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ECH42Sensibly equivalent¶ to:See also:
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The ECH42 is a triode hexode mixer in an all glass envelope fitted with a B8A base and designed for radio receivers.The base with 8 pointed pins equi-spaced around the circumference of the pin circle. A locating pip moulded into the 22 mm lower section can be seen in the centre of the picture.See also UCH42 with a 100 mA heater for series heater chains.The thin glass tube envelope is 20 mm in diameter, and excluding the B8A base pins is 54 mm tall.References: Data-sheet & 1040. Type ECH42 was first introduced in 1949. See also 1949 adverts. |
Pin Connections
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | h | a | a(t) | g1(t),g3 | g2,g4 | g1 | k | h |
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Absolute Maximum Operating Conditions¶
| Vh | Ah | Va | Vs | Vg | mAa | mAs | ra | gm |
| 6.3 | 0.23 | 250 | 85 | -2.0 | 3.2 | 3.75 | 1.0M | 0.71 |
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Updated December18, 2020.
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