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PCC89

Sensibly equivalent to:
4021 7FC7
See also:
Valves and their Habits - The PC97 - a tutorial - Frame-grid valves for TV No. 1 - Frame-grid valves for TV No. 3 - Frame-grid valves for TV No. 5 - Frame-grid valves for TV No. 6 - Frame-grid valves for TV No. 7
    
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The PCC89 is a high gain, Band III VHF, frame grid double triode for domestic television receivers.
When compared to our other PCC89 small changes in design can be seen, suggesting at least two production lines were used possibly in separate factories.
The thin glass tube envelope is 20 mm in diameter, and excluding the B9A base pins, is 48 mm tall.
References: Datasheet & 1040. Type PCC89 was first introduced in 1959.

 

Pin Connections
B9A
1
2
3
4
5
6
7
8
9
k(2)
g1(2),s(2)
a(2)
h
h
g(1)
k(1)in
k(1)out
a(1)

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
Vg
mAa
ra
gm
7.5
0.3
90
-1.2
15
2900
12.3
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated December05, 2016.
shape:thin.glass.tube construction:all.glass type:double.triode age:1950.1960 base:b9a heater:300ma pins:9 pin:1.k(2) pin:2.g1(2).s(2) pin:3.a(2) pin:4.h pin:5.h pin:6.g(1) pin:7.k(1)in pin:8.k(1)out pin:9.a(1)
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