PMOS Equivalent to 2N7000?
Jim Thompson
...Jim Thompson
--
| James E.Thompson, CTO | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona 85048 Skype: Contacts Only | |
| Voice:(480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |
I love to cook with wine. Sometimes I even put it in the food.
John KD5YI
> Is there a PMOS Equivalent to N-channel 2N7000?
>
> ...Jim Thompson
Look at TP0610.
John
John KD5YI
>
> ...Jim Thompson
Also look at ZVP3306 and ZVP2106A.
Joerg
> Is there a PMOS Equivalent to N-channel 2N7000?
>
Sometimes the BSS84 is used. At least by yours truly because they are
under 5c in qties :-)
--
Regards, Joerg
http://www.analogconsultants.com/
"gmail" domain blocked because of excessive spam.
Use another domain or send PM.
k...@att.bizzzzzzzzzzzz
>Jim Thompson wrote:
>> Is there a PMOS Equivalent to N-channel 2N7000?
>>
>
>Sometimes the BSS84 is used. At least by yours truly because they are
>under 5c in qties :-)
I've been using the Diodes DMG1012 (N) and DMG1013 (P), and am in the process
of designing in the DMG1024 and DMG1023 (duals). They're in the area of
$.05/transistor and SOT-523 is a nice package. ;-)
Joerg
Just make sure the duals have a 2nd source :-)
k...@att.bizzzzzzzzzzzz
>k...@att.bizzzzzzzzzzzz wrote:
>> On Sat, 28 May 2011 12:24:44 -0700, Joerg <inv...@invalid.invalid> wrote:
>>
>>> Jim Thompson wrote:
>>>> Is there a PMOS Equivalent to N-channel 2N7000?
>>>>
>>> Sometimes the BSS84 is used. At least by yours truly because they are
>>> under 5c in qties :-)
>>
>> I've been using the Diodes DMG1012 (N) and DMG1013 (P), and am in the process
>> of designing in the DMG1024 and DMG1023 (duals). They're in the area of
>> $.05/transistor and SOT-523 is a nice package. ;-)
>
>
>Just make sure the duals have a 2nd source :-)
Or buy enough the first time. ;-)
Joerg
> On Sat, 28 May 2011 12:53:38 -0700, Joerg <inv...@invalid.invalid> wrote:
>
>> k...@att.bizzzzzzzzzzzz wrote:
>>> On Sat, 28 May 2011 12:24:44 -0700, Joerg <inv...@invalid.invalid> wrote:
>>>
>>>> Jim Thompson wrote:
>>>>> Is there a PMOS Equivalent to N-channel 2N7000?
>>>>>
>>>> Sometimes the BSS84 is used. At least by yours truly because they are
>>>> under 5c in qties :-)
>>> I've been using the Diodes DMG1012 (N) and DMG1013 (P), and am in the process
>>> of designing in the DMG1024 and DMG1023 (duals). They're in the area of
>>> $.05/transistor and SOT-523 is a nice package. ;-)
>>
>> Just make sure the duals have a 2nd source :-)
>
> Or buy enough the first time. ;-)
For small runs, yes. Inventory is majorly frowned upon by the financial
folks and can also have bad tax consequences unless you outside production.
k...@att.bizzzzzzzzzzzz
>k...@att.bizzzzzzzzzzzz wrote:
>> On Sat, 28 May 2011 12:53:38 -0700, Joerg <inv...@invalid.invalid> wrote:
>>
>>> k...@att.bizzzzzzzzzzzz wrote:
>>>> On Sat, 28 May 2011 12:24:44 -0700, Joerg <inv...@invalid.invalid> wrote:
>>>>
>>>>> Jim Thompson wrote:
>>>>>> Is there a PMOS Equivalent to N-channel 2N7000?
