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CV1171

Sensibly equivalent to:
A40 AT4 HA1 NR50
    
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The CV1171 is an acorn triode. The prototypes were the HA1, AT4 and the A40. Prior to the CV register the service code was NR50.
Reference: Datasheet. Type CV1171 was first introduced in 1937.

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
Vg
mAa
gm
4.0
0.25
250
-7
-
2.2
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated February 12, 2015.
type:triode base: heater:4.0v pin:
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