The Tungsram is a battery vari-μ RF tetrode for radio use for RF or IF amplification. The SE211 seems to have the same characteristics as the C variant.
The B4 base and pins.Thanks to Mark Mallison for sending the images.The classic envelope is mm in diameter and, excluding the B4 base pins, is mm tall.References: Data & 1043. Type SE211C was first introduced in 1936. See also 1936 adverts. |
Pin Connections
| 1 | 2 | 3 | 4 | tc |  g2 | g1 | f | f | a |
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Absolute Maximum Operating Conditions¶
| Vh | Ah | Va | Vs | Vg | mAa | mAs | ra | gm |
| 2.0 | 0.12 | 15 | 75 | | 1.0 | 0.1 | 1.5M | 1.5 |
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Updated December29, 2022.
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