>>>>>>
>>>>> Sometimes the BSS84 is used. At least by yours truly because they are
>>>>> under 5c in qties :-)
>>>> I've been using the Diodes DMG1012 (N) and DMG1013 (P), and am in the process
>>>> of designing in the DMG1024 and DMG1023 (duals). They're in the area of
>>>> $.05/transistor and SOT-523 is a nice package. ;-)
>>>
>>> Just make sure the duals have a 2nd source :-)
>>
>> Or buy enough the first time. ;-)
>
>
>For small runs, yes. Inventory is majorly frowned upon by the financial
>folks and can also have bad tax consequences unless you outside production.
We don't make a million of anything. At worst case it just adds one more part
to the hundreds that already have no second source.
In any case, it's better than it not fitting on the board. I still like
SOT-523s and SC-70s. ;-)
Jamie
> Is there a PMOS Equivalent to N-channel 2N7000?
>
> ...Jim Thompson
How about this?
http://www.diodes.com/datasheets/ZXMC3A17DN8.pdf
Jamie
Joel Koltner
news:p3u2u6lhi8nhileok...@4ax.com...
> We don't make a million of anything. At worst case it just adds one more
> part
> to the hundreds that already have no second source.
If you looked at our parts inventory, fewer than 1% have a known second
source... and I suspect that there's no more than 10% where there even *is* a
second source. I bet your parts inventory is similar?
Granted, if we hired Joerg to come on in and tweak all the designs, I bet that
perhaps upwards of 1/4 to 1/3 of all parts could be changed to something with
a second source. :-)
(Granted, that makes the most sense only when you hit, say, at least 1,000+ or
perhaps 10,000+ widgets/year, I suspect.)
---Joel
k...@att.bizzzzzzzzzzzz
<zapwireD...@yahoo.com> wrote:
><k...@att.bizzzzzzzzzzzz> wrote in message
>news:p3u2u6lhi8nhileok...@4ax.com...
>> We don't make a million of anything. At worst case it just adds one more
>> part
>> to the hundreds that already have no second source.
>
>If you looked at our parts inventory, fewer than 1% have a known second
>source... and I suspect that there's no more than 10% where there even *is* a
>second source. I bet your parts inventory is similar?
Other than resistors and caps, sure. We often have a second for those because
I don't like being bothered when they reorder. ;-) A lot of other components
are fairly easily replaceable (op-amps, gates, and jellybean stuff). Then
there is a class, of perhaps a hundred parts, where a replacement would be
somewhere between painful and disastrous.
>Granted, if we hired Joerg to come on in and tweak all the designs, I bet that
>perhaps upwards of 1/4 to 1/3 of all parts could be changed to something with
>a second source. :-)
Maybe. Don't know how you propose to do a second source on the radios. ;-)
>(Granted, that makes the most sense only when you hit, say, at least 1,000+ or
>perhaps 10,000+ widgets/year, I suspect.)
So does Chinese production, but I don't want that job either.
Joel Koltner
news:j898u6pl1rrp8pakm...@4ax.com...
> Other than resistors and caps, sure. We often have a second for those
> because
> I don't like being bothered when they reorder. ;-) A lot of other
> components
> are fairly easily replaceable (op-amps, gates, and jellybean stuff).
Right, although there footprints don't match as often as I'd like!
> Maybe. Don't know how you propose to do a second source on the radios. ;-)
True!
We roll our own radios, since for the modulation schemes/data
formats/frequency ranges we want to use there isn't really anything
appropriate off-the-shelf. No doubt this costs more than the nice ISM-band
DSSS modules you guys have... but when you look at old systems like the Telex
BTR-800 that's been around for decades, using regular old FM, and still
fetches ~$1,500 for the beltpacks... well, clearly there's enough margin to
support competiting systems with widely varying production costs and customers
really are much more interested in features & performance than price. It's a
nice market to be in! (...even if the only way Joerg is ever going to end up
using one of these systems is if you or I donate one to his church... :-) )
>>(Granted, that makes the most sense only when you hit, say, at least 1,000+
>>or
>>perhaps 10,000+ widgets/year, I suspect.)
