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2V/400A

Sensibly equivalent to:
3B28 866A AH201 CV32 ESU866 RG3-250A
See also:
CV32 short entry
    
Extras ▼

 

The 2V/400A is a mercury vapour rectifier employing the original American standard AC heater voltage of 2.5 Volts. This exhibit was made by STC in England and STC was the subsidiary of the American ITT company.
The mercury coats the inside of the envelope but a clear view of the electrodes can be seen in 2V/400A.
The underside of the filament section can be seen complete with ceramic insulator. The locating pin for the bayonet holder is on the side of the base cap.
A closer view.
The balloon envelope is 62 mm in diameter, and excluding the UX4 base pins is 156 mm tall.
Reference: Datasheet. Type 2V/400A was first introduced in 1952.

 

Pin Connections
UX4
1
2
3
4
tc
f
-
-
f
a

 

Absolute Maximum Operating Conditions
Rectifier
Vh
Ah
Va
mAa
2.5
5.0
1,000
250
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated June 01, 2017.
shape:balloon construction:pinch type:rectifier.mv age:1940.1950 base:ux4 heater:2.5v pins:4 pin:1.f pin:2.- pin:3.- pin:4.f pin:tc.a
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