NJ7P SQL Tube Database Query

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6BA6
Remote-Cutoff Pentode

EIA Base & Outline

Substitute Data

Preferred Substitutes ......................... 6BD6 5749 6660
Substitutes ................................... 6HR6 6CG6
Source ........................................ RCA RC-29 - 1975

Application

Source ........................................ RCA RC-29 - 1975
Miniature type used as rf amplifier in standard broadcast and FM receivers, as well as in wide-band, high-frequency applications. This type is similar in performance to metal type 6SG7.

Source ........................................ RCA RC-29 - 1975
The low value of grid-plate capacitance minimizes regenerative effects, while the high transconductance makes possible high signal-t-noise ratio. Requires miniature 7-contact socket and may be mounted in any position.

Mechanical Data

Source ........................................ RCA RC-29 - 1975
Bulb .......................................... T-5 1/2
Base Type ..................................... Miniature Button 7-Pin
EIA Outline ................................... 5-2
EIA Base ...................................... 7BK
Cathode ....................................... Coated Unipotential
Mounting Position ............................. Any

Electrical Data

Source ........................................ RCA RC-29 - 1975
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.3 A
Maximum Heater-Cathode Voltage ................ 100 V

Direct Interelectrode Capacitances (approx)

Pentode
Source ........................................ RCA RC-29 - 1975
Shielded Unshielded
Input ......................................... 5.5 5.5 pf
Output ........................................ 5 5.5 pf
Grid to Plate ................................. 0.0035 0.0035 pf

Maximum Ratings (Design Center Values)

Pentode
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 330 V
Grid No. 2 Voltage ............................ 330 V
Plate Dissipation ............................. 3.4 W
Grid No. 2 Dissipation ........................ 0.7 W

Characteristics and Typical Operation

Class A Amplifier
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 250 V
Grid No. 2 Voltage ............................ 100 V
Grid No. 1 Voltage ............................ 55 V
Grid No. 1 Voltage Derived from
Grid No. 1 Resistor ........................ 0 Ω
Cathode Bias Resistor ...................... 68 Ω
Plate Resistance (approx) ..................... 1M Ω
Transconductance .............................. 4400 µ
Plate Current ................................. 11 mA
Grid No. 2 Current ............................ 4.2 mA
Grid No. 1 Voltage for Ib ..................... 40 µa @ -20 V

Class A Amplifier
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 100 V
Grid No. 2 Voltage ............................ 100 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 68 Ω
Plate Resistance (approx) ..................... 250K Ω
Transconductance .............................. 4300 µ
Plate Current ................................. 10.8 mA
Grid No. 2 Current ............................ 4.4 mA
Grid No. 1 Voltage for Ib ..................... 40 µa @ -20 V

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

Tue, 28 Mar 2023 22:52:29 -0700