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- Newsgroups: comp.sys.amiga.misc
- Path: FreeNet.Carleton.CA!de351
- From: de351@FreeNet.Carleton.CA (K. C. Lee)
- Subject: Re: New Press Release!
- Message-ID: <DoB6nD.n36@freenet.carleton.ca>
- Sender: de351@freenet2.carleton.ca (K. C. Lee)
- Reply-To: de351@FreeNet.Carleton.CA (K. C. Lee)
- Organization: The National Capital FreeNet
- References: <4hv29s$kkh@due.unit.no> <Do3LLz.I18@cix.compulink.co.uk> <dalec.05p5@zorro.amitrix.com> <4i73u2$e7g@news.sdd.hp.com> <dalec.05ru@zorro.amitrix.com>
- Date: Fri, 15 Mar 1996 12:28:25 GMT
-
-
- > In article <4i73u2$e7g@news.sdd.hp.com> Jeff Grimmett writes:
- >> dalec@zorro.amitrix.com (Dale Currie) wrote:
- >>
- >> At any rate, the real cost savings here is by NOT having to drill through
- >> the PCA when mounting the chip. Each hole costs, both in design
- >> considerations (on a multilayer board) and in actual labor costs. A PLCC
- >> or QFP chip doesn't require that added expense, though, and is easier to
- >> automate production, too. All in all, it's a BIG cost savings. Every
- >> through-hole component costs MUCH more in _overall_ costs than its SMT
- >> counterpart.
-
- Not to mention that you can't drill holes in the pitch (# of pins/inch or
- /mm) offered by the PLCC or QFP. Try doing a hole every 0.025 inches (or
- less) without cutting up the board :) and lining up the pins in each hole
- during assembly. :)
-
- Dale Currie (dalec@zorro.amitrix.com) writes:
-
- > You got that right. Now that SMD parts are more available in smaller lots,
- > it's even worth using them for limited production. The slight increase in
- > component cost is more than offset by the savings in board costs and
- > simplified layout and assembly.
-
- Yeap. Some of the really neat stuff are only abvailable in SMD packages. :(
-
- > + _ ____________ tm Dale Currie ____ ___ _ +
- > | /.\ .. | __ \ / dalec@amitrix.com / __[___]__ T tm |
-
- K. C. Lee
-
-
-