NJ7P SQL Tube Database Query

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6CM7
Medium-Mu Twin Triode

EIA Base & Outline

Application

Source ........................................ RCA RC-29 - 1975
Miniature type used as combined vertical-deflection oscillator and vertical-deflection amplifier in black-and-white television receivers.

Source ........................................ RCA RC-29 - 1975
Unit 1 is used as a conventional blocking oscillator in vertical-deflection circuits and unit 2 as a vertical-deflection amplifier. Requires miniature 9-contact socket.

Mechanical Data

Source ........................................ RCA RC-29 - 1975
Bulb .......................................... T-6 1/2
Base Type ..................................... Small Button 9-Pin
EIA Outline ................................... 6-3
EIA Base ...................................... 9ES
Cathode ....................................... Coated Unipotential
Mounting Position ............................. Any

Electrical Data

Source ........................................ RCA RC-29 - 1975
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.6 A

Direct Interelectrode Capacitances (approx)

Triode 1
Source ........................................ RCA RC-29 - 1975
Input ......................................... 2 pf
Output ........................................ 0.5 pf
Grid to Plate ................................. 3.8 pf

Triode 2
Source ........................................ RCA RC-29 - 1975
Input ......................................... 3.5 pf
Output ........................................ 0.4 pf
Grid to Plate ................................. 3 pf

Maximum Ratings (Design Center Values)

Triode 1
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 550 V
Plate Dissipation ............................. 1.45 W

Triode 2
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 550 V
Plate Dissipation ............................. 6 W

Characteristics and Typical Operation

Triode 1 Class A Amplifier
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 200 V
Grid No. 1 Voltage ............................ -7 V
Amplification Factor .......................... 20
Plate Resistance (approx) ..................... 11K Ω
Transconductance .............................. 2000 µ
Plate Current ................................. 5 mA

Triode 2 Class A Amplifier
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 250 V
Grid No. 1 Voltage ............................ -8 V
Amplification Factor .......................... 18
Plate Resistance (approx) ..................... 4.1K Ω
Transconductance .............................. 4400 µ
Plate Current ................................. 10 mA

Triode 2 Deflection Amplifier
Source ........................................ RCA RC-29 - 1975
DC Plate Supply Voltage ....................... 550 V
Peak Positive-Pulse Plate Voltage ............. 2200 V
Peak Negative-Pulse Plate Voltage ............. 220 V
Average Cathode Current ....................... 22 mA
Peak Cathode Current .......................... 77 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, 02 Feb 2023 23:12:24 -0700