Electronics Forum | Mon Nov 12 01:18:29 EST 2007 | sin4d
Hi, ALL I experience some QFP with wetting issue on the heel of the lead. There is no fillet wetting on the heel which causes reject bt the customer, but not all the QFP. Could anyone pls help what is the causes of this problem, it is due to oxidati
Electronics Forum | Wed Sep 05 08:10:45 EDT 2007 | davef
Questions are: * Do not judge the quality of a solder connection by the shineyness or color of the solder connection. Do you have smooth and unform flow, no pitting, and good wetting to the lead and the pad? * What is the temperature of the leads of
Electronics Forum | Wed Jun 07 17:58:27 EDT 2023 | linux
are the ics jumping in the tray. if not seated correctly the lead lift at pickup. mostly lift lead causing by handling.
Electronics Forum | Thu Feb 08 08:54:56 EST 2007 | jhaviland
groundplane not heating properly.. Is it a J leaded IC? sometimes these get bent slightly in the packaging and sit just far enough off the board to cause solder problems.
Electronics Forum | Thu Aug 25 08:26:48 EDT 2005 | DannyJ
Hi MM, Off the cuff, is it possible that the QFP leads were not coated? I'm by no means an expert in QFP manufacturing, but I do believe that there is a coating which enables solderability that is added to the leads somewhere in the process. I ha
Electronics Forum | Tue Dec 04 16:00:42 EST 2007 | 18424
Hi, I was wondering if any of you operators/users have experienced any reflow solderability issues with any of the ATMEL QFP components with in the last three months. Leaded or lead free processes?
Electronics Forum | Wed Oct 01 10:59:13 EDT 2008 | realchunks
Wouldn't it be cheaper to by quality parts? Most repair operators can solder a QFP 208 with a regular soldering iron, eyes closed and hands behind their back. If you are just touching up the leads because of co-planer leads, a regular iron is all
Electronics Forum | Tue Oct 05 02:57:41 EDT 2010 | patejl
Reese is right. We use algorithm our AOI but the make it find liftead lead on qfp or such... it took me all day to set program and even then some defects pass so that is why Im asking..
Electronics Forum | Mon Dec 22 19:45:55 EST 1997 | Kevin Searfoss
Looking for equipment or a company that performs lead straightening on fine pitch QFP's. Any info would be appreciated.
Electronics Forum | Tue Dec 23 15:07:18 EST 1997 | Kevin Searfoss
| Looking for equipment or a company that performs lead | straightening on fine pitch QFP's. | Any info would be appreciated.