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Groups > sci.electronics.design > #447619 > unrolled thread
| Started by | John Larkin <jjlarkin@highlandtechnology.com> |
|---|---|
| First post | 2017-02-13 22:02 -0800 |
| Last post | 2017-02-16 12:10 -0500 |
| Articles | 20 on this page of 26 — 14 participants |
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gumdrop source John Larkin <jjlarkin@highlandtechnology.com> - 2017-02-13 22:02 -0800
Re: gumdrop source Winfield Hill <hill@rowland.harvard.edu> - 2017-02-14 04:15 -0800
Re: gumdrop source Jeroen Belleman <jeroen@nospam.please> - 2017-02-14 13:43 +0100
Re: gumdrop source Tim Wescott <tim@seemywebsite.com> - 2017-02-14 09:57 -0600
Re: gumdrop source John Larkin <jjlarkin@highlandtechnology.com> - 2017-02-14 08:11 -0800
Re: gumdrop source Robert Latest <boblatest@yahoo.com> - 2017-02-18 10:14 +0000
Re: gumdrop source Robert Latest <boblatest@yahoo.com> - 2017-02-18 09:57 +0000
Re: gumdrop source krw@notreal.com - 2017-02-18 10:18 -0500
Re: gumdrop source John Larkin <jjlarkin@highlandtechnology.com> - 2017-02-14 08:01 -0800
Re: gumdrop source Winfield Hill <hill@rowland.harvard.edu> - 2017-02-14 08:06 -0800
Re: gumdrop source Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2017-02-13 18:20 -0500
Re: gumdrop source John Larkin <jjlarkin@highlandtechnology.com> - 2017-02-14 09:07 -0800
Re: gumdrop source Robert Latest <boblatest@yahoo.com> - 2017-02-18 10:18 +0000
Re: gumdrop source Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2017-02-17 22:50 -0500
Re: gumdrop source Winfield Hill <hill@rowland.harvard.edu> - 2017-02-18 09:43 -0800
Re: gumdrop source Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2017-02-18 13:13 -0500
Re: gumdrop source bitrex <bitrex@de.lete.earthlink.net> - 2017-02-14 08:44 -0500
Re: gumdrop source Robert Baer <robertbaer@localnet.com> - 2017-02-15 13:19 -0800
Re: gumdrop source Clifford Heath <no.spam@please.net> - 2017-02-16 03:54 +1100
Re: gumdrop source Lasse Langwadt Christensen <langwadt@fonz.dk> - 2017-02-15 13:31 -0800
Re: gumdrop source John Larkin <jjlarkinxyxy@highlandtechnology.com> - 2017-02-15 13:46 -0800
Re: gumdrop source Jeroen Belleman <jeroen@nospam.please> - 2017-02-15 23:04 +0100
Re: gumdrop source John Devereux <john@devereux.me.uk> - 2017-02-16 05:16 +0000
Re: gumdrop source tabbypurr@gmail.com - 2017-02-15 14:45 -0800
Re: gumdrop source Robert Baer <robertbaer@localnet.com> - 2017-02-15 19:59 -0800
Re: gumdrop source krw@notreal.com - 2017-02-16 12:10 -0500
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| From | John Larkin <jjlarkin@highlandtechnology.com> |
|---|---|
| Date | 2017-02-13 22:02 -0800 |
| Subject | gumdrop source |
| Message-ID | <1475ac58vmcli4c6kchncmk8kdbh8743ev@4ax.com> |
http://www.nexperia.com/ The web site is still a tad flakey. -- John Larkin Highland Technology, Inc lunatic fringe electronics
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| From | Winfield Hill <hill@rowland.harvard.edu> |
|---|---|
| Date | 2017-02-14 04:15 -0800 |
| Message-ID | <o7usdk01s7g@drn.newsguy.com> |
| In reply to | #447619 |
John Larkin wrote...
>
> http://www.nexperia.com/
>
> The web site is still a tad flakey.
I see our favorite BF862 low-noise JFET is missing,
although it still shows at the nxp.com site.
