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Electronics Forum | Tue Feb 08 03:14:37 EST 2000 | Roni H.
Hi Jose, J-lead are very sesitive to coplanarity, which is the major cause for the defect you described. Other posibility is that there is not enough solder paste ; J-lead need around 10% more solder past then L-lead, You have to consider the screen
Electronics Forum | Thu Apr 12 13:23:18 EDT 2007 | slthomas
On the contrary, IPC-610 refers to flat ribbon leads in the same context as gullwing and "L" leads. I've always assumed that they were one in the same (could be wrong here...certainly wouldn't be anything new) and have never seen L or flat ribbon r
Electronics Forum | Wed Jan 12 14:43:54 EST 2000 | JAX
Doug, Jedec has this info. Here is a few for you to use. LENGTH, L+LEADS, WIDTH, W+LEADS, PITCH, AVG. HEIGHT. 1. CQFP100AC: 17.28,22.35,17.28,22.35,.635,4.92 2. CQFP100AF: 32.52,37.59,32.52,37.59,1.27,4.92 3. PQFP100AD: 19.05,22.35,19.05,22.35,.
