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ECC85

Sensibly equivalent to:
6AQ8 6L12 B719
See also:
Valves and their Habits - Television Reception on Band V
    
Extras ▼

 

This exhibit is an ECC85 with an un-recognised logo and no other indication as to the manufacturer.
The ECC85 design was specifically aimed at VHF FM receiver front ends.
The twin triode sections with central electrostatic screen.
One anode face view and the number 208045 and code VJ39.
The thin glass tube envelope is 22 mm in diameter and, excluding the B9A base pins, is 47 mm tall.
References: Datasheet & 1040. Type ECC85 was first introduced in 1954.

 

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

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
Vg
mAa
ra
gm
6.3
0.435
250
-2.3
10
9700
5.9
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated February 12, 2016.
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