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PCF80

Sensibly equivalent to:
30C1 8A8 9A8 LZ319 LZ329
See also:
Valves and their Habits
    
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The PCF80 is the definitive triode pentode mixer/oscillator from the dawn of Band III television in the mid 1950's. Originally Band I television operated around 45-50 MHz but with Band III the working frequency moved to 174 - 240 MHz and new valve techniques were demanded.
The glass is also marked with the designation 9A8.
The pentode on the left has a cooling fin on the control grid supports.
The triode seen face on, it also has copper support rods for the grid.
The thin glass tube envelope is 20 mm in diameter and, excluding the B9A base pins, is 49 mm tall.
References: Datasheet & 1040. Type PCF80 was first introduced in 1953.

 

Pin Connections
B9A
1
2
3
4
5
6
7
8
9
a(t)
g1
g2
h
h
a
k,s,g3
k(t)
g1(t)

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
9
0.3
170
170
-5.5
5.2
1.5
0.87M
2.1

 

Absolute Maximum Operating Conditions
Triode
Va
Vg
mAa
100
-2
14
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated April 01, 2014.
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