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CCH35

 
    
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The CCH35 is described by Mullard as a triode hexode for use as a frequency changer. The hexode section is designed for operation with AGC and thus has a variable-μ characteristic.
The CCH35 is designed for universal mains sets (AC or DC) and the heater is for series connection and runs at 0.2 Amp. The ECH35 is for AC mains and parallel heater connections with the 6.3 Volt standard imported from America.
This exhibit is the only one of the three we have in the museum that carries the Mullard label or Made in Britain.
The reverse of the envelope is plain.
The classic envelope is 34 mm in diameter and, excluding the IO base pins is 94 mm tall.
References: Data-sheet, 1040 & 1043. Type CCH35 was first introduced in 1940. See also 1940 adverts.

 

Pin Connections
IO
1
2
3
4
5
6
7
8
tc
m
h
a
g2,g4
g1(t),g3
a(t)
h
k
g1

 

Absolute Maximum Operating Conditions
Hexode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
7
0.2
250
100
-2
2.3
3
1.25M
0.65

 

Absolute Maximum Operating Conditions
Triode
Va
150
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated October 12, 2018.
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