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R19Sensibly equivalent¶ to:See also:
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The R19 is an EHT rectifier for television service. The anode voltage quoted is the peak inverse voltage and this is important in a television EHT generator as the waveform is pulsed and not a sine wave.The R12 has a higher specification than the 1X2B and can be used as a direct substitute for the 1X2B.
The filament screen can be seen below the anode as a circular plate with a central hole for the filament.The thin glass tube envelope is 20 mm in diameter, and excluding the B9A base pins is 62 mm tall.References: Data-sheet & 1040. |
Pin Connections
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | tc |  s | f | nc | s | f | s | nc | f | f | a |
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Absolute Maximum Operating Conditions¶
| Vh | Ah | Va | mAa | 
| 1.25 | 0.2 | 25,000 | 2.0 |
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Updated January 05, 2022.
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