--
Thanks,
- Win
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| From | Jeroen Belleman <jeroen@nospam.please> |
|---|---|
| Date | 2017-02-14 13:43 +0100 |
| Message-ID | <o7uu2e$juq$1@gioia.aioe.org> |
| In reply to | #447635 |
On 2017-02-14 13:15, Winfield Hill wrote: > John Larkin wrote... >> >> http://www.nexperia.com/ >> >> The web site is still a tad flakey. > > I see our favorite BF862 low-noise JFET is missing, > although it still shows at the nxp.com site. > > What's with characterizing 'small signal MOSFETs' by Qg and R_DSon? That's only one example. There are lots of other inappropriate parametrizations there. I hate it when they do that. Makes one wonder if they understand their own products and their clients' interests. Jeroen Belleman
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| From | Tim Wescott <tim@seemywebsite.com> |
|---|---|
| Date | 2017-02-14 09:57 -0600 |
| Message-ID | <c_adnVIZfJdQtT7FnZ2dnUU7-UOdnZ2d@giganews.com> |
| In reply to | #447636 |
On Tue, 14 Feb 2017 13:43:59 +0100, Jeroen Belleman wrote: > On 2017-02-14 13:15, Winfield Hill wrote: >> John Larkin wrote... >>> >>> http://www.nexperia.com/ >>> >>> The web site is still a tad flakey. >> >> I see our favorite BF862 low-noise JFET is missing, >> although it still shows at the nxp.com site. >> >> >> > What's with characterizing 'small signal MOSFETs' by Qg and R_DSon? > That's only one example. There are lots of other inappropriate > parametrizations there. I hate it when they do that. Makes one wonder if > they understand their own products and their clients' interests. > > Jeroen Belleman Given that it was bought by an investment group, they'll be in "milk the cash cow" mode. -- Tim Wescott Control systems, embedded software and circuit design I'm looking for work! See my website if you're interested http://www.wescottdesign.com
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| From | John Larkin <jjlarkin@highlandtechnology.com> |
|---|---|
| Date | 2017-02-14 08:11 -0800 |
| Message-ID | <doa6acl0aa7rge36lmq9jqd6kt6b98bf4u@4ax.com> |
| In reply to | #447646 |
On Tue, 14 Feb 2017 09:57:01 -0600, Tim Wescott <tim@seemywebsite.com> wrote: >On Tue, 14 Feb 2017 13:43:59 +0100, Jeroen Belleman wrote: > >> On 2017-02-14 13:15, Winfield Hill wrote: >>> John Larkin wrote... >>>> >>>> http://www.nexperia.com/ >>>> >>>> The web site is still a tad flakey. >>> >>> I see our favorite BF862 low-noise JFET is missing, >>> although it still shows at the nxp.com site. >>> >>> >>> >> What's with characterizing 'small signal MOSFETs' by Qg and R_DSon? Cg and Rds-on are sometimes useful, for "rf" jfets and phemts, but seldom available on data sheets. But it sounds like the people who hacked that web site were in a rush. >> That's only one example. There are lots of other inappropriate >> parametrizations there. I hate it when they do that. Makes one wonder if >> they understand their own products and their clients' interests. >> >> Jeroen Belleman > >Given that it was bought by an investment group, they'll be in "milk the >cash cow" mode. Yes. There have been other spinouts of low-end parts business to investors. Onsemi and Fairchild come to mind. -- John Larkin Highland Technology, Inc lunatic fringe electronics
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| From | Robert Latest <boblatest@yahoo.com> |
|---|---|
| Date | 2017-02-18 10:14 +0000 |
| Message-ID | <egql4bFkunvU2@mid.individual.net> |
| In reply to | #447646 |
Tim Wescott wrote: > On Tue, 14 Feb 2017 13:43:59 +0100, Jeroen Belleman wrote: > >> On 2017-02-14 13:15, Winfield Hill wrote: >>> John Larkin wrote... >>>> >>>> http://www.nexperia.com/ >>>> >>>> The web site is still a tad flakey. >>> > > Given that it was bought by an investment group, they'll be in "milk the > cash cow" mode. Actually, not this time. Cash cow mode was when KKR bought Philips' semiconductor branch, naming it NXP and putting the financial burden of the purchase onto the purchased company itself (I never figured out how that works). Rather than being sliced up and the parts sold separately, NXP went on to be quite successful and did a stunning performance as publicly traded company. However, the "Standard Products" division (for which I work) was quite obviously always the unloved child of a company that