Japanese duals (was: Re: CA3046,SSM2210&2220 Replacements)

[JWBarlow at aol.com]

With all this talk about trannys, I recently bought some 2N3958 (dual 
n-channel) JFETs from Alltronics (www.alltronics.com) for about $1.99 each. I 
should note that Alltronics carries a lot of surplus, so it is possible that 
these aren't up to spec. I plan to use these with VCO and ARP (4027 ladder) 
filter circuits -- does anyone have any thoughts on this device in these 
applications? Is the price OK?

John B.

In a message dated 7/13/99 7:27:30 AM, uzs159 at uni-bonn.de writes:

>At 12:42 13.07.99 +0200, Haible Juergen wrote:
>
>>Ahh, finally some Japanese data sheets online !!
>
>>Announcing this the "Good News of the Month" (;->)
>
>>
>
>>Just ordered a handful of 3381's and 1349's.
>
>>The guaranteed vbe matching specs are not overwhelming (10mV),
>
>>so maybe we still have to select them for building discreet OTAs.
>
>>But the thermal coupling (compared to selected single transistors)
>
>>and the compact size (compared to 3086's) are reason enough to
>
>>take a closer look.
>
>>
>
>>Dual JFETs ? Even p-channel ?? Affordable ?
>
>
>
>Affordable, and available!
>
>
>
>2SK389 Dual N-channel jFET (max 20mV delta Vgs)
>
>2SJ109 Dual P-channel jFET (complementary to 2SK389)
>
>
>
>>Man, I have to go on searching this page. You know what *that*
>
>>means for VCO design !
>
>
>
>Do you mean the two fet follower from the SEM ?!
>
>
>
>Bye 
>
> René
>
>
>
>
>
>             ,   : (uzs159 at uni-bonn.de)
>
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>
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>
>