The EF80 internally screened pentode was a workhorse of the VHF TV receiver and was introduced in mid 1950 to replace the EF91. Here we have the EF80A a variant that we can find no data for, and so the EF80 data is presented.![](../pics/aaq0281a.jpg)
The construction seems to be the same as the regular EF80.The thin glass tube envelope is 20 mm diameter and excluding the B9A base pins, is 60 mm tall.References: Data-sheet & 1040. |
Pin Connections
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | ![](../static/key.gif) k | g1 | k | h | h | s | a | g2 | g3 |
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Absolute Maximum Operating Conditions¶
| Va | Vs | Vg | mAa | mAs | ra | gm | ![](../static/pdflogo.gif)
| 170 | 170 | -2 | 10 | 2.5 | 0.4M | 7.4 |
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Updated April 01, 2014.
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