Electronics Forum: counting backwards (Page 1 of 1)

Anyone facing QFN package crack problem ?

Electronics Forum | Wed Nov 28 16:08:38 EST 2007 | jmelson

I've been using Xilinx TQFP's in the 44 and 144 lead sizes with no trouble. I don't even bake them before reflow and have never had any problem. The Xilinx parts are certainly NOT sensitive, I could not break one with my bare hands if I tried (I ha

Wave Soldering Thick PCB's

Electronics Forum | Mon Jan 28 08:07:44 EST 2002 | JohnW

Sorry I keep forgetting you lot are backwards in the old metric system :0) anyhoo, yes IPC, the bastions of right well as long as your board is only 1.6mm thick (sorry 62mils)say that you need 75% min general and 50% on ground planes. I'd like to se

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