NJ7P SQL Tube Database Query

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6AC7GT
Sharp-Cutoff Pentode

EIA Base & Outline

Substitute Data

Preferred Substitutes ......................... 6AJ7 6134 1852
Substitutes ................................... 6AB7 6SK7 6SD7
Source ........................................ RCA RC-15 - 1947

Application

Source ........................................ RCA RC-15 - 1947
Metal type used in rf and if stages or picture amplifier and the first stages of the video amplifier of television receivers. It is also used as a mixer or oscillator tube in low-frequency applications. Tube requires octal socket. When tube is used as

Source ........................................ RCA RC-15 - 1947
Tube requires octal socket. When tube is used as a high-gain audio amplifier, heater should be operated from a battery source.

Mechanical Data

Source ........................................ RCA RC-15 - 1947
Bulb .......................................... T-9
EIA Outline ................................... 9-11
EIA Base ...................................... 8N
Cathode ....................................... Coated Unipotential
Mounting Position ............................. Any

Electrical Data

Source ........................................ RCA RC-15 - 1947
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.45 A
Maximum Heater-Cathode Voltage
Heater Positive with Respect to Cathode
DC Component ............................ 90 V
Heater Negative with Respect to Cathode
DC Component ............................ 90 V

Direct Interelectrode Capacitances (approx)

Pentode
Source ........................................ RCA RC-15 - 1947
Input ......................................... 11.5 pf
Output ........................................ 5.5 pf
Grid to Plate ................................. 0.02 pf

Maximum Ratings (Design Center Values)

Pentode
Source ........................................ RCA RC-15 - 1947
Plate Voltage ................................. 300 V
Grid No. 3 Voltage ............................ 0 V
Grid No. 2 Supply Voltage ..................... 300 V
Grid No. 2 Voltage ............................ 60K V
Plate Input ................................... 160 W
Plate Dissipation ............................. 3.0 W
Grid No. 2 Dissipation ........................ 0.38 W
Grid No. 1 Circuit Resistance
Self Bias .................................. 250K Ω

Characteristics and Typical Operation

Class A Amplifier
Source ........................................ RCA RC-15 - 1947
Plate Voltage ................................. 300 V
Grid No. 3 Voltage ............................ 0 V
Grid No. 2 Voltage ............................ 150 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 160 Ω
Plate Resistance (approx) ..................... 1M Ω
Transconductance .............................. 9000 µ
Plate Current ................................. 10 mA
Grid No. 2 Current ............................ 2.5 mA

Class A Amplifier
Source ........................................ RCA RC-15 - 1947
Plate Voltage ................................. 300 V
Grid No. 3 Voltage ............................ 0 V
Grid No. 2 Voltage ............................ 300 V
Grid No. 2 Dropping Resistor .................. 60K Ω
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 160 Ω
Plate Resistance (approx) ..................... 1M Ω
Transconductance .............................. 9000 µ
Plate Current ................................. 10 mA
Grid No. 2 Current ............................ 2.5 mA

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, 27 Jun 2022 11:31:44 -0700