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UU12

Sensibly equivalent to:
6CA4 CV5072 EZ81 U709
    
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The UU12 was Mazda's version of the EZ81 full wave rectifier, giving 150 mA.
The maximum reservoir capacitor was 50 µF and the minimum series resistance had to be 240 Ohms per anode.
The thin glass tube envelope is 20 mm in diameter, and excluding the B9A base pins, is 67 mm tall.
References: Datasheet & 1040. Type UU12 was first introduced in 1954.

 

Pin Connections
B9A
1
2
3
4
5
6
7
8
9
a(1)
ic
k
h
h
ic
a(2)
ic
ic

 

Absolute Maximum Operating Conditions
Rectifier
Vh
Ah
Va
mAa
6.3
1.0
350
150
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated January 31, 2013.
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