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PY801Sensibly equivalent¶ to:A61 U193 U349See also:
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The PY801 was specifically built as an efficiency diode for television line scan and the design dates to the early 1950s. Considerable energy is fed to the line deflection coils and this has to dissipate during flyback. The efficiency diode channels this energy back to the supply rail smoothing capacitors for use on the next line scan.
The discolouration of the glass testifies to a hard service life.The thin glass tube envelope is 21 mm in diameter and, excluding the B9A base pins, is 76 mm tall.References: Data-sheet, 3002 & 1040. |
Pin Connections
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | tc |  ic | ic | ic | h | h | ic | ic | ic | a | k |
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Absolute Maximum Operating Conditions¶
| Vh | Ah | Va | mAa | 
| 19 | 0.3 | 2,500 | 150 |
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Updated April 10, 2021.
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