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12AU6

Sensibly equivalent to:
CV1961 HF94
    
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The 12AU6 is an American design. Usage is RF or AF voltage amplification. The design is a sharp cut-off pentode with a high gm of 5.2 mA/V and low anode to control grid capacitance.
Through the holes in the anode the three wire grids can be observed. The suppressor grid has a very wide pitch.
The thin glass tube envelope is 17 mm in diameter, and excluding the B7G base pins is 48 mm tall.
References: Datasheet & 1040. Type 12AU6 was first introduced in 1947.

 

Pin Connections
B7G
1
2
3
4
5
6
7
g1
g3,s
h
h
a
g2
k

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
12.6
0.15
250
150
-1
10.6
4.3
1.0M
5.2
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated January 02, 2015.
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