NJ7P SQL Tube Database Query

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6CA7
Power Pentode

EIA Base & Outline

Application

Source ........................................ RCA RC-29 - 1975
Glass octal type used in the output stage of audio-frequency amplifiers. Requires octal socket.

Mechanical Data

Source ........................................ RCA RC-29 - 1975
Bulb .......................................... MT-10
Base Type ..................................... Metal Octal 8-Pin
Maximum Overall Height ........................ 4.438 In.
Maximum Seated Height ......................... 3.875 In.
Maximum Diameter .............................. 1.500 In.
EIA Base ...................................... 8ET
Cathode ....................................... Coated Unipotential
Mounting Position ............................. Any

Electrical Data

Source ........................................ RCA RC-29 - 1975
Heater Voltage ................................ 6.3 V
Heater Current ................................ 1.5 A

Direct Interelectrode Capacitances (approx)

Pentode
Source ........................................ RCA RC-29 - 1975
Input ......................................... 15.5 pf
Output ........................................ 7.2 pf
Grid to Plate ................................. 1 pf

Maximum Ratings (Design Center Values)

Pentode
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 800 V
Grid No. 2 Voltage ............................ 425 V
Plate Dissipation ............................. 25 W
Grid No. 2 Dissipation ........................ 8 W

Characteristics and Typical Operation

Class A Amplifier
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 250 V
Grid No. 2 Voltage ............................ 250 V
Grid No. 1 Voltage ............................ -13.5 V
Plate Resistance (approx) ..................... 15000 Ω
Transconductance .............................. 11000 µ
Plate Current ................................. 100 mA
Grid No. 2 Current ............................ 15 mA
Load Resistance ............................... 2K Ω
Power Output (approx) ......................... 11 W

Push Pull Class AB1 Amplifier
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 450 V
Grid No. 2 Voltage ............................ 450 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 232 Ω
Plate Current ................................. 120 mA
Grid No. 2 Current ............................ 20 mA
Load Resistance ............................... 6500 Ω
Power Output (approx) ......................... 40 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

Mon, 04 Jul 2022 16:52:07 -0700