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ID = 4780
United States of America (USA)
Brand: Common type USA tube/semicond.
Tube type:  Triode, vacuum   Audio Frequency 
Identical to 6DR4
Similar Tubes
Multiple differences or of other kind:
  12AX7 ; ECC83

Base Miniatur-7-Pin-Base B7G, USA 1940
Was used by Radio/TV-reception etc.
Filament Vf 6.3 Volts / If 0.15 Ampere / Indirect / Specified voltage AND current AC/DC

Miniature high-mu (100) triode intended for use in voltage amplifier, phase inverter and high voltage gain applications.

The 6DR4 is electrically equivalent to one section of the 12AX7 (source Tung-Sol datasheet).

Dimensions (WHD)
incl. pins / tip
x 54 x 19 mm / x 2.13 x 0.75 inch
Tube prices 3 Tube prices (visible for members only)
Information source Essential Characteristics, GE 1973   
-- Original-techn. papers.   Tung-Sol Technical Data

6dr4_sockel.png 6DR4: Essential characteristics
Peter Hoddow

Just Qvigstad
6DR4: Herstellerdatenblatt
Stefan Müller

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