Electronics Forum | Fri Apr 23 02:23:27 EDT 2010 | grahamcooper22
when I profile a customers oven / pcb I always try a check to see if there is basic oven temperature variation across its width....I have to say that in my experience I have never seen any significant variation on the Heller 1707EXL. Of course if you
Electronics Forum | Fri Apr 23 10:18:48 EDT 2010 | spitkis2
Graham, When performing such a temperature variation test, do you attach the thermocouples so that they are in contact with the PCB's pads or are they reading the air temperature? If they are attached to the PCB, I take it you reposition the board
Electronics Forum | Mon May 03 16:44:14 EDT 2010 | boardhouse
Hi Hoss, you can check http://www.microscan.com/en-us/Home.aspx Microscan Systems. They make all kinds of Scanners. The only affiliation I have to Microscan is they are on my Reps. line card (Innovate sales /www.innovatesales.com) . and are known
Electronics Forum | Thu May 13 13:34:15 EDT 2010 | janselmo01
We use Honeywell 3800GHD24E linear scanners for barcodes down to 3.5 mils with no problems (priced under $200). I looked a combo scanners (for 1D and 2D) that can do fine lines, but they are priced over $700. So we use a dedicated 2D scanner where
Electronics Forum | Thu Apr 22 10:21:16 EDT 2010 | remullis
I am looking for anyone who has a C5 or equivalent that has successfully been able to pass large QFP parts that require 4 lead sets. The part I am working on is 31.75mm. The vision system takes four snapshots of the part and stitches the information
Electronics Forum | Fri Apr 23 14:27:22 EDT 2010 | hegemon
I am concerned about a 'tarnishing' effect after moisture bake out that affects solderability on a batch of PCBs. This finish is new to us,and I am wondering if anyone has ideas about how to drive the moisture out of the boards without compromising
Electronics Forum | Mon Apr 26 14:40:07 EDT 2010 | blnorman
We had one product that used immersion silver plating. There were a couple of instances where we saw tarnishing, and elemental analysis confirmed the presence of sulfur. These boards did have the anti-tarnish sheets between boards, but somehow they
Electronics Forum | Sun Apr 25 11:05:58 EDT 2010 | davef
Try: * Statistical Process Control for SMT; Dr. William Messina; Datasleuths; ISBN: 0967503396; 1999 * http://www.google.com/search?q=calculate+cp+cpk&ie=utf-8&oe=utf-8&aq=t&client=firefox-a&rlz=1R1GGLL_en___US374
Electronics Forum | Mon Apr 26 09:18:15 EDT 2010 | sudhir14
Hi, friends Need your urgent help on bellow issue ....... we are facing issue of misalign of one bulky SMT transformer during the placement itself rejection @40% & after reflow rejection @5 % using SMT m/c QP242 , placing this component at end of al
Electronics Forum | Fri Apr 30 00:20:33 EDT 2010 | sudhir14
We are using QP fuzi m/c during the placement of comp. PCB is fixed & placement head is movable This component is placed at last but still we are getting the problem Comp. is placed with slowest setting also slowest comp. transfer speed of nozzle h
