[sdiy] Quad transistor sources

[James Patchell]

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
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