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42E

 
    
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The 42E is an audio output pentode, with a low output rating. It is in fact a Type 6F6G on a UX6 base.
When used in push pull a pair would deliver 18.5 Watts in class AB2.
The classic envelope is 42 mm in diameter and, excluding the UX6 base pins, is 99 mm tall.
References: Datasheet, 3002, 1040 & 1043. Type 42E was first introduced in 1934.

 

Pin Connections
UX6
1
2
3
4
5
6
h
a
g2
g1
k
h

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
Pout
6.3
0.7
250
250
-16.5
34
6.5
80k
2.5
3.2W
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated February 01, 2013.
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