Electronics Forum | Fri Dec 16 01:36:53 EST 2005 | tk380514
i would assume when the PCB planner and customer would specify what "surface layer type"they want but this section is always empty but i have found that out yesterday that we only use ENIG and not FLASH GOLD, which is good to know........ but it see
Electronics Forum | Wed Dec 14 22:43:46 EST 2005 | 00629
Im from a semiconductor manufacturing company and we received feedback from customers about cover tape tearing on 16mm heat activated cover tapes...the manifestation of the tear is that it starts from both sides of the seal and continues towards the
Electronics Forum | Thu Dec 15 04:26:20 EST 2005 | Rob
Hi Liza, We tend to see it on the larger plastic tape sizes & lower volume parts - such as smd connectors, fine pitch reeled IC's, BGA's etc. We don't tend to get it on high vol parts such as logic, 8 & 16bit micros, v-regs etc. Could this be du
Electronics Forum | Thu Dec 15 07:15:22 EST 2005 | stefwitt
After re-reading your posting, Liza, I�m doing yet another correction to my reply. Are you using the same taping machine for all your components or could you narrow it down to one taping machine? Is it a fully automated taping process or more likely
Electronics Forum | Wed Dec 14 23:32:19 EST 2005 | jhernan9
Hi, I'm having a lot of problems with BGA's shorts, we are using 0.005" stencil aperture 1 to 1 (0.014)", the paste is centre (I can not measured the height)was verified using electronic microscopie, the placement is centre (I'm using local fiducials
Electronics Forum | Thu Dec 15 11:06:05 EST 2005 | Samir Nagaheenanajar
You might wanna try a small reduction in your stencil aperture. For example, for a 30-mil pad go 26-mil square aperture with 8 to 10-mil radius on your corners. Also, look at your designs. Is there enough resist between your pad and ball? Another
Electronics Forum | Thu Dec 15 01:21:42 EST 2005 | bvdb
We own a Fuji IP1 with all the manuals, etc. but can't figure out how to inch the tray robot. We can inch the X, Y, Z, Q axis and the SX and SY axis. All the axis auto zero OK (including the trays), but when I push the "4" key to inch the trays we
Electronics Forum | Thu Dec 22 10:37:38 EST 2005 | Amol Kane
Hi Steve, We just got the retrofitted machine and i was trained by PVA on Pathmaster. I just wanted to know if many other ppl were using it so i can post any questions/comments on the programming aspect. The coating we will be using is envibar, and
Electronics Forum | Fri Dec 16 04:41:30 EST 2005 | tk380514
A day and half is a life time for our solder paste, Almit V14L... but then we dont have in-line solder paste printers, we have micro BGA stencil that wont work with anything but new solder paste, 0.8mm pitch and pad size is 0.3mm, stencil thickness
Electronics Forum | Fri Dec 16 15:23:04 EST 2005 | Csabee
I think the Samsung SM320 is quite good machine..But I suggest that must assembly feeder cover to the feeder trolleys, because without that the tape feeders are not safe for the heads. Feeders should broke the head. chip components wrong light sett
