Electronics Forum | Tue Dec 11 19:48:37 EST 2007 | arun2382
Hi, If I were working with a 75 um thick stencil, Is there a spec. as to what the maximum value allowed on actual solder height measurements? Stencil type: Laser cut and electropolished Solder paste type: Type 4 Sn-Sb Would the measured values va
Electronics Forum | Wed Dec 19 23:53:04 EST 2007 | daxman
Hey Logan, This is an excellent resourse and should have pretty much everything you need. http://www.national.com/packaging/parts/MDIP.html#8 You get a list of a lot of different components and their pictures. You can view their dimensions and look
Electronics Forum | Tue Jan 29 14:19:29 EST 2008 | fsw
1) I am not aware of anyone making a snap on plastic housing either. 2) How can components short the connector? Are they dead shorts (components touching). If so, means bad design! 3) Could try some RTV compounds instead of kapton tape. However u wil
Electronics Forum | Fri Feb 01 08:40:12 EST 2008 | jdengler
Hi AJ, Change ALL 12 of the 1.0mm to 0.7mm. The CP 4 can only set nozzle size for S M and L not some of the 12 but all 12. 0402 usually come in 8 x 2 mm tape so you need 8 x 2 feeders or you will waste 1 component for every component you use. T
Electronics Forum | Mon Mar 10 20:14:20 EDT 2008 | davef
We'd be unhappy with features that are not in copper that is at the same level as the component pads, because of difficulties the fabricator would have in maintaining registration between the copper pads and the ink used for the features not in coppe
Electronics Forum | Wed Apr 23 21:34:24 EDT 2008 | fowlerchang
It is CSP reliability issue, which is the mobile CPU from Spreadtrum. All the tests passed and shipped to customer. They assembly them and tested but failed. After they reflow this CSP with hot air gun, some of the boards passed. We got some board
Electronics Forum | Tue May 20 12:20:18 EDT 2008 | danimalz
Does anyone have an easy way to estimate how much solder paste is applied to a smt pcb? I understand it varies on squeegee pressure, stencil thickness, and pitch of the components but I was looking for an average. I would assume that somewhere out th
Electronics Forum | Wed Jun 18 09:01:09 EDT 2008 | markhoch
We're in the process of purchasing a couple new reflow ovens. The ovens that we're looking at have a standard clearance of 1.00"(25.4mm), when using the Edge Rail Conveyor. We can pay a few bucks extra in increase that to 1.5" (38.1mm). I think that
Electronics Forum | Mon Jun 30 01:30:14 EDT 2008 | benefon
Hi Well as the feed movement is effected by means of a spring return force there really isn't that much to do apart from checking the spring tension and keeping the friction surfaces of the ratchet mechanisms of the feed sprocket and the top foil pu
Electronics Forum | Tue Jul 01 17:15:03 EDT 2008 | ronhodgson
I would like an interpretation of a solder fillet on a 5 side termination cap. (Ref: IPC-610, sec. 8.2.2.6). My question pertains to the definition of dimension F, and what constitutes the top of the fillet. Does the top of the fillet end at where
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