wanted to be big in the "High Performance Mixed Signal" (HPMS) business, whatever that means. I once asked the then freshly appointed CEO Rick Clemmer at a town hall how NXP's HPMS business compared to other HPMS companies, and he said it wasn't really comparable because he mad that term up. Anyway, it was only logical for HPMS-oriented to divest the ugly duckling "Standard Products" with its even uglier child "General Applications," even though they are doing solid business. We actually contributed above-average to NXP's total 2016 EBIT. The new investor is a Chinese pension fund, of course 100% state controlled, but from what I heard from other JAC-owned companies they are basically about decade-long strategic investment and not short-term gain. Personally I'm looking forward to working in an environment that is not a slave of the stock chart (and nothing else). robert
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| From | Robert Latest <boblatest@yahoo.com> |
|---|---|
| Date | 2017-02-18 09:57 +0000 |
| Message-ID | <egqk3tFkunvU1@mid.individual.net> |
| In reply to | #447636 |
Jeroen Belleman wrote: > On 2017-02-14 13:15, Winfield Hill wrote: >> John Larkin wrote... >>> >>> http://www.nexperia.com/ >>> >>> The web site is still a tad flakey. >> >> I see our favorite BF862 low-noise JFET is missing, >> although it still shows at the nxp.com site. >> >> > > What's with characterizing 'small signal MOSFETs' by > Qg and R_DSon? That's only one example. There are lots > of other inappropriate parametrizations there. I hate > it when they do that. Makes one wonder if they understand > their own products and their clients' interests. I wonder that myself. "Small signal", by definition, means operating devices in the linear, i.e. analog region. In reality Nexperia's "small signal" MOSFETs are meant to be used in low-power switching applications, so they should be marketed as "low power" or "low current." robert
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| From | krw@notreal.com |
|---|---|
| Date | 2017-02-18 10:18 -0500 |
| Message-ID | <2dpgac17th2u1iov93j1hugh2m17rhohho@4ax.com> |
| In reply to | #448139 |
On 18 Feb 2017 09:57:17 GMT, Robert Latest <boblatest@yahoo.com> wrote: >Jeroen Belleman wrote: >> On 2017-02-14 13:15, Winfield Hill wrote: >>> John Larkin wrote... >>>> >>>> http://www.nexperia.com/ >>>> >>>> The web site is still a tad flakey. >>> >>> I see our favorite BF862 low-noise JFET is missing, >>> although it still shows at the nxp.com site. >>> >>> >> >> What's with characterizing 'small signal MOSFETs' by >> Qg and R_DSon? That's only one example. There are lots >> of other inappropriate parametrizations there. I hate >> it when they do that. Makes one wonder if they understand >> their own products and their clients' interests. > >I wonder that myself. "Small signal", by definition, means operating devices >in the linear, i.e. analog region. In reality Nexperia's "small signal" >MOSFETs are meant to be used in low-power switching applications, so they >should be marketed as "low power" or "low current." I don't see the issue. English has many overloaded words. Context means everything.
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| From | John Larkin <jjlarkin@highlandtechnology.com> |
|---|---|
| Date | 2017-02-14 08:01 -0800 |
| Message-ID | <nda6aclpe5r8btcrgv3il081a850r33hbf@4ax.com> |
| In reply to | #447635 |
On 14 Feb 2017 04:15:48 -0800, Winfield Hill <hill@rowland.harvard.edu> wrote: >John Larkin wrote... >> >> http://www.nexperia.com/ >> >> The web site is still a tad flakey. > > I see our favorite BF862 low-noise JFET is missing, > although it still shows at the nxp.com site. Phil will panic! -- John Larkin Highland Technology, Inc lunatic fringe electronics
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| From | Winfield Hill <hill@rowland.harvard.edu> |
|---|---|
| Date | 2017-02-14 08:06 -0800 |
| Message-ID | <o7v9ts02lat@drn.newsguy.com> |
| In reply to | #447648 |
John Larkin wrote...
>
>On 14 Feb 2017 04:15:48 -0800, Winfield Hill
><hill@rowland.harvard.edu> wrote:
>
>>John Larkin wrote...
>>>
>>> http://www.nexperia.com/
>>>
>>> The web site is still a tad flakey.
>>
>> I see our favorite BF862 low-noise JFET is missing,
>> although it still shows at the nxp.com site.
