NJ7P SQL Tube Database Query

A horizontal ribbon.

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A horizontal ribbon.

6CW4
High-Mu Triode

EIA Base & Outline

EIA Base: 12AQEIA Bulb: 4-4

Substitute Data

Preferred Substitutes ......................... 6DS4
Source ........................................ RCA RC-29 - 1975

Application

Source ........................................ RCA RC-29 - 1975
Nuvistor type used as a grounded-cathode, neutralized rf amplifier in vhf tuners of color and black-and-white television and FM receivers. Requires nuvistor socket.

Mechanical Data

Source ........................................ RCA RC-29 - 1975
Bulb .......................................... MT-4
EIA Outline ................................... 4-4
EIA Base ...................................... 12AQ

Electrical Data

Source ........................................ RCA RC-29 - 1975
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.135 A

Direct Interelectrode Capacitances (approx)

Triode
Source ........................................ RCA RC-29 - 1975
Input ......................................... 4.3 pf
Output ........................................ 1.8 pf
Grid to Plate ................................. 0.92 pf

Maximum Ratings (Design Center Values)

Triode
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 300 V
Plate Dissipation ............................. 1.5 W

Characteristics and Typical Operation

Class A Amplifier
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 110 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 130 Ω
Amplification Factor .......................... 65
Plate Resistance (approx) ..................... 6600 Ω
Transconductance .............................. 9800 µMho
Plate Current ................................. 7 mA

Class A Amplifier
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 70 V
Grid No. 1 Voltage ............................ 0 V
Amplification Factor .......................... 68
Plate Resistance (approx) ..................... 5.44K Ω
Transconductance .............................. 12.5K µMho
Plate Current ................................. 8 mA

A horizontal ribbon.

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A horizontal ribbon.

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Tue, 31 Jan 2023 09:31:27 -0700