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CV8297

Sensibly equivalent to:
6GW8 ECL86
See also:
A Low Cost Amplifier - 10W Stereo Amplifier - A Economical Stereo Amplifier - Useful Push-Pull Amplifier - Audio Triode Pentode ECL86
    
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The ECL86 was one of the last triode plus output pentode valves designed and was released to the market in 1962 here we have the UK Government procurement identification.
The triode on the right has additional screening around the top of the control grid supports. Screening for the triode can also be seen below the lower mica.
The screen continues between the sections and above the top mica.
The thin glass tube envelope is 20 mm in diameter and, excluding the B9A base pins, is 68 mm tall.
References: Data-sheet & 1040. Type CV8297 was first introduced in 1961.

 

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

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
Vg
mAa
ra
gm
6.3
0.7
250
-1.9
1.2
62k
1.6

 

Absolute Maximum Operating Conditions
Pentode
Va
Vs
Vg
mAa
mAs
ra
gm
Pout
D
250
250
-7
36
6
48k
10
4W
10%
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated July 21, 2021.
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