8-pin SIL dual op amps

Gareth Magennis

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Mar 1, 2013, 7:06:13 AM3/1/13

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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.

Kripton

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Mar 1, 2013, 7:10:39 AM3/1/13

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On 2013-03-01 13:06:13 +0100, "Gareth Magennis"

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

Gareth Magennis

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Mar 1, 2013, 7:12:37 AM3/1/13

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<Kripton> wrote in message news:51309abf$0$21936$426a...@news.free.fr...

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

Thanks, but the 8.50 euro shipping is though.

Gareth.

Phil Allison

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Mar 1, 2013, 8:20:56 AM3/1/13

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"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

Gareth Magennis

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Mar 1, 2013, 8:44:42 AM3/1/13

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"Phil Allison" <phi...@tpg.com.au> wrote in message
news:apbo9t...@mid.individual.net...

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.

Arfa Daily

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Mar 1, 2013, 9:05:27 PM3/1/13

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"Gareth Magennis" <sound....@btconnect.com> wrote in message
news:47ydnaKDUKNTBK3M...@bt.com...

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

Jamie

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Mar 1, 2013, 9:24:47 PM3/1/13

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

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

Phil Allison

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Mar 1, 2013, 11:47:04 PM3/1/13

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"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.

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

.... Phil

N_Cook

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Mar 2, 2013, 4:12:44 AM3/2/13

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Arfa Daily <arfa....@ntlworld.com> wrote in message
news:J7dYs.187582$jy5.1...@fx17.fr7...

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

Gareth Magennis

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Mar 2, 2013, 6:42:51 AM3/2/13

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"Arfa Daily" wrote in message news:J7dYs.187582$jy5.1...@fx17.fr7...

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.

Gareth Magennis

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Mar 2, 2013, 7:30:06 AM3/2/13

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Here it is:

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

Gareth.

stra...@yahoo.com

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Mar 4, 2013, 11:16:50 PM3/4/13

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On Mar 2, 4:30 am, "Gareth Magennis" <gareth.magen...@ntlworld.com>
wrote:
> Here it is:
>
> http://cimarrontechnology.com/silsingle-to-dualop-ampadapterpn040701....
>
> Gareth.

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

G²

varie...@yahoo.co.uk

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Mar 30, 2013, 7:00:48 AM3/30/13

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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).