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12E1

Sensibly equivalent to:
5B/351D CV345 CV8025
See also:
Series Pass Valves - Stabilized Power Supplies - Mazda 12E1 Advert
    
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This 12E1 exhibit is in mint condition and arrived in its original box. We also have a rugged version 12E1R.
Through the holes in the side edge of the anode can be seen the aligned grids. This alignment will reduce the screen grid current and also valve dissipation. The grids are straight across the broad face of the anode and curved at the ends where they are held in vertical notched rods.
The 12E1 is a power output valve for use as a series pass valve in stabilised power supplies. The heavy demands placed on valves used as control elements in regulator circuits makes it vital that the ratings are not exceeded.
The classic envelope is 52 mm in diameter and, excluding the IO base pins, is 130 mm tall.
References: Datasheet & 1040. Type 12E1 was first introduced in 1952.

 

Pin Connections
IO
1
2
3
4
5
6
7
8
tc
-
h
-
g2
g1
-
h
k
a

 

Absolute Maximum Operating Conditions
Beam Tetrode
Vh
Ah
Va
Vs
6.3
1.6
800
300
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated July 02, 2014.
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