On Fri, 09 Nov 2012 23:01:52 -0500, krw@att.bizzz wrote:>On Fri, 9 Nov 2012 17:06:44 -0800 (PST), "langwadt@fonz.dk" ><langwadt@fonz.dk> wrote: ><snip>> >Doesn't anyone look at the NOT FOR USE IN NEW DESIGNS warnings?No warning on this one, just the PD. RL
Large capacitance varicaps, where are thee?
Started by ●October 22, 2012
Reply by ●November 10, 20122012-11-10
Reply by ●November 12, 20122012-11-12
On Sat, 10 Nov 2012 13:45:34 -0500, legg <legg@nospam.magma.ca> wrote:>On Fri, 09 Nov 2012 23:01:52 -0500, krw@att.bizzz wrote: > >>On Fri, 9 Nov 2012 17:06:44 -0800 (PST), "langwadt@fonz.dk" >><langwadt@fonz.dk> wrote: >> >>>On 9 Nov., 20:34, legg <l...@nospam.magma.ca> wrote: ><snip> >>>> It won't be obvious until regular distributors actually stop listing >>>> the �parts, but it makes use of them an unlikely choice for new >>>> product development. >>>> >>>> RL >>> >>>doesn't parts(that are actually used) on the way out tend to have some >>>exponential price increase? >> >>After the production halts, sure. Those who didn't prepare pay the >>scalpers. Unless you're so small that you buy only off the Internet >>from DigiKey, and such, you do get discontinuance notices. Sometimes >>they fall through the cracks (no system is perfect) but there are >>warnings. >> >>>Does tend to make sure that the ones who really need them get them, >>>not some one who just picked it because it was the first >>>they found >> >>Doesn't anyone look at the NOT FOR USE IN NEW DESIGNS warnings? > >Doesn't anyone require multiple sourcing any more?Good grief, how many parts *have* multiple sources. Many companies are sourcing from multiple locations and even pay TSMC, for example, as a hot standby. That doesn't stop them from discontinuing a part.>My boms tend to require THREE inependently sourced parts, as >purchasing options. I relax at home, though, by building stuff from >unobtanium.You must do *really* boring shit.
Reply by ●November 12, 20122012-11-12
On Sat, 10 Nov 2012 13:45:34 -0500, legg <legg@nospam.magma.ca> wrote:>On Fri, 09 Nov 2012 23:01:52 -0500, krw@att.bizzz wrote: > >>On Fri, 9 Nov 2012 17:06:44 -0800 (PST), "langwadt@fonz.dk" >><langwadt@fonz.dk> wrote: >> >>>On 9 Nov., 20:34, legg <l...@nospam.magma.ca> wrote: ><snip> >>>> It won't be obvious until regular distributors actually stop listing >>>> the �parts, but it makes use of them an unlikely choice for new >>>> product development. >>>> >>>> RL >>> >>>doesn't parts(that are actually used) on the way out tend to have some >>>exponential price increase? >> >>After the production halts, sure. Those who didn't prepare pay the >>scalpers. Unless you're so small that you buy only off the Internet >>from DigiKey, and such, you do get discontinuance notices. Sometimes >>they fall through the cracks (no system is perfect) but there are >>warnings. >> >>>Does tend to make sure that the ones who really need them get them, >>>not some one who just picked it because it was the first >>>they found >> >>Doesn't anyone look at the NOT FOR USE IN NEW DESIGNS warnings? > >Doesn't anyone require multiple sourcing any more? > >My boms tend to require THREE inependently sourced parts, as >purchasing options. I relax at home, though, by building stuff from >unobtanium. > >RLThings like uPs, FPGAs, ADCs, equalizers, PHYs, high-end analog chips, DDSs, fast opamps, switching regulators, all sorts of high-end stuff is sole-source. -- John Larkin Highland Technology Inc www.highlandtechnology.com jlarkin at highlandtechnology dot com Precision electronic instrumentation Picosecond-resolution Digital Delay and Pulse generators Custom timing and laser controllers Photonics and fiberoptic TTL data links VME analog, thermocouple, LVDT, synchro, tachometer Multichannel arbitrary waveform generators
Reply by ●November 12, 20122012-11-12
On Sun, 11 Nov 2012 23:55:38 -0500, krw@att.bizzz wrote:>On Sat, 10 Nov 2012 13:45:34 -0500, legg <legg@nospam.magma.ca> wrote: > >>On Fri, 09 Nov 2012 23:01:52 -0500, krw@att.bizzz wrote: >> >>>On Fri, 9 Nov 2012 17:06:44 -0800 (PST), "langwadt@fonz.dk" >>><langwadt@fonz.dk> wrote: >>> >>>>On 9 Nov., 20:34, legg <l...