Electronics Forum | Wed Jul 30 00:47:10 EDT 2014 | matusov
Hello gurus, I am a hardware designer with a small company. We are about to send a new PCB for fabrication. This board uses dozens of tiny QFN, DFN, and similar packages. As a final check I have been going through the datasheets of all these parts t
Electronics Forum | Mon Apr 26 21:29:34 EDT 1999 | Dave F
| Hey - remember the evaluation of VOC-Free fluxes that I promised a couple of months ago? well, I finally scrounged up the time to remove the propreitary (board name and number) info from the report. So it's ready. I posted it in the SMTnet libra
Electronics Forum | Fri Feb 13 08:41:45 EST 2015 | emeto
Hi, I have MV-7xi from Mirtec. Mine is equipped with the best camera they have as well as telecentric lens which give you very good resolution and view. Machine handles very good most of the defects in SMT. However, when we go to the solder joints i
Electronics Forum | Mon Feb 16 12:33:58 EST 2015 | ianatvadatech
Hey Syed, I've been running the MV-9 for just over a year. We shopped around very extensively (two APEX shows) before switching from yestech to mirtec and we bought two of the best systems they had to cover the four lines we run. Two systems are fa
Electronics Forum | Mon Sep 29 20:06:22 EDT 2008 | davef
One common definition of a SMD footprint is: A typical SMD footprint, is composed of: * Solder lands (conductive pattern) * Solder resist pattern * Occupied area of the component * Solder paste pattern (for reflow soldering only) * Area underneath th
Electronics Forum | Thu Sep 06 01:12:43 EDT 2001 | Dreamsniper
Hi, What's the maximum track width that is allowed to be attached to a 0805 component land pattern. I have a 70 mil x 45 mil Land for my 0805 and is attached to a 50 mil wide track with a length of 300 mil to 1500 mil. Components affected are mostly
Electronics Forum | Sat Feb 14 19:35:51 EST 1998 | C. Lao
Mr Lao We have some specialist knowledge on this subject and offer both equipment and services for these tests. My first recommendation is that take coupons manufactured by your PC Fabricator and then samples at each manufacturing stage: Bare coupon
Electronics Forum | Mon Feb 22 05:39:58 EST 1999 | Scott Davies
We are currently using circle, cross and double-cross(#) fiducial patterns with SiPlace equipment. Most of the problems seem to occur when, in the case of a HASL fiducial mark, a PCB is topside reflowed, goes away for thru-hole and comes back for bot
Electronics Forum | Thu Oct 06 22:34:09 EDT 2022 | poly
Melbourne, Australia. I'm pretty sure there aren't any other universal machines here so I'm totally happy with Zoom / Skype etc video chat. Basically for a little bit of training and technical support, how is PSV / barcodes meant to work, should I
Electronics Forum | Wed Feb 07 11:19:23 EST 2001 | CAL
Precision parts and precision boards are nice for the initial evaluation but are costly for routine monthly accuracy tests. I know for a fact all the Siemens machines leaving Germany are evaluated with precision parts and board and placements are eva
