8-pin SIL dual op amps

  • Thread starter Gareth Magennis
  • Start date
G

Gareth Magennis

Guest
Hi,

anyone know of a reasonably easy to obtain 8-pin SIL op-amp?
Trying to replace an NJM072BL, but these are difficult/expensive to find in
the UK.

Any dual op-amp will do.



Cheers,


Gareth.
 
On 2013-03-01 13:06:13 +0100, "Gareth Magennis"
<sound.service@btconnect.com> said:

Hi,

anyone know of a reasonably easy to obtain 8-pin SIL op-amp?
Trying to replace an NJM072BL, but these are difficult/expensive to find in
the UK.

Any dual op-amp will do.



Cheers,


Gareth.
Click to expand...
http://www.ebay.com/itm/dual-opamp-sil-8-pettine-BA-15218N-BA15218N-/271084480003?pt=Componenti_elettronici_attivi&hash=item3f1de4e603

not

*that* expensive ?
--
----------
Kripton

the ESR Repository @ http://kripton2035.free.fr/esr-repository.html
the Geiger Repository @ http://kripton2035.free.fr/geiger-repositor.html
 
<Kripton> wrote in message news:51309abf$0$21936$426a74cc@news.free.fr...
On 2013-03-01 13:06:13 +0100, "Gareth Magennis"
sound.service@btconnect.com> said:

Hi,

anyone know of a reasonably easy to obtain 8-pin SIL op-amp?
Trying to replace an NJM072BL, but these are difficult/expensive to find
in
the UK.

Any dual op-amp will do.



Cheers,


Gareth.

http://www.ebay.com/itm/dual-opamp-sil-8-pettine-BA-15218N-BA15218N-/271084480003?pt=Componenti_elettronici_attivi&hash=item3f1de4e603

not
*that* expensive ?
--
----------
Kripton
Click to expand...


Thanks, but the 8.50 euro shipping is though.




Gareth.
 
"Gareth Magennis"
anyone know of a reasonably easy to obtain 8-pin SIL op-amp?
Trying to replace an NJM072BL, but these are difficult/expensive to find
in the UK.
Click to expand...
** The NJM4558L should do:

http://www.synthdiy.com/files/2006/NJM4558_ae04052.pdf

Beware, there is also an " S " version with 9 pins.

http://www.littlediode.com/datasheets/pdf/Datasheets-NJM/NJM4558S.PDF

Lop pin 1 off and you are sweet.

The BJT4558 has a lower noise floor than the BiFET 072.




.... Phil
 
"Phil Allison" <phil_a@tpg.com.au> wrote in message
news:apbo9tFcma0U1@mid.individual.net...
"Gareth Magennis"

anyone know of a reasonably easy to obtain 8-pin SIL op-amp?
Trying to replace an NJM072BL, but these are difficult/expensive to find
in the UK.


** The NJM4558L should do:

http://www.synthdiy.com/files/2006/NJM4558_ae04052.pdf

Beware, there is also an " S " version with 9 pins.

http://www.littlediode.com/datasheets/pdf/Datasheets-NJM/NJM4558S.PDF

Lop pin 1 off and you are sweet.

The BJT4558 has a lower noise floor than the BiFET 072.




... Phil
Click to expand...


Thanks for that Phil, can get those cheap enough on ebay.

I guess this was never a popular package? I see them in Soundcraft mixers
where the packed narrow channel width makes sense to use them, but not in
much else.
(Yamaha Q2031 graphic uses a 4570 in similar package)
http://pdf1.alldatasheet.com/datasheet-pdf/view/6770/NEC/UPC4570.html


Cheers,


Gareth.
 
"Gareth Magennis" <sound.service@btconnect.com> wrote in message
news:47ydnaKDUKNTBK3MnZ2dnUVZ8uudnZ2d@bt.com...
Hi,

anyone know of a reasonably easy to obtain 8-pin SIL op-amp?
Trying to replace an NJM072BL, but these are difficult/expensive to find
in the UK.

Any dual op-amp will do.



Cheers,


Gareth.
Click to expand...
On occasion, when I've been stuck, I've flattened out the pins, dead-cat
style. on a standard DIL TL072, then stood it up. You can get four of the
pins from one side straight into four of the holes in the board. The
remaining four can be hooked to the other four board holes, with thin
etch-revision wire.

Arfa
 
Arfa Daily wrote:

"Gareth Magennis" <sound.service@btconnect.com> wrote in message
news:47ydnaKDUKNTBK3MnZ2dnUVZ8uudnZ2d@bt.com...

Hi,

anyone know of a reasonably easy to obtain 8-pin SIL op-amp?
Trying to replace an NJM072BL, but these are difficult/expensive to
find in the UK.

Any dual op-amp will do.



Cheers,


Gareth.


