NJ7P SQL Tube Database Query

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404A
Sharp-Cutoff Pentode

EIA Base & Outline

EIA Base: 9X

Mechanical Data

EIA Base ...................................... 9X

Electrical Data

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

Characteristics and Typical Operation

Class A Amplifier
Plate Voltage ................................. 160 V
Grid No. 2 Voltage ............................ 160 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 600 Ω
Transconductance .............................. 12500 µMho
Plate Current ................................. 13 mA
Grid No. 2 Current ............................ 4.5 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.

Other Tube Search Engines:
Frank's Electron Tube Pages

Complete Tube Manuals:
Tube Manual Index from NJ7P

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Mon, 29 Nov 2021 04:36:31 -0700