On Tue, 28 Sep 2021 14:40:09 -0400, bitrex <user@example.net> wrote:>Ouch: > ><https://www.mouser.com/Semiconductors/Discrete-Semiconductors/Transistors/MOSFET/_/N-ax1sf?P=1yzvta6Z1yrzahtZ1yw78i4&Ns=Pricing%7c0> > >A lot of the inexpensive low Vgs high-voltage MOSFETs are like that, >even singles :(Today's crisis: LM337 in dpak. -- Father Brown's figure remained quite dark and still; but in that instant he had lost his head. His head was always most valuable when he had lost it.
Horrible lead times on some MOSFETs
Started by ●September 28, 2021
Reply by ●September 29, 20212021-09-29
Reply by ●September 29, 20212021-09-29
On 9/29/2021 10:19 PM, jlarkin@highlandsniptechnology.com wrote:> On Tue, 28 Sep 2021 14:40:09 -0400, bitrex <user@example.net> wrote: > >> Ouch: >> >> <https://www.mouser.com/Semiconductors/Discrete-Semiconductors/Transistors/MOSFET/_/N-ax1sf?P=1yzvta6Z1yrzahtZ1yw78i4&Ns=Pricing%7c0> >> >> A lot of the inexpensive low Vgs high-voltage MOSFETs are like that, >> even singles :( > > Today's crisis: LM337 in dpak. >500 should be showing up any second now, have someone watch the site round the clock: <https://www.mouser.com/ProductDetail/Texas-Instruments/LM337KTTRG3?qs=iSMark9AYDW%252BdGe2gQtv0A%3D%3D>
Reply by ●September 30, 20212021-09-30
On Wed, 29 Sep 2021 22:32:23 -0400, bitrex <user@example.net> wrote:>On 9/29/2021 10:19 PM, jlarkin@highlandsniptechnology.com wrote: >> On Tue, 28 Sep 2021 14:40:09 -0400, bitrex <user@example.net> wrote: >> >>> Ouch: >>> >>> <https://www.mouser.com/Semiconductors/Discrete-Semiconductors/Transistors/MOSFET/_/N-ax1sf?P=1yzvta6Z1yrzahtZ1yw78i4&Ns=Pricing%7c0> >>> >>> A lot of the inexpensive low Vgs high-voltage MOSFETs are like that, >>> even singles :( >> >> Today's crisis: LM337 in dpak. >> > >500 should be showing up any second now, have someone watch the site >round the clock: > ><https://www.mouser.com/ProductDetail/Texas-Instruments/LM337KTTRG3?qs=iSMark9AYDW%252BdGe2gQtv0A%3D%3D>Thanks, but that's a D2PAK. We might have to try to hack it in, but it looks too big. Maybe a SOT-223 would work. I think we can get them. -- Father Brown's figure remained quite dark and still; but in that instant he had lost his head. His head was always most valuable when he had lost it.
