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CV1949

Sensibly equivalent to:
6D4 AFX212 EN93
    
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The CV1949 is a miniature thyratron. The prototype was the 6D4 that also appears on the glass.
The box anode hides the internal structure. The dark metal screen/heat sink below the double mica discs connects to the control grid. Double mica discs are used to strengthen the construction to ensure a long life in applications subject to shock and vibration.
The electrodes seen end on. The grid has a similar screen/heat sink at the top.
The thin glass tube envelope is 18 mm in diameter and, excluding the B7G base pins, is 46 mm tall.
Reference: Data-sheet.

 

Pin Connections
B7G
1
2
3
4
5
6
7
g1
ic
h
h
k
ic
a

 

Absolute Maximum Operating Conditions
General Notes
Vh
Ah
Va
mAa
6.3
0.25
250
25
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated March 27, 2021.
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