Electronics Forum | Thu Nov 16 09:45:11 EST 2000 | DL
Where are the experienced operators? I'm sure they would have some good input to what it is you seek. How would this program you wrote know if the operators went to the bathroom during setup? Or took break? Or even waiting on incoming parts from ship
Electronics Forum | Tue Nov 14 13:39:37 EST 2000 | Mark S
Hi All -- I'm about to design a DPAK part (case 369A-13, Issue Z)onto a PCB . The part's maximum length as given in the datasheets (On-Semi MAC4DHM) is 0.030" longer than the recommended land pattern as given in that same datasheet. (1) Has anybod
Electronics Forum | Mon Nov 13 08:24:03 EST 2000 | G. English
Richard, From your description of the IC, as Wolfgang indicates it sounds like a 20mil pitch device, the aperture design really depends upon your solder paste particle size, we use a type 3 solder paste with a mesh size of �325 / +500microns. This is
Electronics Forum | Mon Nov 06 12:19:25 EST 2000 | Tom Gervascio
I ma trying to get some information on possible causes and screening tests for PCB delamination. Is the main cause moisture absorption of PCB material or entrapped chemicals and or air in innerlayers that expand when expsoed to subsequent reflow and
Electronics Forum | Tue Nov 07 10:25:19 EST 2000 | Thomas Ballhausen
Thank you for your kind contribution and efforts in helping me. I just found out we have been talking different units; my microns were micro meter ...? So, let me get things right now: the substrate supplier confirmed the following data: Cu foil +
Electronics Forum | Wed Nov 01 08:17:39 EST 2000 | Adam
we have a variety of products which we build and manufacture and build on our site, 90% of which go over the wave solder. What I would like to know is when designing a WSC how do I know what the correct angle of the aperture is in relation to the wav
Electronics Forum | Fri Nov 03 11:08:29 EST 2000 | Phil
Hi there!!! Actually, all mentioned ideas were significantly related to the cause of tombstoning. But, based on what DL said, you have to check the placement of your 0402. Coz, based on experience, i evaluated the different variables for the root
Electronics Forum | Wed Oct 25 17:26:38 EDT 2000 | Dave F
George: Crucifixions!!! YES!!! I love crucifixions!!!! [Well I do, providing I�m not the crucifixee that is ] The pomp, ceremony, wailing, grumbling, and brat on the grill. You�ll find little sympathy here. Phil and Wolfgang make good points.
Electronics Forum | Thu Oct 26 04:05:09 EDT 2000 | JohnW
George, where exactly is the diagreement ?, is it on the point if you should be doing the SPC on the paste or is it how the data is being interpreted ? The problem with SPC is every quality bod has another idea as to how it should be looked at, Xba
Electronics Forum | Wed Oct 25 06:14:14 EDT 2000 | Adam
Guys A question regarding design rules of a WSC.We are currently running a high volume product, and as usual the design layout is as such where half the through hole connectors are perpendicular to the wave, and surprise,surpise the other half are'n
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