Electronics Forum | Tue Sep 16 11:42:35 EDT 2008 | slthomas
If support is a concern, don't forget that any support provided by equipment manufacturers will most likely (certainly with Juki and Universal) require registration of the machines at a cost to you of probably $2k-$5k per machine. Some used equipment
Electronics Forum | Tue Sep 16 09:25:49 EDT 2008 | trynders
I had a vendor change thier lead finish from tin/lead to a SAC305. We built up several assemblies before we realized the change. The reflow process is a standard leaded profile peaking at 220 C. What are the reliablity concerns with mixing the tin/l
Electronics Forum | Tue Sep 16 16:24:54 EDT 2008 | vladig
Well, as we are talking about lead finish, I don't think the question was about BGA. :-) AS far as the intermnetallics is concerned, then you are right, it might require a bit more heat delivered to the joints, but it also could be perfectly fine. Th
Electronics Forum | Tue Sep 16 16:30:49 EDT 2008 | ck_the_flip
Vlad, yes, he made no mention of a BGA, but I thought I'd just throw it in there. Many people are concerned with the "backward compatible" scenario - running RoHS parts with a Sn/Pb solder paste. The scenario's a no-brainer with most components, bu
Electronics Forum | Tue Sep 16 12:39:41 EDT 2008 | stepheniii
You will have to make new programs for the Panasonic. (afaik) But you can use the Mydata programs as centroid data for the Panapro. Load it into Excell using space as the delimiter. Copy column B onto column A. cell A1, move cells up. Sort by column
Electronics Forum | Tue Sep 16 14:03:41 EDT 2008 | mi
Stephen, When I port from Mydata to AOI machine, I use an Excel macro that lays out data into 5 fields/columns per line as: X Y angle P/N Reference Designator Is this the same for Panasonic? I'll also ask Panasonic operator if this is what he cou
Electronics Forum | Fri Sep 19 16:25:43 EDT 2008 | davef
While it might not be what you prefer to do, but rather than converting directly from Mydata to Panasonic, can you simply use a Gerber converter to produce centroid information and then use the centroids to program your Panasonic machine? Search the
Electronics Forum | Tue Sep 16 10:51:09 EDT 2008 | rayjr1491
Here is the scenario: We are using Lead Free Type III paste. We are using 5 Mil EFORM stencils The part we are having issues with is a SOT883. Stencil design is the SMALL PADs are 10x16mil Large PAD 14 x 24 mil. We are getting some see-sawing of th
Electronics Forum | Tue Sep 16 13:40:20 EDT 2008 | ck_the_flip
Try reductions in the "Y direction". For the SMALL PAD, go from 16-mils to 14-mils, and on the large pad, you can play around with reductions on the 14x24mil pad...or try mesh pattern. You'll be well with area-ratio guidelines with both approaches,
Electronics Forum | Tue Sep 16 16:47:32 EDT 2008 | wavemasterlarry
All this nonsence talk of ratios drives me nuts.you guys should be do-ers and quit reading all these whitepapers. I fancy myself as be-ing from that school of hard knocks.No math or ratios needed for that. Speaking of hardknocks I'm in the Texas area
