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6FN5

Sensibly equivalent to:
EL300
    
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The 6FN5 is a television line output valve or sweep tube.
The anode side view.
Looking at the anode working face where a box projection exists both side making the anode look like an X.
The anode connection to the top cap and the radiating fin on the screen grid.
The control grid also has a cooling fin and unlike the screen grid is wound on copper rods. The glass shows both the 6FN5 and the EL300 designations.
The control grid support and cooling fin.
The wide glass tube envelope is 38 mm in diameter, and excluding the IO base pins is 100 mm tall.
Reference: Datasheet.

 

Pin Connections
IO
1
2
3
4
5
6
7
8
tc
g2
h
k,g3
g1
g1
k,g3
h
g2
a

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
6.3
1.65
550
275
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated March 27, 2014.
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