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DM71

Sensibly equivalent to:
1M1 1M3 Y25
    
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The DM71 is a subminiature tuning indicator. It was designed for use in FM tuners, tape recorders etc. It features high sensitivity.
The exclamation mark cut-out allows the glow to be seen.
The thin glass tube envelope is 10 mm in diameter, and excluding the base pins is 43 mm tall.
References: data-sheet & 3002. Type DM71 was first introduced in 1952. See also 1952 adverts.

 

Pin Connections
1
2
3
4
5
6
7
8
g1
ic
nc
f
f
nc
nc
a

 

Absolute Maximum Operating Conditions
CRT
Vh
Ah
Va
Vg
mAa
1.4
0.025
250
-10
0.3
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated January 05, 2022.
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