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UBF89Sensibly equivalent¶ to:10FD12 19FL8 WD119
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The UBF89 is an RF or IF amplifier pentode with two diodes sharing the common cathode.The screen blocks the main electrodes but through the hole in the screen the wire grids can be seen.The thin glass tube envelope is 20 mm in diameter, and excluding the B9A base pins is 59 mm tall.References: Data-sheet & 1040. Type UBF89 was first introduced in 1956. See also 1956 adverts. |
Pin Connections
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | g2 | g1 | k,s | h | h | a | a(d1) | a(d2) | g3 |
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Absolute Maximum Operating Conditions¶
| Vh | Ah | Va | Vs | Vg | mAa | mAs | ra | gm | μ |
| 19 | 0.1 | 200 | 100 | -0 | 11.0 | 3.3 | 0.3M | 3.5 | 20 |
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Updated February 26, 2013.
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