At the Industrial Fair in
April new junction transistors appeared:
TELEFUNKEN showed the OC603
(low-noise) and OC604 for small power uses.
TEKADE showed up with the
GFT20 (junction type ) and some GST-1 and GST-2 point-contact devices.
VALVO presents the OC72
(small power amplifier). Power dissipation for OC70, OC71 were exceeded to
S.A.F. has junction types
OC110, OC120, OC 130.
SIEMENS produces TF65
(universal application like CK722 ).
General purpose transistors
sell for DM 13,75 ($ 3.25 )
In fall of 1955 many
medium-power-transistors appeared :
TELEFUNKEN came with the
X-125, X-122, X-120 (15 watts ).
SIEMENS & HALSKE had
the TF75 ( 250 mW ) and TF85 ( 4 watts )
Still no RF – transistors