>
> So does Chinese production, but I don't want that job either.
I suppose the problem there is that, once you sign up to coordinate Chinese
production, there's no stepping down -- it's not just a job you spend a few
months doing and then can largely sit back and ignore, while it keeps running
seamlessly for years on end...
---Joel
Joerg
> <k...@att.bizzzzzzzzzzzz> wrote in message
> news:j898u6pl1rrp8pakm...@4ax.com...
>> Other than resistors and caps, sure. We often have a second for those
>> because
>> I don't like being bothered when they reorder. ;-) A lot of other
>> components
>> are fairly easily replaceable (op-amps, gates, and jellybean stuff).
>
> Right, although there footprints don't match as often as I'd like!
>
I try to avoid any opamp that isn't in industry standard pinout.
>> Maybe. Don't know how you propose to do a second source on the
>> radios. ;-)
>
> True!
>
> We roll our own radios, since for the modulation schemes/data
> formats/frequency ranges we want to use there isn't really anything
> appropriate off-the-shelf. No doubt this costs more than the nice
> ISM-band DSSS modules you guys have... but when you look at old systems
> like the Telex BTR-800 that's been around for decades, using regular old
> FM, and still fetches ~$1,500 for the beltpacks... well, clearly there's
> enough margin to support competiting systems with widely varying
> production costs and customers really are much more interested in
> features & performance than price. It's a nice market to be in!
> (...even if the only way Joerg is ever going to end up using one of
> these systems is if you or I donate one to his church... :-) )
>
Oh yeah, should I tell our pastor already? :-)
Just kidding, we are pretty happy with what we've got. Thou shalt not
envy ... Except we'll need more of those some day.
>>> (Granted, that makes the most sense only when you hit, say, at least
>>> 1,000+ or
>>> perhaps 10,000+ widgets/year, I suspect.)
>>
>> So does Chinese production, but I don't want that job either.
>
> I suppose the problem there is that, once you sign up to coordinate
> Chinese production, there's no stepping down -- it's not just a job you
> spend a few months doing and then can largely sit back and ignore, while
> it keeps running seamlessly for years on end...
>
Actually, it can. Some of my designs are built in Shenzhen and other
than the very occasional alternative source request it pretty much does
run seamlessly for years on end.
Of course there is not one part in those designs that doesn't have at
least four sources ;-)
k...@att.bizzzzzzzzzzzz
<zapwireD...@yahoo.com> wrote:
><k...@att.bizzzzzzzzzzzz> wrote in message
>news:j898u6pl1rrp8pakm...@4ax.com...
>> Other than resistors and caps, sure. We often have a second for those
>> because
>> I don't like being bothered when they reorder. ;-) A lot of other
>> components
>> are fairly easily replaceable (op-amps, gates, and jellybean stuff).
>
>Right, although there footprints don't match as often as I'd like!
We don't have a lot of problems with that, at least for standard op-amps. Some
are high power or audio amps, so wouldn't expect a standard pinout. Of course
there's SO, MSOP, and TSOP flavors of some but not others.
>> Maybe. Don't know how you propose to do a second source on the radios. ;-)
>
>True!
>
>We roll our own radios, since for the modulation schemes/data
>formats/frequency ranges we want to use there isn't really anything
>appropriate off-the-shelf. No doubt this costs more than the nice ISM-band
>DSSS modules you guys have...
Dunno, someone is paying the engineering. Those radios aren't cheap.
>but when you look at old systems like the Telex
>BTR-800 that's been around for decades, using regular old FM, and still
>fetches ~$1,500 for the beltpacks... well, clearly there's enough margin to
>support competiting systems with widely varying production costs and customers
>really are much more interested in features & performance than price. It's a
>nice market to be in! (...even if the only way Joerg is ever going to end up
>using one of these systems is if you or I donate one to his church... :-) )
I don't think he'd want one of ours. I don't imagine his pastor has a
director, ten assistant directors, a lighting crew, sound crew, and a camera
crew. ...or plays football. ;-)
>>>(Granted, that makes the most sense only when you hit, say, at least 1,000+
>>>or
>>>perhaps 10,000+ widgets/year, I suspect.)
