Electronics Forum: stencil and tension and specs (Page 1 of 2)

RoHS and stencils

Electronics Forum | Fri Mar 03 14:40:22 EST 2006 | amol_kane

i think a more important issue here would be the reduction ratio. as LF solders have a higher surface tension, they do not flow as well as their leaded counterparts. therefore the stencil design may have to be changed (hence a new stencil) if the red

small and good pick and place machine

Electronics Forum | Thu Sep 05 23:18:03 EDT 2013 | feiyangniao

There is a new toy I received today: a NeoDen TM-240A automatic desktop pick and place machine! I’ve kept my eyes on this baby for a quite a while, and finally decided to make a purchase last week. The shipping was very fast: DHL from China, a total

Yamaha pick and place

Electronics Forum | Tue Apr 10 02:57:53 EDT 2018 | rob

Yes I would, most of our old Yamaha machines (before 2005) will do 30-35 microns @ 3 sigma with the fine camera option. Our Jukis with His res camera's will hit it too. You should be OK with most things after 1997 with the right camera choice (whic

Re: BGA and Land Patterns

Electronics Forum | Wed Apr 28 14:41:45 EDT 1999 | Bob Willis

| | What is the current spec for sizing PCB pads for a land grid array? How about for a ball grid array? Are there industry spec's I can reference? | | | | Thanks, | | | | Frank | | | Frank, | Refer to the device manufacturers. they are going t

board stretch and IPC -D-300G

Electronics Forum | Mon Nov 12 16:14:47 EST 2001 | davef

Yes!!! How can we assemble boards with 20 pitch when we allow 0.008� error to the master art? Excellent question!!! IPC-D-300G has nothing to do with assembler requirements. It is written by and for fabricators, so that they can be comfortable.

Re: Quick Frame and Dek 265GS

Electronics Forum | Wed May 20 10:00:00 EDT 1998 | EFData

The quick frame does work well with the DEK 265, but we feel that tensioning is user dependent and introduces variation into the process on an operator to operator basis. Also, because tensioning occurs only on two sides (instead of four) this also i

Re: Bottom side smt and thru hole

Electronics Forum | Wed May 27 10:19:43 EDT 1998 | Jerry

We have no problems but orientation does matter. Orient with longest side of component body perpendicuar to wave. In other words the same preference as with through hole DIPS. Idea is the same as for through hole, that the surface tension will ten

Re: Quick Frame and Dek 265GS

Electronics Forum | Wed May 20 12:01:16 EDT 1998 | Chrys

Have you tried the new Accu-Frame from PNC? It tensions on all four sides using an operator-INdependent mechanical scheme. It seems pretty slick. They're failry new, and don't have a frame for the MPM's last time I checked, so I haven't tried it m

Re: Quick Frame and Dek 265GS

Electronics Forum | Wed May 20 19:55:00 EDT 1998 | D. Lange

| Have you tried the new Accu-Frame from PNC? It tensions on all four sides using an operator-INdependent mechanical scheme. It seems pretty slick. They're failry new, and don't have a frame for the MPM's last time I checked, so I haven't tried it

Re: Cracking Capacitors and Solder Balls

Electronics Forum | Mon Jun 08 15:29:17 EDT 1998 | Gary Simbulan

| Earl, et al, | Boy things get old and cold around here fast. I promised more detail on my capactior problem and I thought I could drop something completely different in the same message and tell a tale of solder balls. | First the caps. We stil

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