patchell at teletrac.com
Tue Jan 26 16:43:09 CET 1999
According to the data sheet I got from Motorolla for the MPQ2907, there is no
spec for Vbe matching, which leads me to believe that it is just four transistor
chips bonded in one package. Most likely they will be connected fairly well
thermally. I was considering buying a batch and seeing if it was posible to
select them for having closely matched pairs. Jameco has them listed in their
catalog for about $0.45 each in 100's.
Donald Johnson wrote:
> Future/Active here in Canada sell quad 2N2907(PNP)/2N2222(NPN) in 14 pin dips.
> They also have quad 2N3906/2N3904 in the same 14 pin dip package. The 2N
> prefix seems to be replaced with MPQ. (e.g. MPQ2907) I don't know if they
> merely 4 transistors packaged in a single dip, or if they are on a single
> chip, etc. I'll try to dig up some information. Anyone else seen or used them?
> ( ( don johnson ) )
> \ \ / /
> ) ) ) donaldj at infomatch.com ( ( (
> / / \ \
> ( ( - ) )
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