@nospam.magma.ca> wrote: >><snip> >>>>> It won't be obvious until regular distributors actually stop listing >>>>> the �parts, but it makes use of them an unlikely choice for new >>>>> product development. >>>>> >>>>> RL >>>> >>>>doesn't parts(that are actually used) on the way out tend to have some >>>>exponential price increase? >>> >>>After the production halts, sure. Those who didn't prepare pay the >>>scalpers. Unless you're so small that you buy only off the Internet >>>from DigiKey, and such, you do get discontinuance notices. Sometimes >>>they fall through the cracks (no system is perfect) but there are >>>warnings. >>> >>>>Does tend to make sure that the ones who really need them get them, >>>>not some one who just picked it because it was the first >>>>they found >>> >>>Doesn't anyone look at the NOT FOR USE IN NEW DESIGNS warnings? >> >>Doesn't anyone require multiple sourcing any more? > >Good grief, how many parts *have* multiple sources. Many companies >are sourcing from multiple locations and even pay TSMC, for example, >as a hot standby. That doesn't stop them from discontinuing a part. > >>My boms tend to require THREE inependently sourced parts, as >>purchasing options. I relax at home, though, by building stuff from >>unobtanium. > >You must do *really* boring shit.And you must spend a lot of time waitng for somebody else to do it for you. RL
Reply by ●November 12, 20122012-11-12
On Mon, 12 Nov 2012 08:31:49 -0800, John Larkin <jjlarkin@highNOTlandTHIStechnologyPART.com> wrote:>On Sat, 10 Nov 2012 13:45:34 -0500, legg <legg@nospam.magma.ca> wrote: > >>On Fri, 09 Nov 2012 23:01:52 -0500, krw@att.bizzz wrote: >> >>>On Fri, 9 Nov 2012 17:06:44 -0800 (PST), "langwadt@fonz.dk" >>><langwadt@fonz.dk> wrote: >>> >>>>On 9 Nov., 20:34, legg <l...@nospam.magma.ca> wrote: >><snip> >>>>> It won't be obvious until regular distributors actually stop listing >>>>> the �parts, but it makes use of them an unlikely choice for new >>>>> product development. >>>>> >>>>> RL >>>> >>>>doesn't parts(that are actually used) on the way out tend to have some >>>>exponential price increase? >>> >>>After the production halts, sure. Those who didn't prepare pay the >>>scalpers. Unless you're so small that you buy only off the Internet >>>from DigiKey, and such, you do get discontinuance notices. Sometimes >>>they fall through the cracks (no system is perfect) but there are >>>warnings. >>> >>>>Does tend to make sure that the ones who really need them get them, >>>>not some one who just picked it because it was the first >>>>they found >>> >>>Doesn't anyone look at the NOT FOR USE IN NEW DESIGNS warnings? >> >>Doesn't anyone require multiple sourcing any more? >> >>My boms tend to require THREE inependently sourced parts, as >>purchasing options. I relax at home, though, by building stuff from >>unobtanium. >> >>RL > >Things like uPs, FPGAs, ADCs, equalizers, PHYs, high-end analog chips, >DDSs, fast opamps, switching regulators, all sorts of high-end stuff >is sole-source....but occasionally not irreplaceable. If you don't even consider it, you'll never know. If you do, it may be (it used to be....) worth the effort. How many posts does S.E.D. get, with just this issue? If the 'end' is high, then so should be the engineering standards. That's what you get paid for. RL
Reply by ●November 12, 20122012-11-12
On Mon, 12 Nov 2012 13:48:50 -0500, legg <legg@nospam.magma.ca> wrote:>On Sun, 11 Nov 2012 23:55:38 -0500, krw@att.bizzz wrote: > >>On Sat, 10 Nov 2012 13:45:34 -0500, legg <legg@nospam.magma.ca> wrote: >> >>>On Fri, 09 Nov 2012 23:01:52 -0500, krw@att.bizzz wrote: >>> >>>>On Fri, 9 Nov 2012 17:06:44 -0800 (PST), "langwadt@fonz.dk" >>>><langwadt@fonz.dk> wrote: >>>> >>>>>On 9 Nov., 20:34, legg <l...@nospam.magma.ca> wrote: >>><snip> >>>>>> It won't be obvious until regular distributors actually stop listing >>>>>> the �parts, but it makes use of them an unlikely choice for new >>>>>> product development. >>>>>> >>>>>> RL >>>>> >>>>>doesn't parts(that are actually used) on the way out tend to have some >>>>>exponential price increase? >>>> >>>>After the production halts, sure. Those who didn't prepare pay the >>>>scalpers. Unless you're so small that you buy only off the Internet >>>>from DigiKey, and such, you do get discontinuance notices. Sometimes >>>>they fall through the cracks (no system is perfect) but there are >>>>warnings. >>>> >>>>>Does tend to make sure that the ones who really need them get them, >>>>>not some one who just picked it because it was the first >>>>>they found >>>> >>>>Doesn't anyone look at the NOT FOR USE IN NEW DESIGNS warnings? >>> >>>Doesn't anyone require multiple sourcing any more? >> >>Good grief, how many parts *have* multiple sources. Many companies >>are sourcing from multiple locations and even pay TSMC, for example, >>as a hot standby. That doesn't stop them from discontinuing a part. >> >>>My boms tend to require THREE inependently sourced parts, as >>>purchasing options. I relax at home, though, by building stuff from >>>unobtanium. >> >>You must do *really* boring shit. > >And you must spend a lot of time waitng for somebody else to do it for >you.You've obviously been bored to the point of being brain dead.
