NJ7P SQL Tube Database Query

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6EM7
Twin Triode

EIA Base & Outline

Substitute Data

Substitutes ................................... 6DN7 6EA7 6GL7
Source ........................................ RCA RC-29 - 1975

Application

Source ........................................ RCA RC-29 - 1975
Glass octal type used as combined vertical-deflection amplifier and vertical-deflection oscillator in color and black-and-white television receivers. Requires octal socket. For curve of average plate characteristics, unit 1, refer to 6DR7 (unit 1).

Mechanical Data

Source ........................................ RCA RC-29 - 1975
Bulb .......................................... T-9
Base Type ..................................... Short Intermediate Shell Octal 8-Pin
EIA Outline ................................... 9-38
EIA Base ...................................... 8BD
Cathode ....................................... Coated Unipotential
Mounting Position ............................. Any

Electrical Data

Source ........................................ RCA RC-29 - 1975
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.925 A

Direct Interelectrode Capacitances (approx)

Triode 1
Source ........................................ RCA RC-29 - 1975
Input ......................................... 2.2 pf
Output ........................................ 0.6 pf
Grid to Plate ................................. 4.8 pf

Triode 2
Source ........................................ RCA RC-29 - 1975
Input ......................................... 7 pf
Output ........................................ 1.8 pf
Grid to Plate ................................. 10 pf

Maximum Ratings (Design Center Values)

Triode 1
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 330 V
Plate Dissipation ............................. 1.5 W

Triode 2
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 330 V
Plate Dissipation ............................. 10 W

Characteristics and Typical Operation

Triode 1 Class A Amplifier
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 250 V
Grid No. 1 Voltage ............................ -3 V
Amplification Factor .......................... 64
Plate Resistance (approx) ..................... 40K Ω
Transconductance .............................. 1600 µ
Plate Current ................................. 1.4 mA

Triode 2 Class A Amplifier
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 150 V
Grid No. 1 Voltage ............................ -20 V
Amplification Factor .......................... 5.4
Plate Resistance (approx) ..................... 750 Ω
Transconductance .............................. 7200 µ
Plate Current ................................. 50 mA

Tri 2 Vert Amplifier
Source ........................................ RCA RC-29 - 1975
DC Plate Supply Voltage ....................... 550 V
Peak Positive-Pulse Plate Voltage ............. 1500 V
DC Grid No. 2 Voltage ......................... -250 V
Peak Negative-Pulse Grid No. 1 Voltage ........ 50 V
Average Cathode Current ....................... 175 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

Sat, 25 Mar 2023 19:46:12 -0700