Electronics Forum | Wed Oct 13 16:28:20 EDT 2010 | pvasquez
Hello Patejl, Many AOI machines have issues with lifted leads. I recall SAKI failed to catch lifted leads on my test PCB when I evaluated them. If you are looking for replacement equipment, check out MIRTEC. We now have four of these systems confi
Electronics Forum | Wed Sep 29 05:30:59 EDT 2010 | patejl
Hi We have a problem here in the company with AOI system, most of the problem is lifted lead on qfp components.We are using SAKI BF-planet-x. Most of the defects like mising components 603 or 402 are no problem but if it comes to lifted lead even
Electronics Forum | Tue Oct 05 12:29:28 EDT 2010 | mikesewell
It is possible to infer that the lead is lifted based on the toe fillet appearance, but it's not as reliable as say a laser or xray inspection. This is usually done by varying the light source location and or color and looking at the images resultin
Electronics Forum | Wed Sep 29 16:04:29 EDT 2010 | hegemon
In my experience, the best way to do a lifted lead inspection on a QFP is by laser height measurement. It is very difficult to consistently catch a lifted lead with only a top down camera. As you say, too many false calls, and still some escapes.
Electronics Forum | Tue Nov 30 11:51:54 EST 1999 | Wolfgang Busko
Hi all, a lifted lead (FP 0,5mm pitch) with a wire soldered to it needs proper protection against tear off. What kind of coating is appropriate, should be dispensable and fast drying. Thanks in advance Wolfgang
Electronics Forum | Tue Nov 30 18:33:05 EST 1999 | Brian W.
I have used Loctite, RTV3145, or Tak-Pak to secure the wire. As John said, the wire is usually secured to the board near the lifted lead, and usually at 1/4 inch intervals along the way. Brian W.
Electronics Forum | Tue Nov 30 13:20:07 EST 1999 | John Thorup
Hello Wolfgang Try looking in the process guides section of Circuit Technologies web site. Their recomendation is to bond the jumper wire to the board within 6mm of the lead with hot melt glue, cyanoacrylic glue or adhesive dots. John Thorup
Electronics Forum | Tue Nov 30 16:55:51 EST 1999 | Dave F
Wolfgang: Made a mess of things now, eh??? Try: Masterbond Product UV15-7TK1A Dymax 911 Ta Dave F
Electronics Forum | Wed Dec 01 06:05:33 EST 1999 | Wolfgang Busko
Hi Dave, yes messy, that�s the result of trying to use the newest chips available, getting the first shot (prototype chips) and building a couple of hundred boards and than detecting that the protos do not what they are supposed to do.As our market g
Electronics Forum | Thu Apr 28 17:02:07 EDT 2011 | grasso1976
Has anyone had success utilizing the lifted lead/ height checker feature on a Mirtec MV-7L. We recently had two separate events where the machine did not detect a lifted lead using the ic/bridge inspector. The soldering results came back with out def