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4C35

Sensibly equivalent to:
CV1787 FX2505 PL435 XH8-100
    
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The 4C35 is a hydrogen thyratron designed for switching in line modulator circuits of microwave radar. Other uses include induction heating and pulse modulation.
The base pins set in ceramic.
The screening cylinder hides the inner structure. The anode lies within the upper mesh part.
The flat anode disc can be seen through the mesh.
The re-entrant glass top with the anode encased in a glass tube.
The wide glass tube envelope is 63 mm in diameter, and excluding the base pins is 152 mm tall.
References: Data-sheet. Type 4C35 was first introduced in 1954. See also 1954 adverts.

 

Pin Connections
1
2
3
4
tc
g1
h,k
h
k
a

 

Absolute Maximum Operating Conditions
The Thyratron
Vh
Ah
Va
6.3
6.0
2,500
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated May 21, 2021.
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