60/40 vs. 63/37 Solder
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From: Jim Yanik on 18 Jul 2010 12:28 "William Sommerwerck" <grizzledgeezer(a)comcast.net> wrote in news:i1upmh$14a$1(a)news.eternal-september.org: >> AH-SO! At last we're communicating. Yep, usenet is tough that way >> sometimes. Here's the missing piece: The solder I buy IS KESTER. The >> EXACT same stuff that you buy. Only two differences: The disparity in >> formulations is less, and the price is roughly half. > > Fascinating. Perhaps someone, somewhere will have an explanation. > > > different businesses mark up at different prices. name brands often go at higher rates,and less popular items may get priced lower to move them. -- Jim Yanik jyanik at localnet dot com
From: Smitty Two on 18 Jul 2010 13:41 In article <Xns9DB97EF26DC04jyaniklocalnetcom(a)216.168.3.44>, Jim Yanik <jyanik(a)abuse.gov> wrote: > "William Sommerwerck" <grizzledgeezer(a)comcast.net> wrote in > news:i1upmh$14a$1(a)news.eternal-september.org: > > >> AH-SO! At last we're communicating. Yep, usenet is tough that way > >> sometimes. Here's the missing piece: The solder I buy IS KESTER. The > >> EXACT same stuff that you buy. Only two differences: The disparity in > >> formulations is less, and the price is roughly half. > > > > Fascinating. Perhaps someone, somewhere will have an explanation. > > > > > > > > different businesses mark up at different prices. > name brands often go at higher rates,and less popular items may get priced > lower to move them. As a side note, the wholesale pricing of solder also seems to be heavily volume driven. A small distributor to hobbyists might buy a couple of hundred pounds at a time, while a large industrial distributor buys tens of thousands. They get a huge discount for that, and can easily pass that savings on to their customers.
From: William Sommerwerck on 18 Jul 2010 13:58 > As a side note, the wholesale pricing of solder also seems to be > heavily volume-driven. A small distributor to hobbyists might buy > a couple of hundred pounds at a time, while a large industrial > distributor buys tens of thousands. They get a huge discount for > that, and can easily pass that savings on to their customers. But we still don't have an answer to the question of why there is such a wide disparity in the /relative/ pricing of 60/40 and eutectic solders.
From: Geoffrey S. Mendelson on 18 Jul 2010 14:09 William Sommerwerck wrote: > But we still don't have an answer to the question of why there is such a > wide disparity in the /relative/ pricing of 60/40 and eutectic solders. Because 60/40 is just solder, while 63/37 solder is an allowed under special circumstances lead-free replacement and needs certification? I know it's not lead free, but it's the solder you use when you have to use leaded solder under lead free regulations. Geoff. -- Geoffrey S. Mendelson, Jerusalem, Israel gsm(a)mendelson.com N3OWJ/4X1GM To help restaurants, as part of the "stimulus package", everyone must order dessert. As part of the socialized health plan, you are forbidden to eat it. :-)
From: Phil Hobbs on 18 Jul 2010 14:17
William Sommerwerck wrote: >>> <http://en.wikipedia.org/wiki/Solder> >>> This got my attention: >>> Some alloys, namely of lead and to some degree tin, contain small >>> but significant amounts of radioisotope impurities. The >>> radioisotopes undergoing alpha decay are a concern due to their >>> tendency to cause soft errors. Polonium-210 is especially >>> problematic; lead-210 beta decays to bismuth-210 which then beta >>> decays to polonium-210, an intense emitter of alpha particles. >>> Uranium-238 and thorium-232 are other significant contaminants of >>> lead containing alloys. >>> Oh swell.... something else to worry about. > >> sounds like bullshit, alpha particles aren't energetic enough to get >> even 1/10 of the way through the encapsulation on a RAM chip. > > Correct. The original writer was probably confused by the fact that the > materials ceramic ICs are made of can contain radioactive materials that can > cause errors. > > No, the alphas from lead are a real problem. Ten years ago, there were folks going round to churches with lead roofs, offering them a new lead roof in exchange for their old--and now low-alpha--lead ones. Same with steel from old battleships. Cheers Phil Hobbs -- Dr Philip C D Hobbs Principal ElectroOptical Innovations 55 Orchard Rd Briarcliff Manor NY 10510 845-480-2058 hobbs at electrooptical dot net http://electrooptical.net |