Al,
Here are specs for 2SC2075 and 2SC1968 quoted from THE HIGH FREQUENCY
DEVICE MANUAL 1990 edition, CQ Publishing, Tokyo.
2SC2075 is Toshiba's HF RF power transistor.
Maximum ratings
VCBO = 80.0 V
VEBO = 4.0 V
IC = 4.0 A
PC = 10.0 W for TC=25 deg C
Tj =150.0 deg C
Electrical characteristics
ICBO = 10.0 uA(max) with VCB=30 V, IE=0
hFE1 = 25.0 (min) with VCE= 5 V, IC=0.5 A
hFE2 = 15.0 (min) with VCE= 2 V, IC=3 A
fT =100.0 MHz(typ)with VCE= 5 V, IC=500 mA
Cob = 40.0 pF(typ) with VCE=10 V, IE=0, f=1MHz
Po = 3.5 W (min) with VCC=12 V, f=27MHz, Pi=0.3 W
pin assignment is
------------
| | |===-------- E
|( ) | |===-------- C
| | |===-------- B
------------
Fin is connected with the collector
2SC1968 is Mitsubishi's >>UHF<< RF power transistor.
Po = 16.0 W (typ) with VCC=13.5 V, Pi =6 W, f=470 MHz
Since it is for UHF, most of you may not have much interest.
Therefore, I do not quote the full data for it. Those who really
want detailed spec of 2SC1968, please ask me by e-mail.
Hope this helps you.
7N3WVM
MINOWA, Makoto
QRP-L member #572.
A bigot with no Yaesu, no Kenwood and no ICOM in his shack.
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