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6063

Sensibly equivalent to:
CV4005 QA2407 U78
    
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The 6063 is a special quality version of the commercial U78 miniature HT full wave rectifier. The construction is of two anodes set around a common cathode assembly and the SQ version has double micas top and bottom to prevent early damage due to vibration.
Research into modes of failure of valves subject to vibration, as found in aircraft etc., found that adding a second sheet greatly reduced the destruction of the mica.
The GEC paper logo. Marconi and Osram were the commercial brands of M-OV and GEC (the parent company) the professional brand.
The secondary lettering. The valve is also labeled CV4005.
The thin glass tube envelope is 18 mm in diameter and, excluding the B7G base pins, is 60 mm tall.
References: Datasheet & 1040. Type 6063 was first introduced in 1951.

 

Pin Connections
B7G
1
2
3
4
5
6
7
a(2)
-
h
h
-
a(1)
k

 

Absolute Maximum Operating Conditions
Rectifier
Vh
Ah
Va
mAa
6.3
0.6
325
70
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated September 24, 2018.
shape:thin.glass.tube construction:all.glass type:rectifier.fw age:1950.1960 base:b7g heater:6.3v pins:7 pin:1.a(2) pin:2.- pin:3.h pin:4.h pin:5.- pin:6.a(1) pin:7.k
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