Electronics Forum | Thu Oct 25 14:16:43 EDT 2007 | jsloot
Is anyone able to help me out on a typical aperture design for a castellated lead.
Electronics Forum | Thu Apr 12 09:13:41 EDT 2007 | aj
Hi all, What stencil aperture designs do you use for 0402 components? Thanks in advance for replies. aj...
Electronics Forum | Thu Oct 25 14:18:16 EDT 2007 | jsloot
Is anyone able to help me out on a aperture design for a lead free castellated part? please contact me if you can.
Electronics Forum | Wed Apr 18 09:31:24 EDT 2007 | aj
Hi, Can you advise the footprint dimensions used on the PCB ? Thanks, aj...
Electronics Forum | Tue Apr 17 17:30:09 EDT 2007 | jaimebc
Our experience with leaded paste and SAC305, for 0402's, has been positive with the following stencil designs: 1.- 5 mil thickness. 2.- Home plate design. Hope it helps.
Electronics Forum | Sat Apr 14 04:33:44 EDT 2007 | aj
the footprint is IPC standard which I have found to be less forgiving than the Jedec one for tombstoning. Enig finish - 5 thou stencil. We have historically used homeplate design but I am leaning towards 1:1. Leadfree application. aj...
Electronics Forum | Sat Apr 21 21:02:30 EDT 2007 | mika
Yes we can (at least show something that work for us) but hey, not possible to attach some pictures here... We don't have any problem with 0402:s on OK Corral... / Ps. Just get up mischief. Ds.
Electronics Forum | Wed Apr 25 16:33:09 EDT 2007 | aj
Hi All, Thanks for all the replies. I went with 1:1 (ENIG Finish) and the results were very good. aj...
Electronics Forum | Tue Apr 24 02:56:12 EDT 2007 | chrispy1963
If the PCB you are using is a HASL pad finish and is a leaded assembly, we use homeplate pads with a 5 mil stencil. If the circuit has Enig finish and is PB-Free then we use 1:1 apertures with a 5 mil stencil Either method should provide no solde
Electronics Forum | Sun Oct 28 08:32:47 EDT 2007 | davef
With a 7 thou stencil, we'd go 1 to 1. So for a more typical 6 thou stencil, we'd bump the aperture area by 1.15, maybe 1.2. We make no distinctions between 'innies' and 'outies'. Are you talking about castellations on land grid devices [ie, BCC�, L
