[sdiy] SIP filter modules coming

[Dan Snazelle]

I agree with ian !!

I'd love to see new versions of the transistors arrays ! 


Sent from my iPhone

> On Apr 24, 2018, at 11:37 AM, Ian Fritz <ijfritz at comcast.net> wrote:
> 
> Of course, but weren’t we talking about the new ones?  Surely the improved growth and fab will also apply to them.
> 
> Ian
> 
>>> On Apr 24, 2018, at 12:52 AM, Gordonjcp <gordonjcp at gjcp.net> wrote:
>>> 
>>> On Mon, Apr 23, 2018 at 04:21:57PM -0600, Ian Fritz wrote:
>>> 
>>> 
>>>>> On Apr 23, 2018, at 2:20 PM, Gordonjcp <gordonjcp at gjcp.net> wrote:
>>>>> 
>>>>> On Mon, Apr 23, 2018 at 12:18:55PM -0700, Jay Schwichtenberg wrote:
>>>>> Don't know if you're talking about the CA3280/2164s or CA3046/CA3096s.
>>>> 
>>>> The CA3046/3096es.  They're not especially well matched, compared to
>>>> what you can get these days.
>>> 
>>> How do you know? Have you tested any? 
>> 
>> Yes, I have, albeit old ones.  I don't know how new the "newest" ones
>> are, probably not a whole lot newer.
>> 
>> Vbe and hFE are all over the place.  They are closely thermally coupled,
>> which is a help I guess.  Other than than, any two random BC548s out of
>> the bag will probably be closer matched these days.
>> 
>> -- 
>> Gordonjcp
>> 
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