On 1/31/2016 6:51 PM, John Kasunich wrote: > > On Sun, Jan 31, 2016, at 06:18 PM, Gene Heskett wrote: >> On Sunday 31 January 2016 13:43:50 Jon Elson wrote: >> >>> I can't imagine why you'd buy commodity semis from a Chinese >>> source when there are great distributors like Digi-Key and >>> Mouser, that are quite happy to serve small orders. >>> >> Both of the above have minimum orders for me that are quite costly for a >> 10 pak of anything in the transistor 10 cent to 5 dollar price range. >> That and their sites search engines return what looks to me to be random >> from dice throws results. If I go searching for small hexfets I get >> 20,000 hits, none of which give me the data to make a choice >> semi-intelligently. Digikey is slightly better, but not enough to spend >> hours wading thru the selections while still hiding the important data. >> More often than not, clicking on a fine tune option, such as any case >> smaller than a to-220 returns zero results and I know that there are >> smaller versions such as could drive an ice cube relay at 12 or 24 >> volts. That can be easily put in a to-92, or even in a SMD package, so >> why can't it be found? > I find this rather confusing. Mouser is meh, but IMHO Digikey's search > engine is simply outstanding. For example: > > I type MOSFET into the search box. It returns a list of categories. > I pick "FETS - Single". It returns a list of 39000+ parts. > I click the "In stock" box and "apply filters". List is now 17,999 parts. > Scroll over to "Mounting Type", select "Thru hole" and apply filters. 3293 > parts. > Scroll over to "Supplier Device Package" and select the four TO-92 variants > (ctrl-click for multiple selections). Apply filters, 123 parts. > Under packaging, select "Bulk" and "Cut tape", (the other variants are for > large quantities). Apply filters, down to 106. > Select 40 to 100V in the drain-to-source voltage box, down to 59. > Select all the sub-1-ohm ones in the Rds-on box, down to 7. > Put "1" in the desired quantity box. Hit the up arrow in the price column > to sort cheapest first (giving a quantity moves anything with a minimum > order larger than that quantity items to the bottom of the list). > Cheapest part is at the top of the list, MicroChip TN0604N3-G. Click > on the PDF icon in the 2nd column and I'm looking at a data sheet. > Click on the links in the 4th or 5th column and I'm looking at the > details page for that part. Add 1 to cart. Place order. There is no > minimum total order (although it sucks to spend $6 on shipping when > you are ordering a $1 part). > > It took me less time to find that part than it took to type out what I did. > > Digikey is absolutely my first stop for just about any part, both for > hobby stuff and for my day job. Like McMaster, their prices may > be a bit higher than some other sources, but usually not enough to > matter, and the search engine more than makes up for it. > > John Kasunich > > John Kasunich > jmkasun...@fastmail.fm > The other nice thing about Digikey is that they will ship a small order via First Class mail (at least they used to do that..)
I've ordered a dozen chips for some project and the total has been something like $9.00 plus $1.30 for postage and the parts show up two days later in a first class envelope. Whats not to like about that! Dave ------------------------------------------------------------------------------ Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web transactions and take corrective actions now Troubleshoot faster and improve end-user experience. Signup Now! http://pubads.g.doubleclick.net/gampad/clk?id=267308311&iu=/4140 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
