NJ7P SQL Tube Database Query

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3FW7
Medium-Mu Twin Triode

EIA Base & Outline

EIA Base: 8LM

Substitute Data

Substitutes ................................... 3FX7

Mechanical Data

Bulb .......................................... Special
Base Type ..................................... Metal Subminiature
Maximum Overall Height ........................ 1.969 In.
Maximum Diameter .............................. 0.512 In.
EIA Base ...................................... 8LM

Electrical Data

Heater Voltage ................................ 3.5 V
Heater Current ................................ 0.6 A

For other characteristics and typical operation, see 6FW7

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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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Complete Tube Manuals:
Tube Manual Index from NJ7P

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Tue, 31 Jan 2023 09:37:24 -0700