NJ7P SQL Tube Database Query

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6CH7
Medium-Mu Twin Triode

EIA Base & Outline

EIA Base: 9FCEIA Bulb: 6-2

Substitute Data

Preferred Substitutes ......................... 6CX7
Substitutes ................................... 6BC8 6BQ7 6BS8 6BZ7
Source ........................................ GE - 1973

Application

Source ........................................ GE - 1973
Miniature type used as a cascode amplifier in vhf color and black-and-white television tuners and in push-pull cathode-drive rf amplifiers. Requires miniature 9-contact socket.

Mechanical Data

Source ........................................ GE - 1973
Bulb .......................................... T-6 1/2
EIA Outline ................................... 6-2
EIA Base ...................................... 9FC

Electrical Data

Source ........................................ GE - 1973
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.4 A

Direct Interelectrode Capacitances (approx)

Each Triode
Source ........................................ GE - 1973
Input ......................................... 2.4 pf
Output ........................................ 0.8 pf
Grid to Plate ................................. 1.1 pf

Maximum Ratings (Design Center Values)

Each Triode
Source ........................................ GE - 1973
Plate Voltage ................................. 250 V
Plate Dissipation ............................. 2.0 W

Characteristics and Typical Operation

Class A Amplifier
Source ........................................ GE - 1973
Plate Voltage ................................. 150 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 220 Ω
Amplification Factor .......................... 36
Plate Resistance (approx) ..................... 5300 Ω
Transconductance .............................. 6800 µMho
Plate Current ................................. 10 mA

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Mon, 15 Aug 2022 23:51:52 -0700