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6BQ5

Sensibly equivalent to:
6P15 CV2975 EL84 N709
See also:
A Small High Quality Amplifier
    
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The 6BQ5 is another designation for the Mullard designed output pentode EL84.
The envelope is discoloured - a sign of a hard life.
A μ-tracer plot for this exhibit. This shows a good shape to the curves, in many cases a plot of a used EL84 type of valve will be far from the correct shape.
The thin glass tube envelope is 20 mm in diameter, and excluding the B9A base pins is 70 mm tall.
References: Datasheet, 3002 & 1040. Type 6BQ5 was first introduced in 1953.

 

Pin Connections
B9A
1
2
3
4
5
6
7
8
9
ic
g1
k,g3
h
h
ic
a
ic
g2

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
gm
Pout
Pdiss
6.3
0.76
250
250
-7.3
48
5.5
6.7
2.2
12W
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated October 28, 2015.
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