Electronics Forum: tsop 256 (Page 1 of 1)

Component size on double-sided PCB

Electronics Forum | Mon Jun 07 17:58:12 EDT 2004 | Rob

UPDATE: Just for fun... I sacrificed a scrapped board to determine what remained and what fell and this is the result. Board dimension was 18"x9" and .9" thick. Components consist of hundreds of passives plus 386 proc (QFP256), TSOPs, SOLs 14/16/20,

Re: Screen printing the board from........

Electronics Forum | Thu Mar 05 07:49:00 EST 1998 | Steve Gregory

Hi Ron, Your question really opens up a "Pandora's box", but when you say you're not able to print perfectly, what is it exactly that you mean? Is the print lacking volume? Is it mis-registered? Are you bridging? Also, what printers have you used? Do

Re: Screen printing the board from........

Electronics Forum | Thu Mar 05 23:52:26 EST 1998 | Ron Costa

| Hi Ron, | Your question really opens up a "Pandora's box", but when you say you're not able to print perfectly, what is it exactly that you mean? Is the print lacking volume? Is it mis-registered? Are you bridging? Also, what printers have you used

Re: DOUBLE REFLOW WITH HEAVY WEIGHT PLCC PACKAGE

Electronics Forum | Fri Jul 24 13:41:05 EDT 1998 | Bob Willis

Sorry guys have a look at this list of component weights and then work out the surface area of the lead/pad and then come back on the PLCC issue. Chip 0805���� 0.007g������ 2 Chip 1206���� 0.009g���� 2 Chip 1210���� 0.012g���� 2 SOT23���������0.008g�

Re: More moisture-sensitivity ??'s

Electronics Forum | Mon Apr 24 17:42:34 EDT 2000 | Dave F

Rich: Awww, don�t worry that you have to ship product. This moisture sensitive part thing is more important. ;-) And don�t worry that everyone is giving you guff and no one is supporting you. Yours is a thankless job. ;-) You got it right!!!

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