Electronics Forum | Tue Feb 28 03:33:29 EST 2006 | snowcaj
To set warm-up time,which standard should we select and how should we measure? Thanks!
Electronics Forum | Tue Feb 28 13:46:28 EST 2006 | slthomas
Assuming you're using DOM and shelf life to determine what's good and what's not, you just have to know 1)the rate at which you use it up, 2) how much shelf life is left, and 3) the rate that it goes bad when not refrigerated. From that you can tel
Electronics Forum | Tue Dec 21 13:27:47 EST 1999 | Vince Whipple
Charlie: As far as setting up a spray fluxer.. Are you spraying no-clean, voc free, water soluble? What you would want to do is to run a blank pcb through the fluxer and pop it out before the preheaters. Visually inspect for variations in uniformit
Electronics Forum | Thu Oct 08 12:02:15 EDT 1998 | Bernardo Mendoza
I need to set a cleanliness limit for our incoming boards. I know that some people use 14-10 microgr. sq. in. But how can I determine what is best for me. Can anybody tell me if there's a standard for this. Right now we are using an Alpha Ionograph
Electronics Forum | Mon Jan 21 06:58:41 EST 2019 | kiransahu
Without PCB layout, not much would get done. It is a ubiquitous need across industries; Industrial, consumer, military...Everywhere you look, there are chips soldered to PCBs to create a final product for the end customer. But where did we all learn
Electronics Forum | Fri Oct 09 14:29:07 EDT 1998 | Chrys
| I need to set a cleanliness limit for our incoming boards. I know that some people use 14-10 microgr. sq. in. But how can I determine what is best for me. | Can anybody tell me if there's a standard for this. | Right now we are using an Alpha Iono
Electronics Forum | Fri Oct 09 23:17:05 EDT 1998 | kallol Chakraborty
| | I need to set a cleanliness limit for our incoming boards. I know that some people use 14-10 microgr. sq. in. But how can I determine what is best for me. | | Can anybody tell me if there's a standard for this. | | Right now we are using an Alph
Electronics Forum | Tue Jan 16 16:59:39 EST 2007 | realchunks
Pallet angle is usually pretty good. Lead length is also another good thing to keep as short as possible. Air Knives don't work that well. Also check your board. Make sure you have solder resist between each and every thru-hole pad. If the board
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 | Tue Feb 19 19:33:44 EST 2002 | davef
Since yer talkin� $$$$, non-quantitative measure do not apply. I understand someone told you to do payback. But, we don�t use payback for multiyear projects. Regardless, the analysis is similar. For each machine, set-up a multiyear spreadsheet li
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