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UU4


G8LSD Valve Collection
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Sensibly equivalent to:- 1867 - CV3759 - R2 - R42 - IW4-350 - MU12 - MU14
 
 
 
This exhibit was last updated on 03 February 2013
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Type UU4 is a indirectly heated full wave rectifier. The cathode is strapped to one side of the heater and so the heater has to be connected to a separate winding on the mains transformer.
The identification lettering is on the top of the dome.
Each anode is a complex pressed plate, blackened to make a better radiator.
The classic envelope is 42 mm in diameter and, excluding the B4 base pins, is 100 mm tall.
References: Datasheet, 1040 & 1043. Type UU4 was first introduced in 1936.
 
Pin Connections
B4
1
2
3
4
a(1)
a(2)
h,k
h
 
Absolute Maximum Operating Conditions
Rectifier
Vh
Ah
Va
mAa
4.0
2.2
400
120

Thanks to Frank Philipse for supplying the above PDF datasheet