> Hello Group,
> I have exausted all of my extensive resources in search for a Motorola
> MJE720 transistor in a TO-126 case for a 400 watt per channel BGW 750C power
> amp. I am having absolutely NO luck finding any info on it.
> Does ANYONE have a source or as a LAST resort a legitimate sub.
> It is functioning as the bias transistor with 300 volt MJE340 and MJE350
> complimentary devices as pre-drivers in the same case style which I had no
> trouble obtaining data for.
> Any info would be appreciated.
>
In an old transistor database I find:
MJE 720
NPN
VCEmax=40V
VCBmax=40V
VEBmax=5V
ICmax =1.5A
Ptot 2W (is this an error in the database? The first replacement is
a 20W type)
hfe>=40
Hfe bias=0.15A (so hFE=10 ?; can we trust this data?)
first replacement BD169
second replacement 2N4923
/-------\
connection [ E C B ]
regards, Harry
--
Author: H.C. Croon
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