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5A/102D

Sensibly equivalent to:
5A/166D 6P12 CV1724 POVT183
See also:
Production of Valve Heaters from Tungsten Wire
    
Extras ▼

 

The 5A/102D is an audio output pentode for telephone repeater amplifiers. The 5A/102D was the prototype for the CV1724 and both designations are printed on the glass. The old GPO code is POVT183.
See CV1724 for details.
The balloon envelope is 44 mm in diameter and, excluding the IO base pins, is 109 mm tall.
Reference: Data-sheet. Type 5A/102D was first introduced in 1946.

 

Pin Connections
IO
1
2
3
4
5
6
7
8
tc
-
h
a
g2
g3
-
h
k
g1

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
gm
7.5
0.85
180
150
2.5
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated March 24, 2021.
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