Electronics Forum | Thu Sep 03 15:43:18 EDT 1998 | Tim Flanagan
I need advice for locating 23 Gull wing LED's (all in a straight line) in the x,y, and z axis for a SMT PCB. It is a Hewlett Packard LED (P/N HMLA-QH00-01). The application uses a CCD to detect the position of a ball which floats in a resevior for
Electronics Forum | Tue Sep 22 12:52:56 EDT 1998 | Bernard Mulcahy
| | | | | Has anyone been able to link a Mydata with the Pads Software. The book say's it can not be done but someone told you can?????? Could someone put me on the right road. | | | Thank You | | | John Kirby | | John, Mydata themselves will supply
Electronics Forum | Wed Nov 11 10:08:38 EST 1998 | Magnus
| | Hi, | | We are having problem with yield loss due to electrical fail. Further investigation shows that the failure is due to solder bridging under BGA. Has been there any study or experience on how this could occur and what we can do to prevent
Electronics Forum | Tue Aug 25 12:50:24 EDT 1998 | Lance Smalley
To see if the MV will recognize the marks, in the binary mode, when setting threshold (binary level), raise up the level until the edge of the mark starts to degrade. Write down the number. Lower the level until the fiducial starts to "bloom". Wri
Electronics Forum | Sat Aug 22 16:07:31 EDT 1998 | Manuel Cornejo
| | Require a conductive adhesive - either isotropic or anisotrpic - which can be used for 100micron oitch devices. | | Must be resistant to solvents such as MEK and acetone. | | Cure below 150C, with possible potential for rework of the conections.
Electronics Forum | Tue Aug 11 18:44:22 EDT 1998 | Dave M
| Good day. We have just purchased a HOLLIS POLYCLEAN SMT Machine. We did not receive a manual and for installing the machine, we need the indications for the ventillation system: ie the number of CFM for the blower. | We would greatly appreciate i
Electronics Forum | Tue Jul 28 02:13:57 EDT 1998 | Bob Willis
There is a procedure for profiling on my web site that may be of use to start with www.bobwillis.co.uk | We are about to run our first BGA devices and would appreciate some confirmation on a few points. | First some details: | PCB & Device: | ======
Electronics Forum | Mon Jul 27 21:10:10 EDT 1998 | D.Lange
| Hi, | Need some advice on how to eliminate or reduce the solder on finger that we are having right now. So far what we understand is that 90% of the problem is due to the reflow process where solder traps in vias causing explosion when subj
Electronics Forum | Thu Jul 23 11:39:16 EDT 1998 | Russ Miculich
Are you using a HASL board or an organic protection on the pads? This will help determine as to whether paste is necessary or just a very active/tacky flux should be used. Tight process control will also help in the reflow oven. Many users don't wan
Electronics Forum | Thu Jul 23 12:54:18 EDT 1998 | Brad Kendall
| I am considering of Philips FCM for the next production. | But I have heard a rumour saying this machine is not capable for checking the lead polarity due to the laser scan system. | i.e. SOT might be populated in wrong direction. | Can somebody ad
