Electronics Forum | Wed May 07 17:52:36 EDT 2008 | wayne123
I have these boards that are a four layer FR4 material, we had been running them for quite awhile with no trouble, and then they started delaminating, I checked my Reflow oven profile and I was barely hitting the temps required for our paste, we then
Electronics Forum | Fri May 23 18:55:20 EDT 2008 | gregoryyork
This is one of the biggest mistakes with the Lead Free process. We have all listened to the 'industry experts' and followed their advice and unfortunately got it wrong. Keep the dwell times (dependant on alloy selection) the same as Leaded so you are
Electronics Forum | Fri Jul 11 10:32:10 EDT 2008 | JH pbf
Got to agree with CK and Patrick. A very brief career history: 1992 Engineering Apprenticeship 1994 Job as a Temp, placing components in a local electronics firm 1996 Made perminant Process Tech through experience gained 1998 A year selling solder a
Electronics Forum | Mon Oct 06 15:17:12 EDT 2008 | davef
Q1: You say that 0.008" of "slop" is un-doable; hence, the reasons for our failures. Any basis for that statement? A1: We're not even considering the accuracy of your placement machine. We base our comments on the gap between the hole and the connec
Electronics Forum | Wed Oct 22 06:06:54 EDT 2008 | stanyserrao
1CA64011 and 1CAFE011 UsedBy Display 1CA??011 Cause The Vision_type in part data is expressed using hexadecimal notation ("??"). If "??" equals 1E, 64, 78, 79, AC, or FE then boundary detection could not begin because the nozzle was bent.
Electronics Forum | Mon Dec 08 17:06:59 EST 2008 | boardhouse
Hi MGL, Couple things to ask, have the boards recently been changed to Rohs builds? STD FR4 to High TD Laminate. Check the stack-up the board houses are using. Just about all Rohs laminate has Resin starvation issues when used in single ply co
Electronics Forum | Thu Dec 18 14:54:28 EST 2008 | hegemon
We evaluated OMRON, YesTech and Mirtec. Mirtec and Yestech close at #1 and #2. Omron was a little more distant due to programming time required. We are a high volume high mix OEM builder, so speed of programming was a heavier weighted score than co
Electronics Forum | Tue Aug 18 17:49:16 EDT 2009 | dyoungquist
Is there a limit to how many times a pcb with components can be run through a reflow oven before the components start to degrade? Example: We load the SMT components on the bottom side of the pcb and run it through the reflow oven. Next we load the
Electronics Forum | Mon Nov 09 15:58:09 EST 2009 | cellis
The biggest thing you will not get is the vision system like this. The 7722 has flying vision for most components and an upward looking vision camera for large components and BGA's. The older Quads had the Quad Align system which is laser vision.
Electronics Forum | Tue Mar 23 07:35:42 EDT 2010 | jooh
Since I'm new to the forum I probably ask previously answered questions (that I have not found) but I would be grateful if someone could clarify this for me. I'm in R&D at a company where we design low volume (1k-10k) fairly complex PCBAs for our pr