Reply by ●November 12, 20122012-11-12
On Mon, 12 Nov 2012 08:31:49 -0800, John Larkin <jjlarkin@highNOTlandTHIStechnologyPART.com> wrote:>On Sat, 10 Nov 2012 13:45:34 -0500, legg <legg@nospam.magma.ca> wrote: > >>On Fri, 09 Nov 2012 23:01:52 -0500, krw@att.bizzz wrote: >> >>>On Fri, 9 Nov 2012 17:06:44 -0800 (PST), "langwadt@fonz.dk" >>><langwadt@fonz.dk> wrote: >>> >>>>On 9 Nov., 20:34, legg <l...@nospam.magma.ca> wrote: >><snip> >>>>> It won't be obvious until regular distributors actually stop listing >>>>> the �parts, but it makes use of them an unlikely choice for new >>>>> product development. >>>>> >>>>> RL >>>> >>>>doesn't parts(that are actually used) on the way out tend to have some >>>>exponential price increase? >>> >>>After the production halts, sure. Those who didn't prepare pay the >>>scalpers. Unless you're so small that you buy only off the Internet >>>from DigiKey, and such, you do get discontinuance notices. Sometimes >>>they fall through the cracks (no system is perfect) but there are >>>warnings. >>> >>>>Does tend to make sure that the ones who really need them get them, >>>>not some one who just picked it because it was the first >>>>they found >>> >>>Doesn't anyone look at the NOT FOR USE IN NEW DESIGNS warnings? >> >>Doesn't anyone require multiple sourcing any more? >> >>My boms tend to require THREE inependently sourced parts, as >>purchasing options. I relax at home, though, by building stuff from >>unobtanium. >> >>RL > >Things like uPs, FPGAs, ADCs, equalizers, PHYs, high-end analog chips, >DDSs, fast opamps, switching regulators, all sorts of high-end stuff >is sole-source....switching power supplies, most linear power supplies, audio amplifiers, and just about everything else I've used in the past few years outside of resistors and capacitors.
Reply by ●November 12, 20122012-11-12
On Mon, 12 Nov 2012 13:59:43 -0500, legg <legg@nospam.magma.ca> wrote:>On Mon, 12 Nov 2012 08:31:49 -0800, John Larkin ><jjlarkin@highNOTlandTHIStechnologyPART.com> wrote: > >>On Sat, 10 Nov 2012 13:45:34 -0500, legg <legg@nospam.magma.ca> wrote: >> >>>On Fri, 09 Nov 2012 23:01:52 -0500, krw@att.bizzz wrote: >>> >>>>On Fri, 9 Nov 2012 17:06:44 -0800 (PST), "langwadt@fonz.dk" >>>><langwadt@fonz.dk> wrote: >>>> >>>>>On 9 Nov., 20:34, legg <l...@nospam.magma.ca> wrote: >>><snip> >>>>>> It won't be obvious until regular distributors actually stop listing >>>>>> the �parts, but it makes use of them an unlikely choice for new >>>>>> product development. >>>>>> >>>>>> RL >>>>> >>>>>doesn't parts(that are actually used) on the way out tend to have some >>>>>exponential price increase? >>>> >>>>After the production halts, sure. Those who didn't prepare pay the >>>>scalpers. Unless you're so small that you buy only off the Internet >>>>from DigiKey, and such, you do get discontinuance notices. Sometimes >>>>they fall through the cracks (no system is perfect) but there are >>>>warnings. >>>> >>>>>Does tend to make sure that the ones who really need them get them, >>>>>not some one who just picked it because it was the first >>>>>they found >>>> >>>>Doesn't anyone look at the NOT FOR USE IN NEW DESIGNS warnings? >>> >>>Doesn't anyone require multiple sourcing any more? >>> >>>My boms tend to require THREE inependently sourced parts, as >>>purchasing options. I relax at home, though, by building stuff from >>>unobtanium. >>> >>>RL >> >>Things like uPs, FPGAs, ADCs, equalizers, PHYs, high-end analog chips, >>DDSs, fast opamps, switching regulators, all sorts of high-end stuff >>is sole-source. > >...but occasionally not irreplaceable. If you don't even consider it, >you'll never know. If you do, it may be (it used to be....) worth the >effort.The software is worth more than the hardware. It's not worth the effort anymore.>How many posts does S.E.D. get, with just this issue?No one said you were alone doing boring shit.>If the 'end' is high, then so should be the engineering standards. >That's what you get paid for.Red herring.
