Electronics Forum: component missing (Page 1 of 44)

missing component after placement

Electronics Forum | Wed Jan 26 21:23:51 EST 2000 | Dennis

Hello! all Will anybody give me advice for missing componets for 0402, 0603 R or C chips? I am not gonna tell you which machine I use, but from my experience, every p&p machine has possibility for missing component after placing 400 or more componen

Re: missing component after placement

Electronics Forum | Wed Jan 26 21:38:53 EST 2000 | Dave F

Dennis: I cast my vote for: poor maintenance. Ta Dave F

Re: missing component after placement

Electronics Forum | Thu Jan 27 10:22:21 EST 2000 | JAX

Dennis, Not sure why your so secrative about what machine but I guess it doesn't matter. When you start placing 0402 & 0603 packages the difference between height and width and length gets lost in tolerance. This allows the machine to pass parts t

Re: missing component after placement

Electronics Forum | Thu Jan 27 19:14:27 EST 2000 | Dennis

Thanks! It is right that solder paste is somewhat responsible for misssing components in our case. I took a look at the board after placement and I found that component hit the paste, but no where on the board. I guesss dry solder paste (operater pri

Re: missing component after placement

Electronics Forum | Thu Jan 27 07:18:14 EST 2000 | Christopher Lampron

Dennis, The solder paste is responsible for holding the component in place pre-reflow. Several things to look at: Is the paste accurately printed on the pad? If not, there may not be enough of the component in contact with the paste to provide adiq

Help identify missing smt component

Electronics Forum | Tue Aug 08 14:07:59 EDT 2006 | Chunks

Tell him what he's won Ron!

Help identify missing smt component

Electronics Forum | Mon Aug 07 21:59:10 EDT 2006 | davef

It's inductor [choke] number 511. Probably used for EMI suppression on the monitor line. Look here: * http://www.antennex.com/shack/Dec99/beads.htm * http://lists.contesting.com/_topband/1998-11/msg00165.html *

Help identify missing smt component

Electronics Forum | Wed Aug 09 09:56:49 EDT 2006 | russ

Can you see the little dots on top of part? there should be three colored dots. If you can see then that tells you the value. Russ

Help identify missing smt component

Electronics Forum | Thu Aug 10 15:14:53 EDT 2006 | slthomas

Do we know how this part was damaged? Hopefully the issue will be resolved before placing the new part.

Help identify missing smt component

Electronics Forum | Mon Aug 07 19:41:24 EDT 2006 | Ron

I have a PC graphics card that has a damaged component and I have no clue what it is. The other two that look identical are black flat top with which looks like a mini copper coil in the middle and two leads on each side. They are the last componen

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