alone, will reduce the chances of
Electronics Forum | Mon Oct 05 08:52:20 EDT 2015 | Maz
Wondering what are the better cleaning agents out there in your opinion? Agents that are possible for triple cleaning (hand wiping, ultrasonic and solder printer's automatic clenaing). Can't seem to find one that is able to do all three task. Any re