Reply by ●September 30, 20212021-09-30
John Larkin wrote:> On Wed, 29 Sep 2021 12:43:16 -0700, Joerg <news@analogconsultants.com> > wrote: > >> On 9/28/21 11:40 AM, bitrex wrote: >>> Ouch: >>> >>> <https://www.mouser.com/Semiconductors/Discrete-Semiconductors/Transistors/MOSFET/_/N-ax1sf?P=1yzvta6Z1yrzahtZ1yw78i4&Ns=Pricing%7c0> >>> >>> >>> A lot of the inexpensive low Vgs high-voltage MOSFETs are like that, >>> even singles :( >>> >> >> Welcome to the new normal. I was yanked out of retirement a couple of >> weeks ago by clients who suddenly could no longer buy this, that and the >> other part. Still working on one case. >> >> My assumption is that this will continue for another 2-3 years and never >> quite settle back to the "good old days". Then again, it's often the >> same with lawn mower parts, toilet paper, ... > > The pattern is > > Shortage, real or not. > > Panic. > > Multiple over-buying. > > Ramp up production. > > Glut. Garages full of toilet paper.* Very useful in feeding that fire burning the garage...> > The semi industry does this pattern now and then. > > >-- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus
Reply by ●September 30, 20212021-09-30
On Wed, 29 Sep 2021 15:49:58 -0700, Joerg <news@analogconsultants.com> wrote:>On 9/29/21 3:04 PM, Phil Hobbs wrote: >> Joerg wrote: >>> On 9/29/21 1:10 PM, John Larkin wrote: >>>> On Wed, 29 Sep 2021 12:43:16 -0700, Joerg <news@analogconsultants.com> >>>> wrote: >>>> >>>>> On 9/28/21 11:40 AM, bitrex wrote: >>>>>> Ouch: >>>>>> >>>>>> <https://www.mouser.com/Semiconductors/Discrete-Semiconductors/Transistors/MOSFET/_/N-ax1sf?P=1yzvta6Z1yrzahtZ1yw78i4&Ns=Pricing%7c0> >>>>>> >>>>>> >>>>>> >>>>>> A lot of the inexpensive low Vgs high-voltage MOSFETs are like that, >>>>>> even singles :( >>>>>> >>>>> >>>>> Welcome to the new normal. I was yanked out of retirement a couple of >>>>> weeks ago by clients who suddenly could no longer buy this, that and >>>>> the >>>>> other part. Still working on one case. >>>>> >>>>> My assumption is that this will continue for another 2-3 years and >>>>> never >>>>> quite settle back to the "good old days". Then again, it's often the >>>>> same with lawn mower parts, toilet paper, ... >>>> >>>> The pattern is >>>> >>>> Shortage, real or not. >>>> >>>> Panic. >>>> >>> >>> That and the fear of Bidenflation. Next year the same chip could cost >>> 20% more. >>> >>> >>>> Multiple over-buying. >>>> >>>> Ramp up production. >>>> >>>> Glut. Garages full of toilet paper. >>>> >>> >>> I know a guy who has four (!) bulk packages in his walk-in closet. >>> >>> >>>> The semi industry does this pattern now and then. >>>> >>> >>> This time it's more serious. There are parts my clients need that have >>> the next scheduled delivery in December 2022. And even then there is a >>> substantial risk that they'd get blown out of the water a month before >>> via an "Oh, so sorry" email. Which just happened to one of my clients >>> so I might get to do a redesign of a perfectly fine circuit. >>> >> >> Well, it's good to exercise more than your legs. ;) >> > >Yes, but the plan was to invest my brain exercises in my newly rekindled >hobby of ham radio. So many ideas, so much stuff to build, but not much >time (yet).Maybe build the world's smallest HF transceiver. Under a square inch maybe. -- If a man will begin with certainties, he shall end with doubts, but if he will be content to begin with doubts he shall end in certainties. Francis Bacon
Reply by ●October 1, 20212021-10-01
