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ECF80Sensibly equivalent¶ to:See also:
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The ECF80 was designed for operation up to 220 MHz. As 1950s television receivers tended to use the PCFnn 300 mA valves, the production of this valve with a 6.3 Volt heater suggests that it was aimed at the professional VHF communications market.The triode is the oscillator and has to produce 5 V pk-pk signal. The screened pentode is the mixer. The valve has two cathodes so two independent valves are sited in the one envelope.![](../pics/aaa1491a.jpg)
The triode on the left with the pentode on the right. The later ECF82 is a triode beam tetrode.The thin glass tube envelope is 20 mm in diameter and, excluding the B9A base pins, is 48 mm tall.References: Data-sheet & 1040 Type ECF80 was first introduced in 1954. See also 1954 adverts. |
Pin Connections
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | ![](../static/key.gif) a(t) | g1 | g2 | h | h | a | k,s,g3 | k(t) | g1(t) |
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Absolute Maximum Operating Conditions¶
| Vh | Ah | Va | Vs | Vg | mAa | mAs | ra | gm | ![](../static/pdflogo.gif)
| 6.3 | 0.43 | 250 | 180 | -5.8 | 5.7 | 1.4 | 1.5M | 5.5 |
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Absolute Maximum Operating Conditions¶
| Va | Vg | mAa | ra | gm | ![](../static/key.gif)
| 100 | -2 | 14 | 4K | 5 |
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Updated March 08, 2020.
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