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6AU6

Sensibly equivalent to:
6AU6A 6AU6WA 6AU6WB 6AU6WC 6J4P 6P2 CV2524 EF94
    
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This exhibit from Telefunken is labeled both 6AU6 and EF94, different designations for this RF pentode with use up to 50 MHz.
The EF94 designation.
The Telefunken logo. The Made in Germany is in English, suggesting a valve for export.
Manuacturers reference number.
The thin glass tube envelope is 18 mm in diameter and excluding the B7G base pins, is 46 mm tall.
References: Datasheet & 1040. Type 6AU6 was first introduced in 1946.

 

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
6.3
0.3
250
150
-6.5
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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