Arrays and quads

[Steven Varner]

Hi diy,

Arrays ---   
I've been thinking about the exp. current sorce thing some more...
There seem to be quite a number of transistor arrays as Rick pointed out 
in an old post. (Subject: Re: Substrate temperature stabilized;  Date: 
Thu, 08 Jun 1995).  There is a CA3096 N-P-N/P-N-P Transistor Array.  How 
many transistors are there and how are they arranged?  I thought that 
maybe if the PNP and NPN parts are separate (and had matched PNP-PNP and 
NPN-NPN pairs) one could build a dual Electronotes option 1 - option 2 
module.  It's probably too much to hope for...

Also, are there any PNP arrays? (see EP2015 at end of this post)  Retail 
sources?

Quad transistors ---   
Don Tillman, in response to Joachim Verghese's comment re.MPQ2222 quad 
transistors, said "As far as I know, the transistors in this device are 
not on the same substrate and not matched."
Does anyone know if this is the case?  Mouser carries MPQ3904's and 
3906's.  If they were matched and not simply four unmatched trans in 
series, they would be possible alternates to MAT's.

-----
I found the following site: 

http://www.elantec.com/PRODUCT/pdf/arrays.html


and did a search also for the EP2015:

http://www.ee.washington.edu/eeca/models/elantec.txt

where I found:

* EP2015 Model
*
* Connections     q1c 
*                  |  q1b 
*                  |   |  q1e 
*                  |   |   |  q2c 
*                  |   |   |   |  q2b 
*                  |   |   |   |   |  q2e 
*                  |   |   |   |   |   |  q3c 
*                  |   |   |   |   |   |   |  q3b 
*                  |   |   |   |   |   |   |   |  q3e 
*                  |   |   |   |   |   |   |   |   |  q4c 
*                  |   |   |   |   |   |   |   |   |   |  q4b 
*                  |   |   |   |   |   |   |   |   |   |   |  q4e
*                  |   |   |   |   |   |   |   |   |   |   |   |
.subckt EP2015/EL  1   2   3   7   6   5   8   9   10  14  13  12 
*
* Models 
*
.model ep2015 pnp (is=8e-15 bf=300 va=47 ikf=30mA xtb=1.3 br=4.5 
tf=0.3nS 
+tr=280nS rb=230 rc=170 ise=1e-15 ne=1.24 ccs=2pF cjc=3.7pF pc=0.5 
+mc=0.45 cje=5.4pF pe=0.6 me=0.33 ptf=15)
* 
* Transistors 
*
q1  1   2   3 ep2015
q2  7   6   5 ep2015
q3  8   9  10 ep2015
q4 14  13  12 ep2015
* 
.ends

Make any sense?

Steve