Electronics Forum: wrong component (Page 1 of 45)

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

SMT component mis-aligned

Electronics Forum | Mon Feb 21 08:39:10 EST 2005 | pemnut

There are so many variables to this. It could be paste, pad size, contaminated components-pads, placement speed, component thickness being wrong in the program, dropping parts into the paste instead of placing them, component recognition ploblems. Is

Problem with shielding component

Electronics Forum | Tue Jan 09 22:33:45 EST 2007 | Guest

Dear AJ, Try removing shield ,test it, verify if it would perform as the previous runs . If not, there maybe something wrong with device or as one of our collegue mentioned that there is possibilty the your customer change some components.If the

Re: Misplaced QFP240 component

Electronics Forum | Wed May 17 12:22:54 EDT 2000 | JAX

Ramot, Without further explanation everyone here is just taking stabs at it..... Sounds normal, I'm game! Have you looked at board finish(HASL?)?? Measured paste height?? Are they always off in the same direction? If not, Handling?? What are the sp

loose component storage

Electronics Forum | Mon Nov 12 17:32:10 EST 2001 | slthomas

How do you guys store loose components for repair? Currently we just have bins with little labeled paper envelopes filed numerically with loose components in them. When an envelope goes empty, the repair person locates a reel of the same parts and

SMT component mis-aligned

Electronics Forum | Fri Feb 18 22:32:27 EST 2005 | pd not cruel

I�m surprised how un professional the so-called experts can be. After all we all had our start sometime and if you can never remember asking a un qualified question in your entire career then you probably have a bad memory. This is an open forum for

SMT component mis-aligned

Electronics Forum | Wed Feb 23 14:17:21 EST 2005 | scombs

We also have 4796's and 4791's and have had the same issues with 0402 parts.. All the suggestions listed in the last post will help quite a bit. We found our biggest problem was the board supports due to the operators using the wrong type of pins ,

Siplace component shape

Electronics Forum | Thu Nov 14 18:06:05 EST 2019 | tey422

It doesn't really matter which PnP machine you use. The correct way to cut down the variety is to use the same mfg p/n part for the whole time. Some would try to cheap by increasing the part size tolerance, but that's not the right way to do it. To

Re: Misplaced QFP240 component

Electronics Forum | Wed May 24 15:45:38 EDT 2000 | JAX

John, Would you enlighten us to what machines you are talking about. I have never heard of such things. Typically, machines map out the boards with the locations of the fiducials relative to there CAD locations in order to account for stretch. Local

Thru_hole component placement

Electronics Forum | Fri Jan 27 16:58:24 EST 2006 | solderman

Hi Ams, I often cringe when I read replys like the ones you got. I will give 'chris' the benefit of the doubt in that he is sincere in his response. However, there are people posting here with agendas to sell specific equipment. Without knowing

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