On occasion, when I've been stuck, I've flattened out the pins, dead-cat
style. on a standard DIL TL072, then stood it up. You can get four of
the pins from one side straight into four of the holes in the board. The
remaining four can be hooked to the other four board holes, with thin
etch-revision wire.

Arfa
That's cheating! but in any case, I've done something like that before.
Click to expand...

I used pre-etched perf board with a male header pins solder on the edge
so to match up the original and put a replacement part that would work
on a daughter board.

I've also done things like this when making modifications to
electronics. :) Remove chip, insert daughter board.

Jamie
 
"Gareth Magennis"
"Phil Allison"
"Gareth Magennis"

anyone know of a reasonably easy to obtain 8-pin SIL op-amp?
Trying to replace an NJM072BL, but these are difficult/expensive to find
in the UK.


** The NJM4558L should do:

http://www.synthdiy.com/files/2006/NJM4558_ae04052.pdf

Beware, there is also an " S " version with 9 pins.

http://www.littlediode.com/datasheets/pdf/Datasheets-NJM/NJM4558S.PDF

Lop pin 1 off and you are sweet.

The BJT4558 has a lower noise floor than the BiFET 072.


Thanks for that Phil, can get those cheap enough on ebay.

I guess this was never a popular package? I see them in Soundcraft mixers
where the packed narrow channel width makes sense to use them, but not in
much else.
Click to expand...

** IME, Soundcraft " Spirit " desks often use the 9 pin NJM072S - the
doubled " + " pins connecting the +15V track around the PCB.



..... Phil
 
Arfa Daily <arfa.daily@ntlworld.com> wrote in message
news:J7dYs.187582$jy5.105525@fx17.fr7...
"Gareth Magennis" <sound.service@btconnect.com> wrote in message
news:47ydnaKDUKNTBK3MnZ2dnUVZ8uudnZ2d@bt.com...
Hi,

anyone know of a reasonably easy to obtain 8-pin SIL op-amp?
Trying to replace an NJM072BL, but these are difficult/expensive to find
in the UK.

Any dual op-amp will do.



Cheers,


Gareth.


On occasion, when I've been stuck, I've flattened out the pins, dead-cat
style. on a standard DIL TL072, then stood it up. You can get four of the
pins from one side straight into four of the holes in the board. The
remaining four can be hooked to the other four board holes, with thin
etch-revision wire.

Arfa
Click to expand...
I have a small pile of surface mount JRC 4560 for that sort of bodging,
stagger
setting of the pins makes soldering to wires easy
 
"Arfa Daily" wrote in message news:J7dYs.187582$jy5.105525@fx17.fr7...



"Gareth Magennis" <sound.service@btconnect.com> wrote in message
news:47ydnaKDUKNTBK3MnZ2dnUVZ8uudnZ2d@bt.com...
Hi,

anyone know of a reasonably easy to obtain 8-pin SIL op-amp?
Trying to replace an NJM072BL, but these are difficult/expensive to find
in the UK.

Any dual op-amp will do.



Cheers,


Gareth.
Click to expand...
On occasion, when I've been stuck, I've flattened out the pins, dead-cat
style. on a standard DIL TL072, then stood it up. You can get four of the
pins from one side straight into four of the holes in the board. The
remaining four can be hooked to the other four board holes, with thin
etch-revision wire.

Arfa


I did that once too!


Before posting this thread, I did some Googling and found an 8-pin SIL
op-amp adaptor PCB onto which you could solder 2 single SMD op-amps.
(It was in the States and postage etc made it an expensive option)
Couldn't find one which you could mount a single dual device instead, which
I found a bit odd.

Can't find it now otherwise I'd post a link.



Cheers,


Gareth.
 
Here it is:

http://cimarrontechnology.com/silsingle-to-dualop-ampadapterpn040701.aspx



Gareth.
 
On Mar 2, 4:30 am, "Gareth Magennis" <gareth.magen...@ntlworld.com>
wrote:
Here it is:

http://cimarrontechnology.com/silsingle-to-dualop-ampadapterpn040701....

Gareth.
Click to expand...
You can get similar items from these guys for less and a wider
selection. I've used them and they're good

http://www.proto-advantage.com/store/index.php?cPath=2400&osCsid=8h7lmr955ouqfg9v29mkgccuc2

G˛
 
On Friday, 1 March 2013 12:06:13 UTC, Gareth Magennis wrote:
Hi,



anyone know of a reasonably easy to obtain 8-pin SIL op-amp?

Trying to replace an NJM072BL, but these are difficult/expensive to find in

the UK.

Hello there, try Cricklewood Electronics (www.cricklewoodelectronics.co.uk) or Rapid Electronics (www.rapidonline.com).

Any dual op-amp will do.







Cheers,





Gareth.
Click to expand...
 
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