NJ7P Tube Database Search

6JC5
Beam Power Pentode

Base & Bulb ( GE - 1973)

EIA Base 12EV  EIA Bulb 12-57

Mechanical Data

Bulb .......................................... T-12
Outline ....................................... 12-57
EIA Base ...................................... 12EV

Electrical Data

Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.8 A

Direct Interelectrode Capacitances (approx)

Pentode
Input ......................................... 9.5 pf
Output ........................................ 7.0 pf
Grid to Plate ................................. 0.54 pf

Maximum Ratings (Design Center Values)

Pentode
Plate Voltage ................................. 350 V
Grid No. 2 Voltage ............................ 300 V
Plate Dissipation ............................. 19 W
Grid No. 2 Dissipation ........................ 2.75 W

Characteristics and Typical Operation

Class A Amplifier
Plate Voltage ................................. 250 V
Grid No. 2 Voltage ............................ 250 V
Grid No. 1 Voltage ............................ -20 V
Plate Resistance (approx) ..................... 50000 Ω
Transconductance .............................. 4100 µMho
Plate Current ................................. 43 mA
Grid No. 2 Current ............................ 3.5 mA
Grid No. 1 Voltage for Ib ..................... 100 µa @ -50 V

Characteristics and Typical Operation

Vert Defl Amplifier
DC Plate Supply Voltage ....................... 250 V
Peak Positive-Pulse Plate Voltage ............. 2500 V
DC Grid No. 2 Voltage ......................... 250 V
Average Cathode Current ....................... 75 mA
Peak Cathode Current .......................... 260 mA
Plate Dissipation ............................. 19 W
Grid No. 2 Dissipation ........................ 2.75 W

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