SANYO 2SB22 PNP Germanium transistors from the 70's
Lote of 10 transistors
hfe varies between 230 and 286 - The readings were taken on a basic DCK KD615 digital multimeter.
So these are just reference values to make sure all of them are in good condition and to make sure they have similar gain.
Quoted
from the 1968 edition Handbook
SANYO Semiconductor:
PNP germanium alloy junction transistor amplifier for low-power low-frequency (SANYO)
hfe Min 67 Max 275 Typ 100
(VCE-1.5V, IC-100mA)
Color code:
67-110 green orange 90-140 110-165 blue yellow 135-195 155-220 colorless red 180-275
Color code:
67-110 green orange 90-140 110-165 blue yellow 135-195 155-220 colorless red 180-275
VCBO-25V
VEBO-12V
IC-200mA
(When using the radiator R1A) PC 300mW
Tj 85 ℃
Electrical Characteristics (Ta = 25 ℃)
ICBO Max-15μA (VCB-20V)
IEBO Max-12μA (VEB-6V)
fαb Typ 1MHz (VCB-6V, IC-1mA)
VEBO-12V
IC-200mA
(When using the radiator R1A) PC 300mW
Tj 85 ℃
Electrical Characteristics (Ta = 25 ℃)
ICBO Max-15μA (VCB-20V)
IEBO Max-12μA (VEB-6V)
fαb Typ 1MHz (VCB-6V, IC-1mA)
Bom dia!
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