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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 from the era of VHF television in the 1950s and early 1960s. This valve is a triode pentode, with separate cathode connections. The PCF80 was designed to function as a mixer and oscillator in the tuner at between 50 and 190 MHz.
Seen from the side the relative sizes of the two electrode structures become clear. The triode, on the right, is much smaller than the pentode section.
See also PCC84 for the corresponding pre-amplifier valve for Band III television tuners from the mid 1950s.
The thin glass tube envelope is 20 mm in diameter and, excluding the B9A base pins, is 47 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 February 28, 2013.
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