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CV5215

Sensibly equivalent to:
6BL8 6C16 ECF80
See also:
Valves for Bands III, IV & V
    
Extras ▼

 

The CV5215 is a UK government code for the ECF80.
The triode is the oscillator and has to produce 5 V pk-pk signal. The screened pentode is the mixer. The valve has two cathode connections so that the two valves can be used separately if required.
The triode on the left is located at right angles to the pentode on the right.
The thin glass tube envelope is 20 mm in diameter and, excluding the B9A base pins, is 47 mm tall.
References: Data-sheet & 1040 Type CV5215 was first introduced in 1954. See also 1954 adverts.

 

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

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
6.3
0.43
250
180
-5.8
5.7
1.4
1.5M
5.5

 

Absolute Maximum Operating Conditions
Triode
Va
Vg
mAa
ra
gm
100
-2
14
4K
5
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated March 08, 2020.
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