NJ7P SQL Tube Database Query

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A horizontal ribbon.

6CL8A
Medium-Mu Triode - Sharp-Cutoff Tetrode

EIA Base & Outline

EIA Base: 9FXEIA Bulb: 6-2

Substitute Data

Substitutes ................................... 6BR8 6FV8 6JN8
Source ........................................ RCA RC-29 - 1975

Application

Source ........................................ RCA RC-29 - 1975
Miniature type used as combined vhf oscillator and mixer in color and black-and-white television receivers.

Mechanical Data

Source ........................................ RCA RC-29 - 1975
Bulb .......................................... T-6 1/2
Base Type ..................................... Miniature Button 9-Pin
EIA Outline ................................... 6-2
EIA Base ...................................... 9FX
Cathode ....................................... Coated Unipotential
Mounting Position ............................. Any

Electrical Data

Source ........................................ RCA RC-29 - 1975
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.45 A

Direct Interelectrode Capacitances (approx)

Tetrode
Source ........................................ RCA RC-29 - 1975
Input ......................................... 5 pf
Output ........................................ 2 pf
Grid to Plate ................................. 0.02 pf

Triode
Source ........................................ RCA RC-29 - 1975
Input ......................................... 2.8 pf
Output ........................................ 1.5 pf
Grid to Plate ................................. 1.8 pf

Maximum Ratings (Design Center Values)

Tetrode
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 330 V
Grid No. 2 Voltage ............................ 330 V
Plate Dissipation ............................. 3.0 W
Grid No. 2 Dissipation ........................ 0.55 W

Triode
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 330 V
Plate Dissipation ............................. 2.5 W

Characteristics and Typical Operation

Triode Class A Amplifier
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 300 V
Amplification Factor .......................... 40
Plate Resistance (approx) ..................... 5K Ω
Transconductance .............................. 8000 µMho
Plate Current ................................. 15 mA

Tetrode Class A Amplifier
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 300 V
Grid No. 2 Voltage ............................ 300 V
Grid No. 1 Voltage ............................ -1 V
Plate Resistance (approx) ..................... 100K Ω
Transconductance .............................. 6400 µMho
Plate Current ................................. 12 mA
Grid No. 2 Current ............................ 4 mA

Triode Class A Amplifier
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 125 V
Grid No. 1 Voltage ............................ -1.0 V
Amplification Factor .......................... 40
Plate Resistance (approx) ..................... 5K Ω
Transconductance .............................. 8000 µMho
Plate Current ................................. 14 mA

Pentode Class A Amplifier
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 125 V
Grid No. 2 Voltage ............................ 125 V
Grid No. 1 Voltage ............................ -1.0 V
Plate Resistance (approx) ..................... 200K Ω
Transconductance .............................. 6500 µMho
Plate Current ................................. 12 mA
Grid No. 2 Current ............................ 4 mA

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Thu, 11 Aug 2022 14:52:48 -0700