Xref: utzoo rec.music.synth:18810 sci.electronics:17515 Path: utzoo!utgpu!news-server.csri.toronto.edu!bonnie.concordia.ca!thunder.mcrcim.mcgill.edu!snorkelwacker.mit.edu!usc!samsung!uunet!world!jon_sree From: jon_sree@world.std.com (Jon Sreekanth) Newsgroups: rec.music.synth,sci.electronics Subject: Re: Pricing of DIPs vs SMTs Message-ID: Date: 6 Feb 91 18:23:46 GMT References: <9932@b11.ingr.com> <1991Feb2.233702.606@psuecl.bitnet> <1991Feb5.024136.10349@ucs.sfu.ca> Sender: jon_sree@world.std.com (Jon Sreekanth) Organization: The World Lines: 31 In-Reply-To: hillman@ucs.sfu.ca's message of 5 Feb 91 02:41:36 GMT In article <1991Feb5.024136.10349@ucs.sfu.ca> hillman@ucs.sfu.ca (Steve Hillman) writes: synthesizer. Since we don't have the money to go with large custom VLSI's, most of our circuitry is off the shelf TTL circuitry. When it comes to running off production boards, we'd like to go with SMT, as it would make for MUCH smaller PC boards. Unfortunately, I have no information on the differences in price between DIP packages and equivelant Surface Mount Packages. Is there a large difference, or have the prices become quite close, now that SMT use is almost universal? Our quantities would be quite low - in the 100's. We're using SMT parts on one of our products that's just now going into production. In 1000's, for common parts (TTL glue, TO-92 type transistors, low wattage resistors, low value caps), there's little difference in price. I'm not sure about Canadian prices. Remember also that assembly costs for SMT boards are less : per piece, the cost of assembly of an SMT component might be half or better than a through hole component. Even if the smt part is slightly more expensive, you'll make it up in labor costs saved. Exotic parts, mechanical parts (switches, connectors, leds, etc), EPROM's, etc are still either unavailable or costly in SMT. Talk to a few of the mainline distributors to get more specifics on your specific parts. Make sure your pcb shop can handle smt. Regards, / Jon Sreekanth Assabet Valley Microsystems Fax and PC products 346 Lincoln St #722, Marlboro, MA 01752 508-562-0722 jon_sree@world.std.com