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HL23

Sensibly equivalent to:
3A/205D CV1130 CV1586 CV2994 VR130
See also:
CV1130 short entry
    
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The HL23 is a low power low impedance low gain, battery triode. The external metalising suggests a role in RF/IF amplification, but the literature is not specific.
The classic envelope is 30 mm in diameter and, excluding the MO base pins, is 67 mm tall.
References: Datasheet, 1040 & 1043. Type HL23 was first introduced in 1938.

 

Pin Connections
MO
1
2
3
4
5
6
7
8
f
-
a
-
g1
m
-
f

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
Vg
mAa
ra
gm
2.0
0.05
150
-2.4
1.5
27,000
1.2
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated April 04, 2015.
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