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TH41Sensibly equivalent¶ to:CV1411See also:
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The TH41 is a triode heptode mixer for mains receivers. The data-sheet says that it was specifically designed for 'all-wave' receivers ie including short wave up to 30 MHz.The pin-out matches that of the the TH233 (200mA heater for series heater chains) but the mutual conductance is much higher.![](../pics/aaq0424a.jpg)
The reverse is plain zinc paint external screening.The classic envelope is 32 mm in diameter, and excluding the MO base pins is 93 mm tall.References: Data-sheet, 1040 & 1043. Type TH41 was first introduced in 1939. See also 1939 adverts. |
Pin Connections
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | tc | ![](../static/key.gif) h | k | a | a(t) | g1(t),g3 | m | g2,g4 | h | g1 |
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Absolute Maximum Operating Conditions¶
| Vh | Ah | Va | Vs | Vg | mAa | mAs | ra | gm | ![](../static/pdflogo.gif)
| 4.0 | 1.3 | 250 | 250 | -3 | 3.0 | 6.0 | 1.6M | 3.1 |
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Updated November 04, 2020.
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