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EF83

 
    
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The EF83 is a variable-mu AF voltage amplifying pentode.
The thin glass tube envelope is 20 mm in diameter and, excluding the B9A base pins, is 48 mm tall.
References: Data-sheet, 3002 & 1040. Type EF83 was first introduced in 1956. See also 1956 adverts.

 

Pin Connections
B9A
1
2
3
4
5
6
7
8
9
g2
s
k
h
h
a
s
g3
g1

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
6.3
0.2
250
50
-1.6
4.0
1.15
0.5M
1.6
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated July 04, 2018.
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