>
> Phil will panic!
We'll all be increasing our lifetime inventories.
--
Thanks,
- Win
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| From | Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> |
|---|---|
| Date | 2017-02-13 18:20 -0500 |
| Message-ID | <o7vaou$s2o$1@dont-email.me> |
| In reply to | #447648 |
On 02/14/2017 11:01 AM, John Larkin wrote: > On 14 Feb 2017 04:15:48 -0800, Winfield Hill > <hill@rowland.harvard.edu> wrote: > >> John Larkin wrote... >>> >>> http://www.nexperia.com/ >>> >>> The web site is still a tad flakey. >> >> I see our favorite BF862 low-noise JFET is missing, >> although it still shows at the nxp.com site. > > Phil will panic! > > Nah, I have 11k of them, plus 3k CPH3910. That'll build enough front ends to pay for my next yacht. ;) Cheers Phil Hobbs -- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC Optics, Electro-optics, Photonics, Analog Electronics 160 North State Road #203 Briarcliff Manor NY 10510 hobbs at electrooptical dot net http://electrooptical.net
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| From | John Larkin <jjlarkin@highlandtechnology.com> |
|---|---|
| Date | 2017-02-14 09:07 -0800 |
| Message-ID | <88e6act2vophmmkk38l3orpb1qpjv4rnhq@4ax.com> |
| In reply to | #447651 |
On Mon, 13 Feb 2017 18:20:30 -0500, Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> wrote: >On 02/14/2017 11:01 AM, John Larkin wrote: >> On 14 Feb 2017 04:15:48 -0800, Winfield Hill >> <hill@rowland.harvard.edu> wrote: >> >>> John Larkin wrote... >>>> >>>> http://www.nexperia.com/ >>>> >>>> The web site is still a tad flakey. >>> >>> I see our favorite BF862 low-noise JFET is missing, >>> although it still shows at the nxp.com site. >> >> Phil will panic! >> >> > >Nah, I have 11k of them, plus 3k CPH3910. That'll build enough front >ends to pay for my next yacht. ;) > >Cheers > >Phil Hobbs You could build an all-jfet computer! Or all-jfet audio power amp, and make more money. -- John Larkin Highland Technology, Inc lunatic fringe electronics
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| From | Robert Latest <boblatest@yahoo.com> |
|---|---|
| Date | 2017-02-18 10:18 +0000 |
| Message-ID | <egqlbiFkunvU3@mid.individual.net> |
| In reply to | #447635 |
Winfield Hill wrote: > John Larkin wrote... >> >> http://www.nexperia.com/ >> >> The web site is still a tad flakey. > > I see our favorite BF862 low-noise JFET is missing, > although it still shows at the nxp.com site. I never figured out the BF862. The only way to ever find it on NXPs website was by entering the type name in the search box. No matter from which angle you attacked the various selection guides -- you'd never end up at the BF862. I've always wanted to research whare the wafers are made. Not in Hamburg, and probably not in Manchester. I'm sure it's not just a NXP-labelled generic wafer type from some foundry. For that, the specs are too unique. robert
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| From | Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> |
|---|---|
| Date | 2017-02-17 22:50 -0500 |
| Message-ID | <aMOdnWRAepxJ5jXFnZ2dnUU7-S2dnZ2d@supernews.com> |
| In reply to | #448144 |
On 02/18/2017 05:18 AM, Robert Latest wrote: > Winfield Hill wrote: >> John Larkin wrote... >>> >>> http://www.nexperia.com/ >>> >>> The web site is still a tad flakey. >> >> I see our favorite BF862 low-noise JFET is missing, >> although it still shows at the nxp.com site. > > I never figured out the BF862. The only way to ever find it on NXPs website > was by entering the type name in the search box. No matter from which angle > you attacked the various selection guides -- you'd never end up at the > BF862. > > I've always wanted to research whare the wafers are made. Not in Hamburg, > and probably not in Manchester. > > I'm sure it's not just a NXP-labelled generic wafer type from some foundry. > For that, the specs are too unique. > > robert > Actually, ON Semi has brought out a bunch of JFETs lately that give the BF862 a run for its money. My fave is the ex-Sanyo CPH3910, which is just about equivalent to a half-size BF862, except with more than half the transconductance. That's good for a lot of things. Cheers Phil Hobbs -- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC Optics, Electro-optics, Photonics, Analog Electronics 160 North State Road #203 Briarcliff Manor NY 10510 hobbs at electrooptical dot net http://electrooptical.net
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| From | Winfield Hill <hill@rowland.harvard.edu> |
|---|---|
| Date | 2017-02-18 09:43 -0800 |
| Message-ID | <o8a14u015o6@drn.newsguy.com> |
| In reply to | #448184 |
Phil Hobbs wrote...
