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Groups > sci.electronics.design > #489393
| From | Winfield Hill <hill@rowland.harvard.edu> |
|---|---|
| Newsgroups | sci.electronics.design |
| Subject | Re: A SOT-89 with emitter in the middle |
| Date | 2017-12-27 05:50 -0800 |
| Organization | Rowland Institute |
| Message-ID | <p208f501inj@drn.newsguy.com> (permalink) |
| References | (1 earlier) <l50p3dllhtesisjcal17ng6sfqe6iluqr2@4ax.com> <fa41t7FgrouU1@mid.individual.net> <bndq3d56s890872q7ae8i0tpmikvi6ks26@4ax.com> <p1tj4b088i@drn.newsguy.com> <riu44d1ji2pfffkhei8nru06iuuds4lepc@4ax.com> |
John Larkin wrote...
> Winfield Hill wrote:
>> John Larkin wrote...
>>>
>>> Unfortunately, SOT89 RF transistors get discontinued
>>> a lot faster than they get introduced. I designed a
>>> wonderful circuit recently, that uses BFQ149s (PNP)
>>> parts, and then they were discontinued. Bummer. We
>>> bought 11,000 to tide us over for a while, but I'm
>>> going to have to redesign eventually.
>>
>> OK, I'll bite. What's the wonderful design that'll
>> swallow up 11,000 BFQ149s, and come back for more?
>
> It's the output stage of a pulse generator. ...
I checked, there's virtually no BFQ149 stock available.
When the inventory disappears that fast, it means, or
it should have meant to NXP, the demand really wasn't
low enough to justify a sharp product discontinuation.
(There are other solutions, they could have increased
the price and waited a few years, or made a mass of
product and deposited it with Rochester, etc.)
I think that a bean counter, imagining greater profits
by radically trimming a product line, isn't taking into
account the ultimate losses that will result from the
bad effects of his breaking faith with the engineering
community designing in his products in the first place.
--
Thanks,
- Win
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A SOT-89 with emitter in the middle LM <sala.nimi@mail.com> - 2017-12-21 22:07 +0200
Re: A SOT-89 with emitter in the middle Gerhard Hoffmann <ghf@hoffmann-hochfrequenz.de> - 2017-12-21 21:55 +0100
Re: A SOT-89 with emitter in the middle LM <sala.nimi@mail.com> - 2017-12-21 23:51 +0200
Re: A SOT-89 with emitter in the middle John Larkin <jjlarkin@highlandtechnology.com> - 2017-12-24 10:47 -0800
Re: A SOT-89 with emitter in the middle Robert Baer <robertbaer@localnet.com> - 2017-12-24 18:27 -0800
Re: A SOT-89 with emitter in the middle John Larkin <jjlarkin@highlandtechnology.com> - 2017-12-25 08:41 -0800
Re: A SOT-89 with emitter in the middle Winfield Hill <hill@rowland.harvard.edu> - 2017-12-21 13:54 -0800
Re: A SOT-89 with emitter in the middle LM <sala.nimi@mail.com> - 2017-12-23 21:27 +0200
Re: A SOT-89 with emitter in the middle Robert Baer <robertbaer@localnet.com> - 2017-12-23 22:05 -0800
Re: A SOT-89 with emitter in the middle John Larkin <jjlarkin@highlandtechnology.com> - 2017-12-21 19:51 -0800
Re: A SOT-89 with emitter in the middle Gerhard Hoffmann <ghf@hoffmann-hochfrequenz.de> - 2017-12-22 10:34 +0100
Re: A SOT-89 with emitter in the middle John Larkin <jjlarkin@highlandtechnology.com> - 2017-12-22 08:56 -0800
Re: A SOT-89 with emitter in the middle Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2017-12-23 08:01 -0500
Re: A SOT-89 with emitter in the middle Winfield Hill <hill@rowland.harvard.edu> - 2017-12-26 05:34 -0800
Re: A SOT-89 with emitter in the middle John Larkin <jjlarkin@highlandtechnology.com> - 2017-12-26 08:43 -0800
Re: A SOT-89 with emitter in the middle Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2017-12-26 13:03 -0500
Re: A SOT-89 with emitter in the middle John Larkin <jjlarkin@highlandtechnology.com> - 2017-12-26 10:36 -0800
Re: A SOT-89 with emitter in the middle Winfield Hill <hill@rowland.harvard.edu> - 2017-12-27 05:50 -0800
Re: A SOT-89 with emitter in the middle krw@notreal.com - 2017-12-27 09:34 -0500
Re: A SOT-89 with emitter in the middle "John Miles, KE5FX" <jmiles@gmail.com> - 2017-12-27 13:42 -0800
Re: A SOT-89 with emitter in the middle krw@notreal.com - 2017-12-27 19:58 -0500
Re: A SOT-89 with emitter in the middle John Larkin <jjlarkin@highlandtechnology.com> - 2017-12-27 19:11 -0800
Re: A SOT-89 with emitter in the middle krw@notreal.com - 2017-12-27 22:44 -0500
Re: A SOT-89 with emitter in the middle John Larkin <jjlarkin@highlandtechnology.com> - 2017-12-27 20:08 -0800
Re: A SOT-89 with emitter in the middle krw@notreal.com - 2017-12-27 23:29 -0500
Re: A SOT-89 with emitter in the middle whit3rd <whit3rd@gmail.com> - 2017-12-28 03:34 -0800
Re: A SOT-89 with emitter in the middle krw@notreal.com - 2017-12-28 08:42 -0500
Re: A SOT-89 with emitter in the middle John Larkin <jjlarkin@highlandtechnology.com> - 2017-12-28 08:16 -0800
Re: A SOT-89 with emitter in the middle boB <boB@K7IQ.com> - 2017-12-28 10:11 -0800
Re: A SOT-89 with emitter in the middle krw@notreal.com - 2017-12-28 20:03 -0500
Re: A SOT-89 with emitter in the middle Winfield Hill <hill@rowland.harvard.edu> - 2017-12-28 17:08 -0800
Re: A SOT-89 with emitter in the middle krw@notreal.com - 2017-12-28 20:28 -0500
Re: A SOT-89 with emitter in the middle mpm <mpmillard@aol.com> - 2017-12-23 17:12 -0800
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