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12AX7

Sensibly equivalent to:
12DT7 6057 6L13 B339 CV492 E2162 ECC83
See also:
Fender 12AX7 Box - Transformerless Amplifiers
    
Extras ▼

 

The 12AX7 high impedance amplifier triode was designed specifically for audio use and is an original American design. This exhibit is of late manufacture and was made in Russia for the Fender company and has the Fender logo in gold on the side. It looks like standard production with additional lettering.
The Fender Logo.
The anode is a larger box than the original Mullard valves.
The lower mica and grid visible within the anode box.
One of the carbonised anode boxes and the bright inter valve screen beyond.
The thin glass tube envelope is 22 mm in diameter and, excluding the B9A base pins, is 47 mm tall.
References: Datasheet & 1045. Type 12AX7 was first introduced in 1947.

 

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
6.3
0.3
250
-2
1.2
62.5K
1.6
PDF scanned from an original document held by the museum
Updated June 12, 2013.
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