>>
>> So does Chinese production, but I don't want that job either.
>
>I suppose the problem there is that, once you sign up to coordinate Chinese
>production, there's no stepping down -- it's not just a job you spend a few
>months doing and then can largely sit back and ignore, while it keeps running
>seamlessly for years on end...
Don't forget the moving to China part.
Joel Koltner
news:94irrk...@mid.individual.net...
> I try to avoid any opamp that isn't in industry standard pinout.
Yes, certainly a good idea. What I've been finding lately in that, while
there's a small number of places making variable-gain amplifiers in SO-8
packages, none of the manufacturers seemed to have bothered to use the same
footprint as the other ones... :-( -- I expect the same is true for many
"non-generic" amplifiers -- e.g., instrumentation op-amps, fully differential
amps, etc.
> Oh yeah, should I tell our pastor already? :-)
Mmm... perhaps not quite yet! ;-)
Hopefully you have lots of, e.g., WiFi access points and other 2.4GHz stuff
running so that life is made that much harder for Keith's units. :-)
> Just kidding, we are pretty happy with what we've got. Thou shalt not
> envy ... Except we'll need more of those some day.
I did like your original idea of just pressing DECT phones into service as a
poor-man's wireless intercom... <$100 for two "beltpacks," the base, and
headsets! (...and you even get your choice of rechargeable "AA" or
alkalines...!)
---Joel
k...@att.bizzzzzzzzzzzz
<zapwireD...@yahoo.com> wrote:
>"Joerg" <inv...@invalid.invalid> wrote in message
>news:94irrk...@mid.individual.net...
>> I try to avoid any opamp that isn't in industry standard pinout.
>
>Yes, certainly a good idea. What I've been finding lately in that, while
>there's a small number of places making variable-gain amplifiers in SO-8
>packages, none of the manufacturers seemed to have bothered to use the same
>footprint as the other ones... :-( -- I expect the same is true for many
>"non-generic" amplifiers -- e.g., instrumentation op-amps, fully differential
>amps, etc.
>
>> Oh yeah, should I tell our pastor already? :-)
>
>Mmm... perhaps not quite yet! ;-)
>
>Hopefully you have lots of, e.g., WiFi access points and other 2.4GHz stuff
>running so that life is made that much harder for Keith's units. :-)
Nah, they work fine. If you're paranoid, simply buy the 900MHz model. ;-)
>> Just kidding, we are pretty happy with what we've got. Thou shalt not
>> envy ... Except we'll need more of those some day.
>
>I did like your original idea of just pressing DECT phones into service as a
>poor-man's wireless intercom... <$100 for two "beltpacks," the base, and
>headsets! (...and you even get your choice of rechargeable "AA" or
>alkalines...!)
Our beltpacks use either rechargeable Li-Ion or "AA" alkalines. ;-)
Joel Koltner
news:jph8u6tuc3s2cet67...@4ax.com...
> Nah, they work fine. If you're paranoid, simply buy the 900MHz model. ;-)
I'd have to admit that 900MHz is actually a pretty good band right about now.
> Our beltpacks use either rechargeable Li-Ion or "AA" alkalines. ;-)
We've spent a lot of time discussing various battery approaches -- the one you
have, where you can snap in your choice is a good idea, IMO... at least once
you've decided not to go with the "sled" approach (which has its own pros and
cons). If you really want to get fancy, perhaps you can license that
Microsoft idea that mechanically makes it so that the orientation of the AA's
doesn't even matter, i.e., it's impossible to put the cells in "backwards!"
