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HL4

Sensibly equivalent to:
CV1173
    
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The golden screened HL4 triode was designed for general purpose and audio amplifier applications. It is of medium impedance and could have been employed as the first audio stage after the detector in radio receivers.
The classic envelope is 37 mm in diameter and, excluding the B5 base pins, is 87 mm tall.
Reference: 1043. Type HL4 was first introduced in 1935.

 

Pin Connections
B5
1
2
3
4
5
a
g1
h
h
k

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
Vg
mAa
ra
gm
4.0
1.0
200
-3.0
4.0
11.5k
3.5
Updated January 08, 2013.
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