NJ7P SQL Tube Database Query

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6C9
Sharp-Cutoff Dual Tetrode

EIA Base & Outline

Application

Source ........................................ Sylvania
Miniature type used as vhf rf amplifiers and vhf autodyne mixers. This tube uses a small button miniature 9-pin base with the addition of a center pin. Requires miniature 10-contact socket.

Mechanical Data

Source ........................................ Sylvania
Bulb .......................................... T-6 1/2
EIA Outline ................................... 6-13
EIA Base ...................................... 10F

Electrical Data

Source ........................................ Sylvania
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.4 A

Direct Interelectrode Capacitances (approx)

Tetrode 1
Source ........................................ Sylvania
Input ......................................... 4.4 pf
Output ........................................ 2.2 pf
Grid to Plate ................................. 0.055 pf

Tetrode 2
Source ........................................ Sylvania
Input ......................................... 4.2 pf
Output ........................................ 2.2 pf
Grid to Plate ................................. 0.05 pf

Maximum Ratings (Design Center Values)

Tetrode 1
Source ........................................ Sylvania
Plate Voltage ................................. 250 V
Grid No. 2 Voltage ............................ 180 V
Plate Dissipation ............................. 1.5 W
Grid No. 2 Dissipation ........................ 0.5 W

Tetrode 2
Source ........................................ Sylvania
Plate Voltage ................................. 250 V
Grid No. 2 Voltage ............................ 180 V
Plate Dissipation ............................. 2.5 W
Grid No. 2 Dissipation ........................ 0.5 W

Characteristics and Typical Operation

Class A Amplifier
Source ........................................ Sylvania
Plate Voltage ................................. 125 V
Grid No. 2 Voltage ............................ 80 V
Grid No. 1 Voltage ............................ -1 V
Plate Resistance (approx) ..................... 100K Ω
Transconductance .............................. 8000 µ
Plate Current ................................. 10 mA
Grid No. 2 Current ............................ 1.5 mA

If you are uncertain about the EIA designator for a particular tube please use the "Index" button to list all the tubes in the database. You can click on the designator for the closest tube.

(c) 1994-2021 by William A. Beech, NJ7P

Thu, 30 Jun 2022 07:29:34 -0700