Electronics Forum | Wed May 24 16:19:58 EDT 2006 | inds
John, there have been quite a few discussion on Mixed Assemblies in this forum.. do a search.. you will get whole lot of information.. in addition - IF you are using Lead-free reflow profile...make sure the rated temp for Sn-Pb components is not vi
Electronics Forum | Wed May 24 16:40:40 EDT 2006 | samir
Yikes! Sounds like a hairy situation there. I've successfully collapsed a Pb-Free BGA (using a Sn/Pb solder paste), with a peak temperature of 220 Deg. C and Time Above SAC's Eutetic point (217) of 17 seconds. Beware of overcooking your smaller ma
Electronics Forum | Wed May 24 16:12:40 EDT 2006 | PWH
Hey you FlexJet users out there... We just bought a new Universal machine with a FlexJet head on it. Excellent machine. However, I'm still in the learning stage and having a little trouble with 0402's and 0603's (caps mostly but resisters as well)
Electronics Forum | Fri May 26 19:17:23 EDT 2006 | mgershenson
Hi Steve, Nope, you phrased it perfectly, and I knew what you were asking. The equipment is very similar in concept, except on the fab side it has much tighter tolerances and a different blade type. If you want to see one, check out this page h
Electronics Forum | Tue May 30 17:06:13 EDT 2006 | Board House
Hi Steve, I would say that 98 % of score shops do them dry, When the product gets back to the board house they would run the panel through a rinse dryer to get the score dust off of the Panel, Most Score machines have Vacuums built into the cutter h
Electronics Forum | Thu May 25 05:22:51 EDT 2006 | aj
Guys, We have an issue with a Board we are running at the moment. We have 3 BGAs on the board 1 Leadfree and 2 are not. We are running a Leaded Process and the LF part is not available Leaded. What do we do? I reckon that all we can do is try an
Electronics Forum | Thu May 25 12:48:53 EDT 2006 | jbrower
Howdy, I have a Mirtec MV-TH2L bench top model and I like it. You could look at Yestech. They are in that range. The reason I like my Mirtec is that it programs up easily and does what we want it to do. So far in the last 4 months that we have ha
Electronics Forum | Mon Jun 19 22:33:10 EDT 2006 | packerfan56
A number of us had past experiences at larger CMS, but we narrowed it down to Mirtec and Yestech. We had them both in our plant for a head to head test. To keep it fair our President ran both machine thru the test. At the end we picked Yestech. B
Electronics Forum | Fri May 26 14:15:16 EDT 2006 | patrickbruneel
Its it possible to post a picture from right after reflow? To see what we start with and compare the difference after 5 years. The grainy structure is not as much a concern as the growth-like appearance on the boundary of the solder. What paste al
Electronics Forum | Fri May 26 10:17:21 EDT 2006 | pjc
Here are settings for a Vitronics SMR500 oven for Indium Corp. 5.1 No-Clean Pb Free solderpaste, the product profiled was of medium thermal mass: RTS, Temp C 120, 170, 195, 248, 264, conveyor speed was 43cm/min (17"/min.) Peak temps were reached in
