Electronics Forum | Mon Jul 26 06:19:51 EDT 2010 | grld_fischer
Hello All, I am brand new to PCB design and I came across this forum while browsing. It’s very interesting to meet members here sharing information on PCB designing. I came across few articles on web regarding DFM(Design for Manufacturability) metho
Electronics Forum | Thu Aug 12 11:00:42 EDT 2010 | hegemon
Without seeing a picture, my first instinct would be first and foremost some fixturing that provides full support for your print process. After that, since you are citing bow and twist, consider that the fixturing might as well travel through the ov
Electronics Forum | Fri Oct 15 16:21:48 EDT 2010 | dyoungquist
Brian When we were looking into getting a selective solder system 2 years ago, I had factory tours at both RPS and ACE. We ended up choosing RPS. Not a big difference between them. The RPS system is a little easier to program in my opinion and wa
Electronics Forum | Mon Nov 15 02:45:15 EST 2010 | 89jeong
Hello. We encountered a SMD problem on PCB. It is that the lead of photocoupler is shifted after reflow and don't meet the minimum requirement of side joint length. I know this is a defect but what i want to hear the reason and the solution to prev
Electronics Forum | Thu Dec 09 08:24:28 EST 2010 | toddl
Hi All, We are currently looking into purchasing a new SMT line to meet our production needs. We want everything new, from the board loader to the reflow oven. I am looking for real world pros and cons of our proposed choices. All the equipment in t
Electronics Forum | Fri Jan 07 03:34:12 EST 2011 | rpatel28364
Hi Smarts We are having difficulty in reflowing BGA wiht ROHS process on double sided board. We have tried profiling un populated board and profile is meeting upper spec of solder paste. but our customer is saying they have to heat up BGA and board s
Electronics Forum | Wed Feb 23 12:42:28 EST 2011 | davef
If we understand correctly, your SMT solder connections remelt when passing through the wave solder machine and your QA-people don't like it when that happens. It's nice not to remelt this solder, but as long as the board meets your acceptance stand
Electronics Forum | Fri Apr 01 03:02:59 EDT 2011 | grahamcooper22
starting point with zone settings would be, 100 / 160 / 200 / 225 / 260 deg C...but you'll have to check the exact profile on the pcb with a reflow profiler....making sure you meet the paste spec and making sure you don't heat any devices up to quic
Electronics Forum | Mon Sep 26 14:05:04 EDT 2011 | scottp
I agree that class III is overkill for most applications and the customer needs to pay for it if that's what they want. It's also true that class III doesn't assure things won't fail. Life expectancy is mostly due to component and material selectio
Electronics Forum | Mon Sep 26 16:43:18 EDT 2011 | action_101
I am happy that you work in a shop that can build boards right the first time on a consistent basis. Unfortunately, I would say that every place I have been at, we have had a hard time meeting class III standards day in and day out without some kind
.gif)
