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HP4106Sensibly equivalent¶ to:E447 S434N
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The Tungsram HP4106 is a variable-μ Rf pentode. It was made with both B5 and B7 base caps and both types were released in 1935.![](../pics/abo0138a.jpg)
The reverse of the envelope is plain gold coloured zinc paint.The classic envelope is 51 mm in diameter, and excluding the B5 base pins is 129 mm tall.Reference: 1043. Type HP4106 was first introduced in 1935. See also 1935 adverts. |
Pin Connections
| 1 | 2 | 3 | 4 | 5 | tc | ![](../static/key.gif) g2 | g1 | h | h | k,g3 | a |
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Absolute Maximum Operating Conditions¶
| Vh | Ah | Va | Vs | Vg | mAa | mAs | ra | gm | μ | ![](../static/key.gif)
| 4.0 | 1.0 | 500 | 100 | -2 | 5.0 | 1.25 | 1.2M | 3.5 | |
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Updated January 15, 2015.
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