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ECC801S

 
    
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The ECC801S is a special quality VHF double triode. The heater is centre tapped for use on 6.3 Volts supplies or 12.6 Volts - vehicle batteries.
The twin triode section are separated but do not have a screen between them.
The stitched anode with the copper control grid supports visible.
The thin glass tube envelope is 20 mm in diameter and, excluding the B9A base pins, is 47 mm tall.
Reference: Data-sheet. Type ECC801S was first introduced in 1965. See also 1965 adverts.

 

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)
hct

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
Vg
mAa
ra
gm
μ
6.3
0.3
250
-12
10.0
11,000
5.5
60
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated March 24, 2023.
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