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EM81

Sensibly equivalent to:
6DA5 CV5055
See also:
Tuning Indicators
    
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The EM81 is a side viewing tuning indicator. This exhibit is amazing in the fact that the printing on the envelope covers the viewing window.
The Mullard version of the same valve does not obscure its own window.
The thin glass tube envelope is 20 mm in diameter and, excluding the B9A base pins, is 57 mm tall.
References: Datasheet & 1040. Type EM81 was first introduced in 1956.

 

Pin Connections
B9A
1
2
3
4
5
6
7
8
9
g1
k,g1(1)
ic
h
h
ic
a
ic
t

 

Absolute Maximum Operating Conditions
Indicator
Vh
Ah
Va
mAa
6.3
0.3
250
2.3
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated November 18, 2013.
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