>
> Actually, ON Semi has brought out a bunch of JFETs
> lately that give the BF862 a run for its money.
> My fave is the ex-Sanyo CPH3910, which is just
> about equivalent to a half-size BF862, except
> with more than half the transconductance.
> That's good for a lot of things.
Have you examined the dual, CPH6904.
--
Thanks,
- Win
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| From | Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> |
|---|---|
| Date | 2017-02-18 13:13 -0500 |
| Message-ID | <b8Odnb9kaLQuEzXFnZ2dnUU7-SGdnZ2d@supernews.com> |
| In reply to | #448188 |
On 02/18/2017 12:43 PM, Winfield Hill wrote: > Phil Hobbs wrote... >> >> Actually, ON Semi has brought out a bunch of JFETs >> lately that give the BF862 a run for its money. >> My fave is the ex-Sanyo CPH3910, which is just >> about equivalent to a half-size BF862, except >> with more than half the transconductance. >> That's good for a lot of things. > > Have you examined the dual, CPH6904. > > I have some, but haven't done any real measurements. Cheers Phil Hobbs -- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC Optics, Electro-optics, Photonics, Analog Electronics 160 North State Road #203 Briarcliff Manor NY 10510 hobbs at electrooptical dot net http://electrooptical.net
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| From | bitrex <bitrex@de.lete.earthlink.net> |
|---|---|
| Date | 2017-02-14 08:44 -0500 |
| Message-ID | <3RDoA.5997$d55.288@fx25.iad> |
| In reply to | #447619 |
On 02/14/2017 01:02 AM, John Larkin wrote: > > http://www.nexperia.com/ > > The web site is still a tad flakey. > > Are there any depletions hiding in there somewhere?
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| From | Robert Baer <robertbaer@localnet.com> |
|---|---|
| Date | 2017-02-15 13:19 -0800 |
| Message-ID | <8B3pA.45797$Pg3.17489@fx42.iad> |
| In reply to | #447619 |
John Larkin wrote: > > http://www.nexperia.com/ > > The web site is still a tad flakey. > > WTF is going on WRT cookies? Seems more and more sites are getting paranoid to the point of demanding a response to their "disclosure". Cookies have been around (read: used) for many YEARS. This cookie crap is becoming obscene.
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| From | Clifford Heath <no.spam@please.net> |
|---|---|
| Date | 2017-02-16 03:54 +1100 |
| Message-ID | <58a4c7a9$0$31219$c3e8da3$a9097924@news.astraweb.com> |
| In reply to | #447788 |
On 16/02/17 08:19, Robert Baer wrote: > John Larkin wrote: >> >> http://www.nexperia.com/ >> >> The web site is still a tad flakey. > WTF is going on WRT cookies? > Seems more and more sites are getting paranoid to the point of > demanding a response to their "disclosure". > Cookies have been around (read: used) for many YEARS. > > This cookie crap is becoming obscene. European privacy laws demand they let you know you're being tracked.
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| From | Lasse Langwadt Christensen <langwadt@fonz.dk> |
|---|---|
| Date | 2017-02-15 13:31 -0800 |
| Message-ID | <627e0021-c9c1-4239-942c-25c5475661f4@googlegroups.com> |
| In reply to | #447788 |
Den onsdag den 15. februar 2017 kl. 22.19.04 UTC+1 skrev Robert Baer: > John Larkin wrote: > > > > http://www.nexperia.com/ > > > > The web site is still a tad flakey. > > > > > WTF is going on WRT cookies? > Seems more and more sites are getting paranoid to the point of > demanding a response to their "disclosure". > Cookies have been around (read: used) for many YEARS. > > This cookie crap is becoming obscene. sites requiring you to accept cookies is a privacy protection EU law, I believe they have now changed it so it is only required for cookies that are not only for the site you are visiting
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