NJ7P SQL Tube Database Query

A horizontal ribbon.

Note: Please do not link down into my pages. I change this directory structure often and your links will not work correctly.

A horizontal ribbon.

6L7
Pentagrid Mixer Amplifier

EIA Base & Outline

EIA Base: 7TEIA Bulb: 8-4

Substitute Data

Preferred Substitutes ......................... 1612
Source ........................................ RCA RC-13 1937

Application

Source ........................................ RCA RC-13 1937
Metal type used as mixers to superhetrodyne circuits having a separate oscillator stage as well as in other applications where dual control is desirablein a single stage.

Source ........................................ RCA RC-13 1937
The two separate control grids are shielded from each other and the coupling effects between oscillator and signal circuits are very small. Requires octal socket.

Mechanical Data

Source ........................................ RCA RC-13 1937
Bulb .......................................... MT-8
Base Type ..................................... Small Wafer Octal 7-Pin
EIA Outline ................................... 8-4
EIA Base ...................................... 7T
Top Cap ....................................... Miniature
Mounting Position ............................. Any

Electrical Data

Source ........................................ RCA RC-13 1937
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.3 A

Direct Interelectrode Capacitances (approx)

Pentagrid
Source ........................................ RCA RC-13 1937
Grid No. 3 to Plate ........................... 0.025 pf
Grid No. 3 to Grid No. 1 ...................... 0.12 pf
Grid No. 1 to Plate ........................... 0.0005 pf
Grid No. 3 to All (RF Input) .................. 11.5 pf
Grid No. 1 to ALL (Osc Input) ................. 8.5 pf
Plate to All (Mixer Output) ................... 12.5 pf
Grid No. 1 to All Except Cathode .............. pf

Maximum Ratings (Design Center Values)

Pentagrid
Source ........................................ RCA RC-13 1937
Plate Voltage ................................. 300 V
Grid No. 2 & 4 Voltage (Screen) ............... 150 V
Plate Dissipation ............................. 1.5 W
Grid No. 2 & 4 Dissipation (Screen) ........... 1.0 W

Characteristics and Typical Operation

Class A Amplifier
Source ........................................ RCA RC-13 1937
Plate Voltage ................................. 250 V
Grid No. 2 & 4 Voltage (Screen) ............... 100 V
Grid No. 1 Bias Voltage ....................... -3 V
Grid No. 3 Bias Voltage ....................... -3 V
Plate Resistance (approx) ..................... 600K Ω
Conversion Transconductance ................... 1100 µMho
Plate Current ................................. 5.3 mA
Grid No. 2 & 4 Current (Screen) ............... 6.5 mA

Mixer
Source ........................................ RCA RC-13 1937
Plate Voltage ................................. 250 V
Grid No. 2 & 4 Voltage (Screen) ............... 100 V
Grid No. 1 Voltage (RMS) ...................... 12 V
Grid No. 1 Bias Voltage ....................... -3 V
Grid No. 3 Bias Voltage ....................... -10 V
Plate Resistance (approx) ..................... 1M Ω
Conversion Transconductance ................... 350 µMho
Plate Current ................................. 2.4 mA
Grid No. 2 & 4 Current (Screen) ............... 7.1 mA

Mixer
Source ........................................ RCA RC-13 1937
Plate Voltage ................................. 250 V
Grid No. 2 & 4 Voltage (Screen) ............... 150 V
Grid No. 1 Voltage (RMS) ...................... 18 V
Grid No. 1 Bias Voltage ....................... -6 V
Grid No. 3 Bias Voltage ....................... -15 V
Plate Resistance (approx) ..................... 1M Ω
Conversion Transconductance ................... 350 µMho
Plate Current ................................. 3.3 mA
Grid No. 2 & 4 Current (Screen) ............... 9.2 mA

A horizontal ribbon.

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.

Please enter the tube number:

This database contains data on thousands of tubes. Every effort has been made to insure the accuracy of this reference, however, I assume no liability for the results of using information contained herein.

Other Tube Search Engines:
Frank's Electron Tube Pages

Complete Tube Manuals:
Tube Manual Index from NJ7P

A horizontal ribbon.

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

Fri, 19 Aug 2022 08:08:54 -0700