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

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)

      

 

Rare Vintage CASIO FX-3 Scientific Calculator from 1975

in good working condition.

 Jose Mesquita, 2013-January

Photo Update - photos from the dust cover