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PCF808

Sensibly equivalent to:
30FL14
    
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The PCF808 triode pentode offers high voltage gain in a screened design. It was probably designed for VHF television use.
The Mazda 30FL14 is a direct equivalent.
The triode is on the right. The perforated metal on the left is a screen round the pentode.
The anode is quite small within the screen as considerable detail can be seen through the holes.
The connection to the screen grid is made above the top mica and the connecting rod passes inside the screen to the base in.
The thin glass tube envelope is 20 mm in diameter and, excluding the B9A base pins, is 48 mm tall.
Reference: 1040.

 

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

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
7.4
0.3
160
160
-1.7
12
4
0.4M
14.5
Updated January 12, 2015.
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