On 9/30/21 10:02 AM, John Larkin wrote:> On Wed, 29 Sep 2021 15:49:58 -0700, Joerg <news@analogconsultants.com> > wrote: > >> On 9/29/21 3:04 PM, Phil Hobbs wrote: >>> Joerg wrote: >>>> On 9/29/21 1:10 PM, John Larkin wrote: >>>>> On Wed, 29 Sep 2021 12:43:16 -0700, Joerg <news@analogconsultants.com> >>>>> wrote: >>>>> >>>>>> On 9/28/21 11:40 AM, bitrex wrote: >>>>>>> Ouch: >>>>>>> >>>>>>> <https://www.mouser.com/Semiconductors/Discrete-Semiconductors/Transistors/MOSFET/_/N-ax1sf?P=1yzvta6Z1yrzahtZ1yw78i4&Ns=Pricing%7c0> >>>>>>> >>>>>>> >>>>>>> >>>>>>> A lot of the inexpensive low Vgs high-voltage MOSFETs are like that, >>>>>>> even singles :( >>>>>>> >>>>>> >>>>>> Welcome to the new normal. I was yanked out of retirement a couple of >>>>>> weeks ago by clients who suddenly could no longer buy this, that and >>>>>> the >>>>>> other part. Still working on one case. >>>>>> >>>>>> My assumption is that this will continue for another 2-3 years and >>>>>> never >>>>>> quite settle back to the "good old days". Then again, it's often the >>>>>> same with lawn mower parts, toilet paper, ... >>>>> >>>>> The pattern is >>>>> >>>>> Shortage, real or not. >>>>> >>>>> Panic. >>>>> >>>> >>>> That and the fear of Bidenflation. Next year the same chip could cost >>>> 20% more. >>>> >>>> >>>>> Multiple over-buying. >>>>> >>>>> Ramp up production. >>>>> >>>>> Glut. Garages full of toilet paper. >>>>> >>>> >>>> I know a guy who has four (!) bulk packages in his walk-in closet. >>>> >>>> >>>>> The semi industry does this pattern now and then. >>>>> >>>> >>>> This time it's more serious. There are parts my clients need that have >>>> the next scheduled delivery in December 2022. And even then there is a >>>> substantial risk that they'd get blown out of the water a month before >>>> via an "Oh, so sorry" email. Which just happened to one of my clients >>>> so I might get to do a redesign of a perfectly fine circuit. >>>> >>> >>> Well, it's good to exercise more than your legs. ;) >>> >> >> Yes, but the plan was to invest my brain exercises in my newly rekindled >> hobby of ham radio. So many ideas, so much stuff to build, but not much >> time (yet). > > Maybe build the world's smallest HF transceiver. Under a square inch > maybe. >That's already done. http://www.al7fs.us/AL7FS2.html https://www.pixiekits.com/product/building-pixie-kit-2-video/ I've seen one in SMT and with just wires coming off the board. It was the size of a (small) postage stamp. -- Regards, Joerg http://www.analogconsultants.com/
Reply by ●October 1, 20212021-10-01
On 9/29/21 8:48 PM, jlarkin@highlandsniptechnology.com wrote:> On Wed, 29 Sep 2021 22:32:23 -0400, bitrex <user@example.net> wrote: > >> On 9/29/2021 10:19 PM, jlarkin@highlandsniptechnology.com wrote: >>> On Tue, 28 Sep 2021 14:40:09 -0400, bitrex <user@example.net> wrote: >>> >>>> Ouch: >>>> >>>> <https://www.mouser.com/Semiconductors/Discrete-Semiconductors/Transistors/MOSFET/_/N-ax1sf?P=1yzvta6Z1yrzahtZ1yw78i4&Ns=Pricing%7c0> >>>> >>>> A lot of the inexpensive low Vgs high-voltage MOSFETs are like that, >>>> even singles :( >>> >>> Today's crisis: LM337 in dpak. >>> >> >> 500 should be showing up any second now, have someone watch the site >> round the clock: >> >> <https://www.mouser.com/ProductDetail/Texas-Instruments/LM337KTTRG3?qs=iSMark9AYDW%252BdGe2gQtv0A%3D%3D> > > Thanks, but that's a D2PAK. > > We might have to try to hack it in, but it looks too big. Maybe a > SOT-223 would work. I think we can get them. > >Chip 1 Exchange supposedly has 1787 of the LM337KVURG3 in stock but it's RFQ. -- Regards, Joerg http://www.analogconsultants.com/
Reply by ●October 1, 20212021-10-01
