Electronics Forum: much (Page 171 of 627)

CP43 Placing problem on PLCC28

Electronics Forum | Mon Nov 22 09:31:29 EST 2004 | cyber_wolf

We have tried the vision both ways. Leads/body. Same issue. FYI Ken : The parts were not hitting the feeder pan on the back of the machine. I know this sounds really weird, but it seems that when we generate a program from Flexa(as opposed to FujiC

Voids

Electronics Forum | Fri Dec 03 12:12:33 EST 2004 | mruzicka

Dreamsniper, We would need much more details about your process to help you to determine the source of voids. Type of paste, how long you leave your paste on stencil, your relative humidity, reflow profile, type of oven, oven environment (N2?) and so

Soldering failure in time (FIT)

Electronics Forum | Mon Dec 13 06:21:14 EST 2004 | Peppe

I work in electronic industry and I'm interested about the standard values of FIT (failure in time or useful lifetime) of soldering. In essenze my question is : how much time can work a good solder joint, before became fail ? Exist a minimum and ma

Lead free questions

Electronics Forum | Tue Jan 04 13:01:25 EST 2005 | Brad

I have two questions that maybe someone can answer? 1. Can or should lead free components be used with standard 63/37 processes? including sn/pb pcb's? 2. Can or should sn/pb components be used for lead free process? I have recieved mixed feeling

Solder in via holes causing printing problems

Electronics Forum | Thu Jan 06 09:03:57 EST 2005 | russ

It appears that this particular PCB supplier has a non-optimum HASL process along with other issues. It is much harder to completely remove the solder out of vias on thicker boards. Looks like more air pressure was needed to remove all of the exces

MYDATA Myspeed software is total junk

Electronics Forum | Tue Jan 11 03:43:51 EST 2005 | Scott B

We have had similar problems and have abandoned use of MySpeed. I don't know what version of Mydata software you are running but have started to use the 'Hydra Preparation' function within TpSys 2.3 to arrive at optimised set-ups. Mydata advise that

Surface mount Machines

Electronics Forum | Tue Jan 25 15:05:42 EST 2005 | Mark

Could a pick and place machine from APS(out of PA) be added to the list of flexible systems for low-med volume/high mix applications? Maybe a dumb question but in my defense, never worked/ researched PnP machines before. Read a lot about the brand

AVK 3 x Universal VC2 Sequencer 8

Electronics Forum | Wed Jan 26 08:27:12 EST 2005 | pr

I am using the AVK and am VERY pleased with it. One thing to keep in mind is incoming tape and reel has to be pretty exact. The parts are going into a feeder and if the width varies too much you'll have problems. After we got control of Tape and reel

0402's and Gluing.............

Electronics Forum | Thu Feb 10 09:01:40 EST 2005 | russ

I have done that also, It does work well. One issue we had was that the mask didn't come right off during the first wash cycle since it was put on much heavier than the mfgr suggested (.01"). We had to soak them in some water first to soften it up

Touch or no touch-up

Electronics Forum | Fri Feb 11 09:32:16 EST 2005 | patrickbruneel

"Finally, going back to your original point "I have insisted if it looks good don't touch it." That's the real issue. You and your operators have different standards. [Can you imagine how much touch-up your going to have when you go to leadfree?]"


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