Have you had many requests for really-small listen-only belt/bodypacks? I was
talking to a guy who works for a production company last week, and he was
saying he wished their wireless intercom suppliers would offer such an option.
---Joel
Joerg
> "Joerg" <inv...@invalid.invalid> wrote in message
> news:94irrk...@mid.individual.net...
>> I try to avoid any opamp that isn't in industry standard pinout.
>
> Yes, certainly a good idea. What I've been finding lately in that,
> while there's a small number of places making variable-gain amplifiers
> in SO-8 packages, none of the manufacturers seemed to have bothered to
> use the same footprint as the other ones... :-( -- I expect the same is
> true for many "non-generic" amplifiers -- e.g., instrumentation op-amps,
> fully differential amps, etc.
>
That's one reason I like PIN diodes. You can get some with at least
1usec carrier lifetime for around 5c a pop. With lots of manufacturers
competing.
>> Oh yeah, should I tell our pastor already? :-)
>
> Mmm... perhaps not quite yet! ;-)
>
> Hopefully you have lots of, e.g., WiFi access points and other 2.4GHz
> stuff running so that life is made that much harder for Keith's units. :-)
>
It has to be large-signal tolerant. Someone might plop their laptop
right on the rack with antennas sticking out and forget to turn WLAN
off. For a slide show or something. Some people don't even know how to
turn that off, or even that it can be turned off. Luckily our stuff runs
at UHF and the pastor's mike at VHF.
But I did have two phone systems here at 2.45GHz. One from Cincinnatti
Microwave (that was the best, almost had a mil-spec feel to it) and
another was AT&T branded. Both worked happily right next to a laptop
with the WLAN going.
>> Just kidding, we are pretty happy with what we've got. Thou shalt not
>> envy ... Except we'll need more of those some day.
>
> I did like your original idea of just pressing DECT phones into service
> as a poor-man's wireless intercom... <$100 for two "beltpacks," the
> base, and headsets! (...and you even get your choice of rechargeable
> "AA" or alkalines...!)
>
Yes, although alkalines require frequent opening and DECT phones have a
tough to open battery compartment. So its doesn't pop open upon every
tumble.
k...@att.bizzzzzzzzzzzz
<zapwireD...@yahoo.com> wrote:
><k...@att.bizzzzzzzzzzzz> wrote in message
>news:jph8u6tuc3s2cet67...@4ax.com...
>> Nah, they work fine. If you're paranoid, simply buy the 900MHz model. ;-)
>
>I'd have to admit that 900MHz is actually a pretty good band right about now.
>
>> Our beltpacks use either rechargeable Li-Ion or "AA" alkalines. ;-)
>
>We've spent a lot of time discussing various battery approaches -- the one you
>have, where you can snap in your choice is a good idea, IMO... at least once
>you've decided not to go with the "sled" approach (which has its own pros and
>cons). If you really want to get fancy, perhaps you can license that
>Microsoft idea that mechanically makes it so that the orientation of the AA's
>doesn't even matter, i.e., it's impossible to put the cells in "backwards!"
Hadn't seen that. I've seen shoulders around the '+' cap, but nothing that I
thought was all that inventive.
>Have you had many requests for really-small listen-only belt/bodypacks? I was
>talking to a guy who works for a production company last week, and he was
>saying he wished their wireless intercom suppliers would offer such an option.
Not that I know of. We do make a version that is listen mostly[*] (only uses
one TDMA slot for however many listen-mostly belts you want to run). You're
still buying the whole enchilada, though.
[*] Only one allowed to talk and he doesn't get the proper mix-minus signal so
it's not the same as full-duplex.
k...@att.bizzzzzzzzzzzz
We do pretty well unless the area is simply saturated with LANs. There was an
issue in the MN Metro-Dome with some AT&T gear (cell, not 2.4GHz stuff), I
think it was. They had to turn their equipment off but I think they're going
900MHz anyway.