NJ7P SQL Tube Database Query

A horizontal ribbon.

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A horizontal ribbon.

6CU8
Medium-Mu Triode - Sharp-Cutoff Pentode

EIA Base & Outline

EIA Base: 9GMEIA Bulb: 6-2

Substitute Data

Substitutes ................................... 6CH8
Source ........................................ RCA RC-27 - 1973

Application

Source ........................................ RCA RC-27 - 1973
Miniature type used in tv receiver applications. The pentode is used as an if amplifier, video amplifier, agc amplifier and reactance tube.

Source ........................................ RCA RC-27 - 1973
The triode is used as a low-frequency oscillator, sync-separator, sync-clipper and phase-splitter circuits. requires miniature 9-contact socket.

Mechanical Data

Source ........................................ RCA RC-27 - 1973
Bulb .......................................... T-6 1/2
Base Type ..................................... Small Button 9-Pin
EIA Outline ................................... 6-2
EIA Base ...................................... 9GM
Cathode ....................................... Coated Unipotential
Mounting Position ............................. Any

Electrical Data

Source ........................................ RCA RC-27 - 1973
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.45 A

Direct Interelectrode Capacitances (approx)

Pentode
Source ........................................ RCA RC-27 - 1973
Input ......................................... 7 pf
Output ........................................ 2.4 pf
Grid to Plate ................................. 0.025 pf

Triode
Source ........................................ RCA RC-27 - 1973
Input ......................................... 1.9 pf
Output ........................................ 1.6 pf
Grid to Plate ................................. 1.6 pf

Maximum Ratings (Design Center Values)

Pentode
Source ........................................ RCA RC-27 - 1973
Plate Voltage ................................. 330 V
Grid No. 2 Voltage ............................ 330 V
Plate Dissipation ............................. 2.3 W
Grid No. 2 Dissipation ........................ 0.55 W

Triode
Source ........................................ RCA RC-27 - 1973
Plate Voltage ................................. 330 V
Plate Dissipation ............................. 2.8 W

Characteristics and Typical Operation

Triode Class A Amplifier
Source ........................................ RCA RC-27 - 1973
Plate Voltage ................................. 125 V
Grid No. 1 Voltage ............................ -1 V
Amplification Factor .......................... 24
Plate Resistance (approx) ..................... 4100 Ω
Transconductance .............................. 5800 µMho
Plate Current ................................. 17 mA

Pentode Class A Amplifier
Source ........................................ RCA RC-27 - 1973
Plate Voltage ................................. 125 V
Grid No. 2 Voltage ............................ 125 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 56 Ω
Plate Resistance (approx) ..................... 170K Ω
Transconductance .............................. 7800 µMho
Plate Current ................................. 12 mA
Grid No. 2 Current ............................ 3.8 mA

A horizontal ribbon.

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A horizontal ribbon.

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Mon, 15 Aug 2022 18:19:55 -0700