The DF11 is a directly heated battery pentode for use at HF and IF in radio receivers.![](../pics/abo0086a.jpg)
The makers name and logo together with the Type designation.The wide metal tube envelope is 36 mm in diameter, and excluding the footless base pins is 44 mm tall.References: Data-sheet, 1040 & 1043. Type DF11 was first introduced in 1940. See also 1940 adverts. |
Pin Connections
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | ![](../static/key.gif) g2 | g1 | f(-),m,g3 | nc | f(+) | f(-) | nc | a |
|
|
Absolute Maximum Operating Conditions¶
| Vh | Ah | Va | Vs | Vg | mAa | mAs | ra | gm | ![](../static/pdflogo.gif)
| 1.2 | 0.025 | 120 | 60 | -0 | 1.2 | 0.22 | 1M | 0.7 |
|
Updated January 09, 2022.
|
|