Power - Triode Single (under 10W) ·Triode
Directly heated Standard Valves 4104-series triode; variants differ chiefly in filament treatment and grid-to-anode insulation rather than documented application.
Directly heated triode. 4104-D, -E, -G valves have similar characteristics. 4104-E valve has a filament designed to reduce sputter noise. 4104-G valve is similar to 4104-E but has anode lead brought out through the stem to increase the grid—anode insulatio
Medium 4-contact bayonet base
General specifications
Properties common to every published source and operating point.
Electrical assignments shared by every tube using this base designation.
No verified pinout is recorded for this base designation.
1 physical section, each with unique specifications.
Section 1
Published ratings and characteristics promoted where directly established by the datasheet.
Source-dependent data
Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.
Data set 01
Published operating points and test conditions from this source.
Mutual conductance
1150 µS
Published characteristic; normalized from mA/V
Grid-anode capacity
59 pF
Published interelectrode capacitance
Anode-filament capacity
3.7 pF
Published interelectrode capacitance