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5866

Sensibly equivalent to:
CV1924 TY2-125
    
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The 5866 is a power triode for use up to 200 MHz and it has an anode dissipation of 136 Watts. This Amperex valve is marked as Made in Holland.
The shaped graphite anode has a four point connection to the top cap.
The top of the anode: the close wound grid is easily seen and just visible is the open helix of the filament.
The wide glass tube envelope is 59 mm in diameter, and excluding the B5F base pins is 106 mm tall.
Reference: Datasheet.

 

Pin Connections
B5F
1
2
3
4
5
tc
f
g1
g1
g1
f
a

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
Vg
mAa
6.3
5.4
2,500
-150
175
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated August 16, 2017.
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