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PL300

Sensibly equivalent to:
35FN5 CV10783
    
Extras ▼

 

The PL300 is a television line output valve designed for use within a 300 mA series heater chain. The EL300 is electrically identical with the exception of the 6.3 Volt 1.65 Amp heater designed for parallel heater operation.
The valve has a substantial box anode.
The screen grid has cooling fins above the top mica. The control grid is wound on copper support rods. The cathode tube is a flat rectangle. The low rectangular structure surrounding the inner grids is the beam forming plate.
The valve is essentially an all glass type formed on a glass disc with wires connected to the IO base pins rather than directly to pins as a B9D type would be.
The wide glass tube envelope is 38 mm in diameter, and excluding the IO base pins is 101 mm tall.
References: datasheet. Type PL300 was first introduced in 1968.

 

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
Beam Tetrode
Vh
Ah
Va
35.0
0.3
275
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated February 21, 2014.
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