Electronics Forum | Wed Jul 22 13:59:52 EDT 1998 | Justin Medernach
>Have you looked into legal crap like >>proprietary aperture designs. I didn't know it >>but some of these pick and place vendors >>actually have patents on things like pad and >>aperture geometry. Personally, I think that's >>crazy and shouldn't b
Electronics Forum | Fri Jul 10 10:40:13 EDT 1998 | Todd N
Hi all, We are currently having problems with a laser-cut stencil that is electropolished and nickel plated with 9-mil openings. The paste does not release well from the apertures. We are having to wipe after every print. The board is fixtured well a
Electronics Forum | Sat Jul 11 06:56:35 EDT 1998 | Tom Denison
| Hi all, | We are currently having problems with a laser-cut stencil that is | electropolished and nickel plated with 9-mil openings. The paste does | not release well from the apertures. We are having to wipe after every | print. The board is fixtu
Electronics Forum | Sat Jul 11 06:56:03 EDT 1998 | Tom Denison
| Hi all, | We are currently having problems with a laser-cut stencil that is | electropolished and nickel plated with 9-mil openings. The paste does | not release well from the apertures. We are having to wipe after every | print. The board is fixtu
Electronics Forum | Wed Apr 08 12:29:08 EDT 1998 | Justin Medernach
| Is it just me, or does anybody else have problems with open connections on small surface mount headers and connectors? I am talking about small 20 to 40 pin devices, 25 to 50 mil pitch. We put these things on the board, the feet look like they ar
Electronics Forum | Tue Jan 20 13:33:14 EST 1998 | Justin Medernach
| This is a re-post of my previous message. I typed my Email address wrong in the other message. I am sorry for any inconvenience caused. | Is there anyone who can tell me what is the maximum allowable soldering temperature when soldering a TQFP (Thi
Electronics Forum | Thu Sep 20 09:12:28 EDT 2001 | jschake
If you were successful in running the machine in dry cycle mode, then I would expect with new squeegees that the prints would be acceptable. To give you more tangible data on what you may expect from the actual print results, maybe you could run the
Electronics Forum | Fri Sep 21 14:03:45 EDT 2001 | jschake
I have observed solder balling for all aperture sizes tested. Solder balling levels appear to be better correlated against the amount of solder paste that is underneath the 0201 component terminations after placement rather than comparing this to th
Electronics Forum | Wed Oct 03 09:26:19 EDT 2001 | davef
Whether the customer is from a large or small corporation, military or commercial, the majority of our data comes in RS274X. In theory, ODB++ seems like a good idea. It may take some time for it to actually get into the mainstream where we are. It
Electronics Forum | Wed Oct 03 17:07:52 EDT 2001 | davef
We have had soldering problems with fine pitch QFP in the past [and probably will in the future]. Several questions leap to mind: * When you took your profile on the component pads, do you profile on the pads that did not solder well? * When you say
