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H42

Sensibly equivalent to:
CV1180 NR60
See also:
BVA Influence - Osram Advert, October 1936 - CV1182 short entry
    
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The H42 is a triode designed for service as detection and first AF amplifier in superhet receivers. This style became the normal configuration.
The paper label is for the M-OV brand name of Marconiphone. The electrode assembly is obscured.
The classic envelope is 41 mm in diameter and, excluding the B7 base pins, is 101 mm tall.
References: Datasheet, 1040 & 1043. Type H42 was first introduced in 1936.

 

Pin Connections
B7
1
2
3
4
5
6
7
tc
-
-
-
h
h
k
a
g1

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
Vg
mAa
ra
gm
4.0
0.6
250
-2
1.0
66,000
1.5
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated April 09, 2015.
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