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LL4Sensibly equivalent¶ to:054V 41MXP ACP1 PA1
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The LL4 from Tungsram is a driver/output triode. The load should be 11 kΩ and the valve will deliver 1.0 Watt. The cathode resistor is given as 900 Ω.
The B5 Base.Thanks to Mark Mallison for sending the images.The classic envelope is mm in diameter and, excluding the B5 base pins, is mm tall.References: Data-sheet. Type LL4 was first introduced in 1937. See also 1937 adverts. |
Pin Connections
| 1 | 2 | 3 | 4 | 5 |  a | g1 | h | h | k |
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Absolute Maximum Operating Conditions¶
| Vh | Ah | Va | Vg | mAa | ra | gm | 
| 4.0 | 1.2 | 400 | -10.0 | 18.0 | 2,000 | 3.5 |
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PDF scanned from an original document held by the museum |
Updated November 04, 2024.
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