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6AQ5

Sensibly equivalent to:
BPM04 CV1862 EL90 N727
    
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The 6AQ5 is a small audio output beam tetrode valve capable of 4.5 Watts when operated in a single ended configuration. We have several examples of this popular device including this one from Japan.
The thin glass tube envelope is 18 mm in diameter and, excluding the B7G base pins, is 58 mm tall.
References: Datasheet & 1040. Type 6AQ5 was first introduced in 1950.

 

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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