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41MH

Sensibly equivalent to:
CV2503
See also:
1931 Advert - Cossor Mica Bridge Mounting Advert
    
Extras ▼

 

The 41MH detector triode dates from 1930. The valve has external metallising and this screening indicates an RF use.
See also 41MH for a classic envelope version.
The balloon envelope is 48 mm in diameter and, excluding the B5 base pins, is 102 mm tall.
References: Data-sheet & 1043. Type 41MH was first introduced in 1930. See also 1930 adverts.

 

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
-1.5
3.2
18,000
4.0
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated February 05, 2022.
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