[sdiy] CA3086 - was ARP Pots / Sequencer

[Tim Ressel]

Folks,

So I'm wondering if the 3086 would work in, say, the
ladder phasor circuit??

--tr

--- Scott Stites <scottnoanh at peoplepc.com> wrote:
> Hi Jim,
> 
> Ah yes, it's all coming back to me.  A while back, I
> made some 'big buys' (well,
> big for me) of common chips I'd need.  At the time,
> I couldn't remember which IC
> had the spec'ed transistor pair - so I guessed 3086
> when I clicked the order in. 
> 50% chance of being wrong, and wrong I was.  Should
> have stopped and checked a
> spec sheet.  And I believe the 3046 was the same
> price, if not a little cheaper. 
> Sigh.
> 
> But, as you say, it means it's not tested, not
> necessarily that it won't perform
> to the spec. I figure where the transistor matching
> spec is critical, I can drop
> in a 3046, then try a 3086 or two, and if there's no
> discernable difference, I
> can use one of the many 3086's that I have instead
> of the 3046, of which I have
> few.  
> 
> That was interesting information about the CA3045,
> BTW!
> 
> Best Regards,
> Scott
> 
> 
> 
> On Thu, 06 Mar 2003, patchell wrote:
> 
> >     No worries here...The CA3086 is just an
> untested version of the CA3046 (the
> > CA3046 is speced for VBE matching), and the CA3046
> seems to still be widely
> > available.  So, if you need a CA3086, take a look
> at the CA3046, and buy which
> > ever
> > is cheaper...I have seen the CA3086 sell for more
> than the CA3046 at some
> > places...and by the way, the CA3045 is the same as
> the CA3046 but in a Mil temp
> > range
> > (and ceramic package), although, you don't see
> that one much at all any more.
> > 
> > Scott Stites wrote:
> > 
> > > Tim Parkhurst wrote:
> > >
> > > <snip>
> > >
> > > >Also, the CA3086 transistor array ($5.18) and
> the MC1452 multivibrator
> ($3.42)
> > > >are surprisingly expensive. I think these could
> be replaced to save a few
> > > >bucks.  Of course, these are new parts. If you
> could use surplus or had a
> good
> > > >junk > box to draw from, you could save quite a
> few bucks.
> > >
> > > <un-snip>
> > >
> > > Not that it would make a decisive improvement on
> the sequencer BOM cost, but
> > > Jameco has the CA3086 for $0.49, $0.45 for 10
> and $0.39 for quantities of a
> 100
> > > or more.  That means you could get a hundred of
> them for less than what you'd
> > pay
> > > for 8 of the NTE replacements at Mouser, which
> is where I'm assuming the $5.18
> > > figure comes from.
> > >
> > > And just wondering....why does the NTE
> replacement come up at Mouser for a
> > CA3086
> > > search?  Is the CA3086 getting harder to come
> by?  Does anybody know?
> > >
> > > Cheers,
> > > Scott
> > >
> > > ________________________________________________
> > > PeoplePC:  It's for people. And it's just smart.
> > > <a
>
href="http://mail.peoplepc.com/jump/http://www.peoplepc.com">http://www.peoplepc.com</a>
> > 
> > --
> >  -Jim
> > ------------------------------------------------
> > * Visit:<a
>
href="http://mail.peoplepc.com/jump/http://www.silcom.com/~patchell">http://www.silcom.com/~patchell</a>/
> > *-----------------------------------------------
> > * Come to the Pacific Southwest DIY Meet
> > * April 12, 2003 10am-5pm
> > * Santa Barbara, CA
> > * <a
>
href="http://mail.peoplepc.com/jump/http://www.silcom.com/~patchell/synthdiymeet.html">http://www.silcom.com/~patchell/synthdiymeet.html</a>
> > * for details
> > *-----------------------------------------------
> 
> ________________________________________________
> PeoplePC:  It's for people. And it's just smart. 
> http://www.peoplepc.com 


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