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EL84

Sensibly equivalent to:
6BQ5 6P15 CV2975 N709
See also:
Transformerless Amplifiers - A Small High Quality Amplifier - Current Limited 0-200V Supply
    
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The Mullard EL84 is the definitive expression of this design. This exhibit is a run-of-the-mill unbranded EL84.
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 EL84 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 February 23, 2014.
shape:thin.glass.tube construction:all.glass type:pentode age:1950.1960 base:b9a heater:6.3v pins:9 pin:1.ic pin:2.g1 pin:3.k.g3 pin:4.h pin:5.h pin:6.ic pin:7.a pin:8.ic pin:9.g2
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