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D15

Sensibly equivalent to:
CV1539
    
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The D15 is a current stabilising barretter. The current remains sensibly constant at 150 mA for voltages within the range 90 to 140. The barretter functions only within a series heater chain. The cold resistance is 240Ω.
The filament is a single strand looped over the supports. Traditionally the wire is iron and the low pressure gas inside the envelope is hydrogen.
The wide glass tube envelope is 39 mm in diameter, and excluding the IO base pins is 78 mm tall.
References: Datasheet, 1040 & 1043.

 

Pin Connections
IO
1
2
3
4
5
6
7
8
-
h
-
-
-
-
-
h

 

Absolute Maximum Operating Conditions
Stabiliser
Va
mAa
90-140
150
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated December11, 2013.
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