On Fri, 1 Oct 2021 09:50:16 -0700, Joerg <news@analogconsultants.com> wrote:>On 9/30/21 10:02 AM, John Larkin wrote: >> On Wed, 29 Sep 2021 15:49:58 -0700, Joerg <news@analogconsultants.com> >> wrote: >> >>> On 9/29/21 3:04 PM, Phil Hobbs wrote: >>>> Joerg wrote: >>>>> On 9/29/21 1:10 PM, John Larkin wrote: >>>>>> On Wed, 29 Sep 2021 12:43:16 -0700, Joerg <news@analogconsultants.com> >>>>>> wrote: >>>>>> >>>>>>> On 9/28/21 11:40 AM, bitrex wrote: >>>>>>>> Ouch: >>>>>>>> >>>>>>>> <https://www.mouser.com/Semiconductors/Discrete-Semiconductors/Transistors/MOSFET/_/N-ax1sf?P=1yzvta6Z1yrzahtZ1yw78i4&Ns=Pricing%7c0> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> A lot of the inexpensive low Vgs high-voltage MOSFETs are like that, >>>>>>>> even singles :( >>>>>>>> >>>>>>> >>>>>>> Welcome to the new normal. I was yanked out of retirement a couple of >>>>>>> weeks ago by clients who suddenly could no longer buy this, that and >>>>>>> the >>>>>>> other part. Still working on one case. >>>>>>> >>>>>>> My assumption is that this will continue for another 2-3 years and >>>>>>> never >>>>>>> quite settle back to the "good old days". Then again, it's often the >>>>>>> same with lawn mower parts, toilet paper, ... >>>>>> >>>>>> The pattern is >>>>>> >>>>>> Shortage, real or not. >>>>>> >>>>>> Panic. >>>>>> >>>>> >>>>> That and the fear of Bidenflation. Next year the same chip could cost >>>>> 20% more. >>>>> >>>>> >>>>>> Multiple over-buying. >>>>>> >>>>>> Ramp up production. >>>>>> >>>>>> Glut. Garages full of toilet paper. >>>>>> >>>>> >>>>> I know a guy who has four (!) bulk packages in his walk-in closet. >>>>> >>>>> >>>>>> The semi industry does this pattern now and then. >>>>>> >>>>> >>>>> This time it's more serious. There are parts my clients need that have >>>>> the next scheduled delivery in December 2022. And even then there is a >>>>> substantial risk that they'd get blown out of the water a month before >>>>> via an "Oh, so sorry" email. Which just happened to one of my clients >>>>> so I might get to do a redesign of a perfectly fine circuit. >>>>> >>>> >>>> Well, it's good to exercise more than your legs. ;) >>>> >>> >>> Yes, but the plan was to invest my brain exercises in my newly rekindled >>> hobby of ham radio. So many ideas, so much stuff to build, but not much >>> time (yet). >> >> Maybe build the world's smallest HF transceiver. Under a square inch >> maybe. >> > >That's already done. > >http://www.al7fs.us/AL7FS2.html >https://www.pixiekits.com/product/building-pixie-kit-2-video/ > >I've seen one in SMT and with just wires coming off the board. It was >the size of a (small) postage stamp.Darn. Maybe moonbounce next? -- If a man will begin with certainties, he shall end with doubts, but if he will be content to begin with doubts he shall end in certainties. Francis Bacon
Reply by ●October 1, 20212021-10-01
On Fri, 1 Oct 2021 09:56:01 -0700, Joerg <news@analogconsultants.com> wrote:>On 9/29/21 8:48 PM, jlarkin@highlandsniptechnology.com wrote: >> On Wed, 29 Sep 2021 22:32:23 -0400, bitrex <user@example.net> wrote: >> >>> On 9/29/2021 10:19 PM, jlarkin@highlandsniptechnology.com wrote: >>>> On Tue, 28 Sep 2021 14:40:09 -0400, bitrex <user@example.net> wrote: >>>> >>>>> Ouch: >>>>> >>>>> <https://www.mouser.com/Semiconductors/Discrete-Semiconductors/Transistors/MOSFET/_/N-ax1sf?P=1yzvta6Z1yrzahtZ1yw78i4&Ns=Pricing%7c0> >>>>> >>>>> A lot of the inexpensive low Vgs high-voltage MOSFETs are like that, >>>>> even singles :( >>>> >>>> Today's crisis: LM337 in dpak. >>>> >>> >>> 500 should be showing up any second now, have someone watch the site >>> round the clock: >>> >>> <https://www.mouser.com/ProductDetail/Texas-Instruments/LM337KTTRG3?qs=iSMark9AYDW%252BdGe2gQtv0A%3D%3D> >> >> Thanks, but that's a D2PAK. >> >> We might have to try to hack it in, but it looks too big. Maybe a >> SOT-223 would work. I think we can get them. >> >> > >Chip 1 Exchange supposedly has 1787 of the LM337KVURG3 in stock but it's >RFQ.Bonnie already got a quote from them. $10.13 ea for 400 pieces. -- If a man will begin with certainties, he shall end with doubts, but if he will be content to begin with doubts he shall end in certainties. Francis Bacon
