NJ7P SQL Tube Database Query

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6SK7
Remote-Cutoff Pentode

EIA Base & Outline

Substitute Data

Substitutes ................................... 6AB7 6AC7 6AJ7
Source ........................................ RCA RC-15 - 1947

Application

Source ........................................ RCA RC-15 - 1947
Metal type used as rf or if amplifier in radio receivers. It features single-ended construction and interlead shields. Because of the remote-cutoff characteristic,

Source ........................................ RCA RC-15 - 1947
this type is able to handle large signal voltages without crossmodulation or modulation-distortion and are often used in receivers with avc. Requires octal socket and may be mounted in any position.

Mechanical Data

Source ........................................ RCA RC-15 - 1947
Bulb .......................................... MT-8
EIA Outline ................................... 8-1
EIA Base ...................................... 8N

Electrical Data

Source ........................................ RCA RC-15 - 1947
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.3 A
Maximum Heater-Cathode Voltage
Heater Positive with Respect to Cathode
DC Component ............................ 90 V
Heater Negative with Respect to Cathode
DC Component ............................ 90 V

Direct Interelectrode Capacitances (approx)

Pentode
Source ........................................ RCA RC-15 - 1947
Input ......................................... 6 pf
Output ........................................ 7 pf
Grid to Plate ................................. 0.003 pf

Maximum Ratings (Design Center Values)

Pentode
Source ........................................ RCA RC-15 - 1947
Plate Voltage ................................. 300 V
Grid No. 2 Supply Voltage ..................... 300 V
Grid No. 2 Voltage ............................ 125 V
Positive Grid No. 1 Voltage ................... 0 V
Plate Dissipation ............................. 4.0 W
Grid No. 2 Dissipation ........................ 0.4 W

Characteristics and Typical Operation

Class A Amplifier
Source ........................................ RCA RC-15 - 1947
Plate Voltage ................................. 250 V
Grid No. 2 Voltage ............................ 100 V
Grid No. 1 Voltage ............................ -3 V
Plate Resistance (approx) ..................... 800K Ω
Transconductance .............................. 2000 µ
Plate Current ................................. 9.2 mA
Grid No. 2 Current ............................ 2.6 mA

Class A Amplifier
Source ........................................ RCA RC-15 - 1947
Plate Voltage ................................. 100 V
Grid No. 2 Voltage ............................ 100 V
Grid No. 1 Voltage ............................ -1 V
Plate Resistance (approx) ..................... 120K Ω
Transconductance .............................. 2350 µ
Plate Current ................................. 13 mA
Grid No. 2 Current ............................ 4 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

Wed, 08 Feb 2023 23:46:06 -0700