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Source ........................................ RCA RC-29 - 1975
Miniature type used in color and black-and-white television receiver applications and as output tube in audio-amplifier applications. Requires miniature 9-contact socket.
Source ........................................ RCA RC-29 - 1975
Bulb .......................................... T-9 Special
Base Type ..................................... Same as Miniature Button 9-pin Except Diameter of Bulb
EIA Outline ................................... 9-71
Maximum Diameter .............................. 1-1/8 In.
EIA Base ...................................... 9EU
Cathode ....................................... Coated Unipotential
Mounting Position ............................. Any
Source ........................................ RCA RC-29 - 1975
Heater Voltage ................................ 6.3 V
Heater Current ................................ 1.2 A
Beam Pentode
Source ........................................ RCA RC-29 - 1975
Input ......................................... 18 pf
Output ........................................ 7 pf
Grid to Plate ................................. 0.9 pf
Beam Pentode
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 220 V
Grid No. 2 Voltage ............................ 140 V
Plate Dissipation ............................. 12 W
Grid No. 2 Dissipation ........................ 1.4 W
Class A Amplifier
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 110 V
Grid No. 2 Voltage ............................ 110 V
Grid No. 1 Voltage ............................ -7.5 V
Peak Grid No. 1 Voltage........................ 7.5 V
Plate Resistance (approx) ..................... 13K Ω
Transconductance .............................. 8000 µ
Plate Current (Zero Signal) ................... 49 mA
Plate Current (Maximum Signal) ................ 50 mA
Grid No. 2 Current (Zero Signal) .............. 4 mA
Grid No. 2 Current (Maximum Signal) ........... 10 mA
Load Resistance ............................... 2K Ω
Power Output (approx) ......................... 2.1 W
Class A Amplifier
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 200 V
Grid No. 2 Voltage ............................ 125 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 180 Ω
Peak Grid No. 1 Voltage........................ 8.5 V
Plate Resistance (approx) ..................... 28K Ω
Transconductance .............................. 8000 µ
Plate Current (Zero Signal) ................... 46 mA
Plate Current (Maximum Signal) ................ 47 mA
Grid No. 2 Current (Zero Signal) .............. 2.2 mA
Grid No. 2 Current (Maximum Signal) ........... 8.5 mA
Load Resistance ............................... 4K Ω
Power Output (approx) ......................... 3.8 W
If you are uncertain about the EIA designator for a particular tube please use the "Index" button to list all the tubes in the database. You can click on the designator for the closest tube.
(c) 1994-2021 by William A. Beech, NJ7P
Fri, 24 Jun 2022 18:14:32 -0700