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SD2

 
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Triotron Valve Range Advert
    
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The SD2 is a 2 volt battery triode designed for use as a detector or first stage audio amplifier.
The identification on the envelope carries the makers logo and brief details of operating characteristics. The attached data-sheet is taken from the Triotron 1931 booklet.
The balloon envelope is 48 mm in diameter, and excluding the B4 base pins is 87 mm tall.
References: Data-sheet & 1043. Type SD2 was first introduced in 1929.

 

Pin Connections
B4
1
2
3
4
a
g1
f
f

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
Vg
mAa
ra
gm
μ
2.0
0.14
150
-3
-
10,400
2.0
21
PDF scanned from an original document held by the museum
Updated August 11, 2017.
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