NJ7P SQL Tube Database Query

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7AD7
Power Pentode

EIA Base & Outline

EIA Base: 8VEIA Bulb: 9-30

Mechanical Data

Bulb .......................................... T-9
Base Type ..................................... Lock-in 8-Pin
EIA Outline ................................... 9-30
EIA Base ...................................... 8V

Electrical Data

Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.6 A

Characteristics and Typical Operation

Class A Amplifier
Plate Voltage ................................. 300 V
Grid No. 2 Voltage ............................ 150 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 68 Ω
Plate Resistance (approx) ..................... 300K Ω
Transconductance .............................. 9500 µMho
Plate Current ................................. 28 mA
Grid No. 2 Current ............................ 7.0 mA

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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.

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Frank's Electron Tube Pages

Complete Tube Manuals:
Tube Manual Index from NJ7P

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Mon, 05 Dec 2022 00:22:27 -0700