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C301ASensibly equivalent¶ to:
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The Cunningham C301A (C-301A) is equivalent to the UV201A. This exhibit also has phosphorus gettering. These were known as 'Rainbow Tubes' and phosphorus gettering was common in Cunningham valves.Through the bulb can be seen the vertical triode assembly.The original box with the Type designation expressed as C-310-A. This Cunningham valve was also made by General Electric.Thanks to Joe Gruber for sending the images.The envelope is mm in diameter and, excluding the UV base pins, is mm tall.References: 1047 & Joe Gruber. Type C301A was first introduced in 1922. See also 1922 adverts. |
Pin Connections
| 1 | 2 | 3 | 4 | g1 | f | f | a |
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Absolute Maximum Operating Conditions¶
| Vh | Ah | Va |
| 5.0 | 0.25 | 20-100 |
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Updated February 12, 2021.
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