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A3283

Sensibly equivalent to:
CV4062
    
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The A3283 is a special quality low impedance audio output pentode for series heater chain use - television monitors. The GEC brand indicates a valve for the professional market rather than consumer.
The CV4062 is given as electrically equivalent by GEC but with a 6.3 Volt heater.
Thanks to John at Pacific TV for the image.
The thin glass envelope is  mm in diameter and, excluding the base pins, is  mm tall.
Reference: GEC Publication. Type A3283 was first introduced in 1956.

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
μ
13
0.3
300
300
-
12.0
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated May 01, 2020.
shape:thin.glass.tube construction:pinch type:pentode age:1950.1960 base:b7g heater:300ma pins:7 pin:
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