NJ7P SQL Tube Database Query

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A horizontal ribbon.

6FS5
Frame-Grid Pentode

EIA Base & Outline

EIA Base: 7GAEIA Bulb: 5-2

Substitute Data

Preferred Substitutes ......................... 6GU5
Substitutes ................................... 6FG5
Source ........................................ RCA RC-29 - 1975

Application

Source ........................................ RCA RC-29 - 1975
Miniature type used as rf-amplifier tube in vhf television receivers. In this tube, grid 1 is the control grid, grid 2 is a focusing grid, grid 3 is the screen grid and

Source ........................................ RCA RC-29 - 1975
grid 4 is the suppressor grid. Grid 2 and grid 4 are internally connected to the cathode aligned with grid 3. Requires miniature 7-contact socket.

Mechanical Data

Source ........................................ RCA RC-29 - 1975
Bulb .......................................... T-5 1/2
EIA Outline ................................... 5-2
EIA Base ...................................... 7GA

Electrical Data

Source ........................................ RCA RC-29 - 1975
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.2 A

Direct Interelectrode Capacitances (approx)

Hexode
Source ........................................ RCA RC-29 - 1975
Input ......................................... 4.8 pf
Output ........................................ 2.8 pf
Grid to Plate ................................. 0.016 pf

Maximum Ratings (Design Center Values)

Hexode
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 300 V
Grid No. 2 Voltage ............................ 150 V
Plate Dissipation ............................. 3.25 W
Grid No. 2 Dissipation ........................ 0.15 W

Characteristics and Typical Operation

VHF Class A Amplifier
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 275 V
Grid No. 2 Voltage ............................ 135 V
Grid No. 1 Voltage ............................ -0.2 V
Plate Resistance (approx) ..................... 240K Ω
Transconductance .............................. 10K µMho
Plate Current ................................. 9 mA
Grid No. 2 Current ............................ 0.17 mA

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Thu, 20 Jan 2022 16:35:04 -0700