Reply by ●October 1, 20212021-10-01
On 10/1/21 12:14 PM, John Larkin wrote:> On Fri, 1 Oct 2021 09:50:16 -0700, Joerg <news@analogconsultants.com> > wrote: > >> On 9/30/21 10:02 AM, John Larkin wrote: >>> On Wed, 29 Sep 2021 15:49:58 -0700, Joerg <news@analogconsultants.com> >>> wrote: >>> >>>> On 9/29/21 3:04 PM, Phil Hobbs wrote: >>>>> Joerg wrote: >>>>>> On 9/29/21 1:10 PM, John Larkin wrote: >>>>>>> On Wed, 29 Sep 2021 12:43:16 -0700, Joerg <news@analogconsultants.com> >>>>>>> wrote: >>>>>>> >>>>>>>> On 9/28/21 11:40 AM, bitrex wrote: >>>>>>>>> Ouch: >>>>>>>>> >>>>>>>>> <https://www.mouser.com/Semiconductors/Discrete-Semiconductors/Transistors/MOSFET/_/N-ax1sf?P=1yzvta6Z1yrzahtZ1yw78i4&Ns=Pricing%7c0> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> A lot of the inexpensive low Vgs high-voltage MOSFETs are like that, >>>>>>>>> even singles :( >>>>>>>>> >>>>>>>> >>>>>>>> Welcome to the new normal. I was yanked out of retirement a couple of >>>>>>>> weeks ago by clients who suddenly could no longer buy this, that and >>>>>>>> the >>>>>>>> other part. Still working on one case. >>>>>>>> >>>>>>>> My assumption is that this will continue for another 2-3 years and >>>>>>>> never >>>>>>>> quite settle back to the "good old days". Then again, it's often the >>>>>>>> same with lawn mower parts, toilet paper, ... >>>>>>> >>>>>>> The pattern is >>>>>>> >>>>>>> Shortage, real or not. >>>>>>> >>>>>>> Panic. >>>>>>> >>>>>> >>>>>> That and the fear of Bidenflation. Next year the same chip could cost >>>>>> 20% more. >>>>>> >>>>>> >>>>>>> Multiple over-buying. >>>>>>> >>>>>>> Ramp up production. >>>>>>> >>>>>>> Glut. Garages full of toilet paper. >>>>>>> >>>>>> >>>>>> I know a guy who has four (!) bulk packages in his walk-in closet. >>>>>> >>>>>> >>>>>>> The semi industry does this pattern now and then. >>>>>>> >>>>>> >>>>>> This time it's more serious. There are parts my clients need that have >>>>>> the next scheduled delivery in December 2022. And even then there is a >>>>>> substantial risk that they'd get blown out of the water a month before >>>>>> via an "Oh, so sorry" email. Which just happened to one of my clients >>>>>> so I might get to do a redesign of a perfectly fine circuit. >>>>>> >>>>> >>>>> Well, it's good to exercise more than your legs. ;) >>>>> >>>> >>>> Yes, but the plan was to invest my brain exercises in my newly rekindled >>>> hobby of ham radio. So many ideas, so much stuff to build, but not much >>>> time (yet). >>> >>> Maybe build the world's smallest HF transceiver. Under a square inch >>> maybe. >>> >> >> That's already done. >> >> http://www.al7fs.us/AL7FS2.html >> https://www.pixiekits.com/product/building-pixie-kit-2-video/ >> >> I've seen one in SMT and with just wires coming off the board. It was >> the size of a (small) postage stamp. > > > Darn. Maybe moonbounce next? >We already did that almost half a century ago. That was never my thing though. I am an HF guy and nowadays mostly CW (morse code). http://www.arrl.org/files/file/Technology/tis/info/pdf/78518.pdf Now, Mars bounce, that would be ... but we'd first have to re-start the Rancho Seco nuclear plant and then hold a major fund drive for the expected electricity bills. -- Regards, Joerg http://www.analogconsultants.com/
