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CV455

Sensibly equivalent to:
12AT7WA 12AT7 B309 CV4024 CV5212 E2157 ECC81
See also:
Pin Compatible Double Triodes
    
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The CV455 is a VHF double triode, useful for RF stages, oscillators and frequency multipliers. The commercial type designation is ECC81. The American 12AT7 was the prototype.
The two small triodes have space between them but no electrostatic screen.
Each anode is folded and stitched such that a side wing is formed that both holds the anode between the mica sheets and adds extra surface area for heat loss.
The thin glass tube envelope is 21 mm in diameter and, excluding the B9A base pins, is 48 mm tall.
References: Datasheet & 1040.

 

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

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
Vg
mAa
ra
gm
6.3
0.3
170
-1
8.5
11k
5.9
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated January 10, 2016.
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