Electronics Forum | Fri May 05 11:11:05 EDT 2000 | Stefan Witte
The placement defect rate also depends on the shape of the components. 0402's have a higher defect rate than 0805's for example. If the board is very dense populated, chances are that a misplaced part knocks off another part and all of the sudden the
Electronics Forum | Mon Jul 23 20:15:48 EDT 2001 | davef
A minimal ventilation rate is 0.05 cfm per square foot, as recommended by the 1998 International Mechanical Code. However, this may not take into account other potential building contaminants from such sources as propane forklifts, which require a mi
Electronics Forum | Fri Jan 14 16:48:40 EST 2000 | Steve Thomas
O.K., folks, I know this is a loaded question, but I've been asked to find the answer, sooooo: What is an acceptable defect rate in ppm for a surface mount process, assuming that each component has the potential for one defect. This would include de
Electronics Forum | Tue Oct 06 00:51:31 EDT 1998 | Tony B
| Does sombbody know what DPM rate a good and reliable SMT assembly line (incl. solder paste print, assembly and feflow soldering) has? | Chris, It may be helpful if you could translate DPM into a meaningful phrase as many people (myself included) m
Electronics Forum | Wed Mar 18 22:26:06 EST 1998 | Aaron C. Wedemeyer
Introducing flat rate pricing to SMT Solder Paste Stencil repair. 15 x 15 or smaller = $125 - Larger stencils will be repaired for only $150 + shipping and handling. Visit our site today for a free cost comparison - We will prepare an analysis sho
Electronics Forum | Fri Oct 05 08:11:32 EDT 2001 | PeteC
Steven, Batch vs. conveyorized is all about production rate. The conveyorized tend to deliver higher production rates. The conveyor runs at a constant speed. You must use a "profiler" device to establish a recipe for the product you want to solder.
Electronics Forum | Tue Dec 18 15:05:58 EST 2001 | blnorman
What is the maximum allowable thermal ramp rate for wave solder. We have a "short" machine used for selective soldering. To get the boards up to temp, we need to exceed our normal 2�C/sec. Are there any IPC documents governing this process? Anyon
Electronics Forum | Thu Oct 31 03:16:30 EST 2002 | swalter
I have read a number of discussion relating to cars purchases and it maintenance . As far as I know , in cars, you drain your money on that piece of luxury , however, for production equipment , you are investing to grow your money , we are all argui
Electronics Forum | Thu Jul 24 00:39:40 EDT 2003 | MA/NY DDave
Hi, If the failure rate is a lot higher than all the other components including ones similar to the 0603's than you won't be making a big deal. It is all relative. My only thought is to run a DOE with 0603's from different manufacturers and see if
Electronics Forum | Mon May 24 06:04:09 EDT 2004 | johnwnz
Nitro, I msuggest you get your oven manual out and start reading!! it depends on yoru machine, the point of injection, how many zzones it's designed to cover (some only inject for reflow) what your inward flow rate is, what yoru exhaust rate is and