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EH2

 
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Pentagrid Converters
    
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The EH2 made by Mullard's parent company Philips used the continental Ct8 base that was never popular with British Manufacturers, but enjoyed success in Europe. The EH2 is a Heptode designed as a mixer or frequency changer for superhet receivers.
An unusual feature is the picture of an aeroplane on the back of the envelope.
The classic envelope is 30 mm in diameter, and excluding the Ct8 base pins, is 83 mm tall.
Reference: Datasheet. Type EH2 was first introduced in 1938.

 

Pin Connections
Ct8
1
2
3
4
5
6
7
8
tc
m
h
h
k
g3
g4
g2
a
g1

 

Absolute Maximum Operating Conditions
Heptode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
6.3
0.2
250
100
-3
1.1
1.0
2M
0.55
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated February 22, 2013.
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