[sdiy] Matched Trannies

[Duane R Balvage]

Hello -

Anyone tried the MPS (or is it MPQ?) 2907 PNP transistor array?

It is 4 PNP transistors in a 16-pin DIL package. Looks like this:



	+-------+
	| *	|
   c1	+	+ e1
 	|	|
   c1	+	+ b1
   	|	|
   c2	+	+ e2
	|	|
   c2	+	+ b2
	|	|
   c3	+	+ e3
	|	|
   c3	+	+ b3
	|	|
   c4	+	+ e4
	|	|
   c4	+	+ b4
	|	|
	+-------+

Vceo: 40 
Min. hFE at Ic: 100 @ 150mA 
Min. ft (MHz): 200 
Collector-Emitter Saturation Voltage :	IC = 150 mA, IB = 15 mA  0.4v
					IC = 500 mA, IB = 50 mA  1.6v

Is this useful in expo converters? Or do you think the transistors aren't matched well
enough?
The should be pretty well thermally matched (encased in the same epoxy substrate...)

			-Duane

	


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