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CV1376

Sensibly equivalent to:
6BX6 EF80
See also:
The Construction of the EF80 - Valves for Bands III, IV & V
    
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The CV1376 is the UK Government procurement code for the EF80. It is an internally screened pentode and was a workhorse of the VHF TV receiver from when it was introduced in 1950.
The CV1376 (EF80) was much used for RF, intermediate frequency, and video amplification and was the successor to the EF91 and that replaced the EF50.
The circuit designer is given maximum flexibility by having all electrodes brought to external pins. Many pentodes have g3, the suppressor grid, internally connected to the cathode.
The thin glass tube envelope is 20 mm diameter and excluding the B9A base pins, is 57 mm tall.
References: Datasheet & 1040 Type CV1376 was first introduced in 1950.

 

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

 

Absolute Maximum Operating Conditions
Pentode
Va
Vs
Vg
mAa
mAs
ra
gm
170
170
-2
10
2.5
0.4M
7.4
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated October 09, 2013.
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