NJ7P SQL Tube Database Query

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6AR7GT
Dual Diode - Remote-Cutoff Pentode

EIA Base & Outline

Mechanical Data

Source ........................................ UI DS
Bulb .......................................... T9
Base Type ..................................... Intermediate Shell Octal 8-Pin
EIA Base ...................................... 7DE
Top Cap ....................................... Skirted Miniature
Cathode ....................................... Coated Unipotential
Mounting Position ............................. Any

Electrical Data

Source ........................................ UI DS
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.3 A
Maximum Heater-Cathode Voltage ................ 90 V

Direct Interelectrode Capacitances (approx)

Pentode
Source ........................................ UI DS
Input ......................................... 5.0 pf
Output ........................................ 9.0 pf
Grid to Plate ................................. 0.003 pf

Maximum Ratings (Design Center Values)

Pentode
Source ........................................ UI DS
Plate Voltage ................................. 300 V
Grid No. 2 Supply Voltage ..................... 125 V
Grid No. 2 Voltage ............................ 300 V
Positive Grid No. 1 Voltage ................... 0 V
Plate Dissipation ............................. 2.25 W
Grid No. 2 Dissipation ........................ 0.35 W
Plate Current ................................. mA
Grid Current .................................. mA
Cathode Current ............................... mA
Grid No. 1 Circuit Resistance
Fixed Bias ................................. Ω
Self Bias .................................. Ω
Bulb Temperature (At Hottest Point) ........... °C

Characteristics and Typical Operation

Class A Amplifier
Source ........................................ UI DS
Plate Voltage ................................. 250 V
Grid No. 2 Voltage ............................ 100 V
Grid No. 1 Voltage ............................ -2 V
Plate Resistance (approx) ..................... 1M Ω
Transconductance .............................. 2500 µ
Plate Current ................................. 7 mA
Grid No. 2 Current ............................ 1.8 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

Sun, 26 Jun 2022 04:55:20 -0700