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UCL83

 
    
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The UCL83 is an AF amplifier triode and an output pentode combined in a single envelope. The use would have been for post detector amplification and loudspeaker driving in broadcast receivers and small VHF televisions sets. The 100 mA heater is for use on heater chains in universal AC or DC mains equipment.
The pentode is on the left and the triode is on the right. Through the hole in the side of the anode the three wire grids of the pentode can be seen.
The thin glass tube envelope is 20 mm in diameter and, excluding the B9A base pins, is 49 mm tall.
References: Datasheet & 1040. Type UCL83 was first introduced in 1955.

 

Pin Connections
B9A
1
2
3
4
5
6
7
8
9
a(t)
g1(t)
k(t)
h
h
a
k,g3
g2
g1

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
gm
μ
38
0.1
170
170
-9.5
30
5.5
10

 

Absolute Maximum Operating Conditions
Triode
Va
Vg
mAa
gm
μ
170
-1.5
1.6
2.1
82
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated February 23, 2013.
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