[sdiy] Quad transistor sources

[Ray Wilson]

I learn something new everytime I read the mail! Thanks for turning me on to
the THAT corporation. There transistor arrays are cheaper than what I was
buying before.

Ray

----- Original Message ----- 
From: "James Patchell" <patchell at cox.net>
To: <synth-diy at dropmix.xs4all.nl>
Sent: Sunday, June 27, 2004 5:40 PM
Subject: Re: [sdiy] Quad transistor sources


> Also, if you want premium matched parts, THAT Corp (
> http://www.thatcorp.com ) has them in either dip or soic.
>
> THAT300 quad matched NPN
> THAT320 quad matched PNP
> THAT340 dual PNP/NPN pairs
>
> These parts are dialectically issolated.
>
> These are all made on the same die, unlike the MPQ sieries, and they are
> matched in VBE and HFE.
>
> They have a moderate bulk resistance (2 ohms), and while they will work
for
> expo converters, the MAT series from Analog devices is better.
>
> However, I will say, the MPQ series works pretty good for a lot of
> applications.  And are a lot less expensive (the THAT parts run somewhere
> between 3 and 4 each, I think).
>
> At 01:21 AM 6/28/2004 +0200, karl dalen wrote:
> >Did you know that the very standard single
> >transistors 2n3904 and 2n2907 are available
> >as four in a soic16!! And that there also
> >are a 2npn by 2 pnp in a soic 16
> >
> >MMPQ2907 4x pnp
> >MMPQ3904 4x npn
> >MMPQ6700 2x npn (2n3904) and 2x pnp (2n3906)
> >
> >There are several manufacturers for these
> >e.g Central Semiconductor, Fairchild, etc.
> >
> >Reg
> >KD. (sounding like a sales man!!)
> >
> >Höstrusk och grå moln - köp en resa till solen på Yahoo! Resor på
adressen
> >http://se.docs.yahoo.com/travel/index.html
>
>          -Jim
> ***************************************************************
> http://www.oldcrows.net/~patchell
>
> ***************************************************************
>
>
>