Electronics Forum | Tue Jun 14 16:21:15 EDT 2005 | pr
My chipshooter will not "Time out", it will try to pick 3x and then alert the operator. Which would be 3 misses per empty reel. Unless I misread his post, he said 500 ppm at the placement machine. That makes a big difference.
Electronics Forum | Fri Jul 08 05:10:55 EDT 2005 | luth
Hi Please anybody can give me the typical PPM level data of surface mount output ie after reflow. We have Yamaha pick and place machine. Like 500PPM, 1000PPM. Thanks.
Electronics Forum | Mon Jun 13 16:15:04 EDT 2005 | peter ng
Dear all, We faced some major issue in setting our company target to 500 points per million at machine throw rate.It might be caused by human error,machine,feeder,environment or other factor.We need some opition and advise on how to achieve this targ
Electronics Forum | Mon Jun 13 16:17:30 EDT 2005 | peter ng
Dear all, We faced some major issue in setting our company target to 500 points per million at machine throw rate.It might be caused by human error,machine,feeder,environment or other factor.We need some opition and advise on how to achieve this targ
Electronics Forum | Tue Jun 14 16:37:56 EDT 2005 | slthomas
You may be right. I may have read something into his post that wasn't there....
Electronics Forum | Tue Jun 14 15:03:15 EDT 2005 | slthomas
In that the machine times out and waits for a feeder refill and doesn't just skip that part and leave the space empty, it's not a defect. I have found 500ppm *fairly* easily attained in SMT depending on the board mix and how you define (1) a defect,
Electronics Forum | Thu Sep 18 12:52:08 EDT 2014 | steveO
Does anyone know a rough price estimate on a new nitrogen reflow oven that can achieve very low oxygen levels - around 10PPM. Compared to a similar standard nitrogen oven that would for example go down to 500 PPM, what is a rough price premium for a
Electronics Forum | Sat Jun 11 07:24:26 EDT 2005 | buchi79
Russ, Thanks.By the way, i already look into the reflow profile & paste storage & thowing requirement. Even i cut down the stencil life to 4 hr to avoid any moisture absorbtion. If i were to change the paste formulation, what would you propose ? But
Electronics Forum | Tue Jun 14 11:25:19 EDT 2005 | pr
Sounds a little tough to achieve. Math isn't my strongsuit but...If you run a million parts through the machine, you will have 200 feeder exhaust's (assuming 5000 per reel). So if you have your machine error out after 3 attempts/misspicks you will ha
Electronics Forum | Wed May 20 17:00:56 EDT 2009 | dyoungquist
We just placed a 56 pin QFN, 1 per board, on 10 boards and had zero defects. A good paste job, proper placement and a correct oven profile are the keys. If these are set up correctly, on larger runs your defects won't be zero but they should be le
.png)
