▼ Menu

PCF82

Sensibly equivalent to:
9EA8 9U8 9U8A
See also:
Valves and their Habits - Valves for Bands III, IV & V - PCF82/9U8
    
Extras ▼

 

The PCF82 is a television frequency changer from the VHF television era. Each section has its own cathode brought out to a pin. The pentode voltage rating is higher than the PCF80. This exhibit is a generic product without a maker being indicated.
The anode is single sided and this is why the beam plate and grid ends can be seen.
The triode on the left is separated from the pentode by an electrostatic screen.
Face view of the small triode. The anode has been formed from a single sheet folded and stitched together to leave a rectangular opening.
The thin glass tube envelope is 21 mm in diameter and, excluding the B9A base pins, is 49 mm tall.
References: Datasheet & 1040. Type PCF82 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,g3,s
k(t)
g1(t)

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
mAa
mAs
ra
gm
9.5
0.3
250
110
10.0
3.5
0.4M
5.2

 

Absolute Maximum Operating Conditions
Triode
Va
mAa
150
8.5
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated December20, 2017.
shape:thin.glass.tube construction:all.glass type:triode.pentode age:1950.1960 base:b9a heater:300ma pins:9 pin:1.a(t) pin:2.g1 pin:3.g2 pin:4.h pin:5.h pin:6.a pin:7.k.g3.s pin:8.k(t) pin:9.g1(t)
Return to Main Index