Electronics Forum | Fri Nov 16 08:47:04 EST 2007 | rgduval
Fractured parts that we've seen at reflow in the past are related to trapped moisture in the part, out-gassing at temp, and fracturing the part. I have seen this on ceramic resonators in the past; don't know why this type of part seems prone to this
Electronics Forum | Mon Jun 27 10:25:29 EDT 2005 | Paul
Hi Erik, looks like there's not much appetite for this debate on this forum. Possibly because not many use them and aren't in a position to confirm or deny what we know. We use our pumps 6 days a week, 24hrs a day so it's a very dynamic proc
Electronics Forum | Fri Jan 19 12:17:57 EST 2001 | slthomas
Thanks Dave. Talked to a few people at APEX this week and if nothing else, had my frustration reduced some. Of course I made sure I talked to mfg. people and avoided the design guys like the plague. ;) I actually picked up a copy of 785 a while bac
Electronics Forum | Tue Sep 20 14:03:53 EDT 2011 | russw
We don't have the equipment to check specific gravity, we just assume what's on the bottle is correct and we've never had a problem. The stone sits in an open chamber, so there really isn't any pressure to check. When we vary the air flow, the foam
Electronics Forum | Mon May 27 18:51:17 EDT 2002 | harotec
Hi Yngwie Have you got a reflow oven yet. If not, forget about complicated profiling with test runs or reflow trackers. We've got a nice oven with integrated temperature-feedback system. You build any profile you want and the oven will adjust its hea
Electronics Forum | Mon Jan 08 18:58:27 EST 2007 | Mike F
Normally someone would have replied to tell you to do a search of the archives. I've read at least 4 or 5 different threads dealing with baking out PWB's, but none were for this special material. First, have you contacted the manufacturer of the PW
Electronics Forum | Fri Oct 05 11:59:54 EDT 2001 | mparker
I am looking to learn of possible causes and solutions for the following problem. A potential customer is demanding that I use a saponifier in the aqueous wash, he has lab test results of former CM's products that leads him to believe it is necessar
Electronics Forum | Fri Aug 31 13:51:33 EDT 2012 | joeherz
First off - There should be no issue with washing your OA/water soluble boards with the other customer's no clean units provided that the recipe being used has been validated to effectively clean each product. If your supplier is using a batch syste
Electronics Forum | Sat Oct 15 01:47:09 EDT 2022 | auriga2001
I might need some help to explain what I'm seeing here. The first 3 look like before pictures. They seem ok. The last 3 look like after pictures. It doesn't look like fracturing joints as would be a normal failure for vibration test, more like it rea
Electronics Forum | Wed Jul 27 09:58:05 EDT 2011 | davef
Pressure printing systems Conventional stencil printing techniques have fundamental limitations as regards paste handling: The volume of paste available for printing is limited, so frequent replenishment is necessary Paste is difficult to c
