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H210

Sensibly equivalent to:
B228
    
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The H210 from Osram is a battery triode and was introduced in 1929.
The anode lies horizontally across the top of the envelope. The supports reach to either side for rigidity.
The balloon envelope is 41 mm in diameter, and excluding the B4 base pins is 74 mm tall.
Reference: 1043. Type H210 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
0.1
150
-1.5
1.0
50,000
0.7
35
Updated November 10, 2013.
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