Operating 71A above published max plate voltage

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According to all of the data sheets I have seen, the 71A is rated for a maximum plate voltage of 180V at 20mA current, which equals 3.6W plate dissipation. I am considering to use it at 200-225V at 12mA, translating to 2.4-2.7W, less than maximum plate dissipation. Has anyone tried this and will running only this much above max plate voltage cause arcing or other problems?

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Topic - Operating 71A above published max plate voltage - Donald North 11:01:08 07/22/17 (6)

RE: Operating 71A above published max plate voltage - Paul Joppa 21:45:58 07/22/17 (4)

RE: Operating 71A above published max plate voltage - Donald North 10:04:33 07/23/17 (3)

RE: Operating 71A above published max plate voltage - Triode_Kingdom 12:16:22 07/23/17 (0)

RE: Operating 71A above published max plate voltage - Caucasian Blackplate 10:35:23 07/23/17 (0)

RE: Operating 71A above published max plate voltage - coffee-phil 10:26:35 07/23/17 (0)

RE: Operating 71A above published max plate voltage - Eli Duttman 13:02:05 07/22/17 (0)

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