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6AQ5

Sensibly equivalent to:
BPM04 CV1862 EL90 N727
    
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The 6AQ5 ia a small audio output beam tetrode valve capable of 4.5 Watts in a single ended configuration.
The thin glass tube envelope is 18 mm in diameter and, excluding the B7G base pins, is 58 mm tall.
References: Data-sheet & 1040. Type 6AQ5 was first introduced in 1950. See also 1950 adverts.

 

Pin Connections
B7G
1
2
3
4
5
6
7
g1
k,bp
h
h
a
g2
g1

 

Absolute Maximum Operating Conditions
Beam Tetrode
Vh
Ah
Va
Vs
Vg
mAa
gm
Pout
6.3
0.45
250
250
-12.5
45
4.1
4.5W
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated January 27, 2013.
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