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Junior Varsity
New QSC Product - TouchMix
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<blockquote data-quote="John Roberts" data-source="post: 116161" data-attributes="member: 126"><p>Re: New QSC Product - TouchMix</p><p></p><p></p><p></p><p>While through hole design is archaic now, I recall going through the cost-benefit analysis at Peavey regarding removing sockets from PCBs. In large volume (more than thousands). Sockets cost around a penny and are machine inserted so not much incremental cost, with a noticeable payback benefit if/when that product ever requires service. A sharp pencil analysis revealed that IC failures were dominantly proximate to input and output circuits that were exposed to external stresses. As I recall we eliminated sockets on all but I/O related chips, but this became moot with the evolution to SMD technology.. SMD sockets are so rare I don't recall ever seeing one, let alone ever used one. </p><p></p><p>JR</p></blockquote><p></p>
[QUOTE="John Roberts, post: 116161, member: 126"] Re: New QSC Product - TouchMix While through hole design is archaic now, I recall going through the cost-benefit analysis at Peavey regarding removing sockets from PCBs. In large volume (more than thousands). Sockets cost around a penny and are machine inserted so not much incremental cost, with a noticeable payback benefit if/when that product ever requires service. A sharp pencil analysis revealed that IC failures were dominantly proximate to input and output circuits that were exposed to external stresses. As I recall we eliminated sockets on all but I/O related chips, but this became moot with the evolution to SMD technology.. SMD sockets are so rare I don't recall ever seeing one, let alone ever used one. JR [/QUOTE]
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