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30A5Sensibly equivalent¶ to:HL94
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The 30A5 is a power audio output pentode designed for operation with low anode voltages and in transformerless designs. It can deliver 2.1 Watts at 11% total distortion.Thanks to Graeme Hirst for sending these valves for photographing.The thin glass tube envelope is 17.5 mm in diameter, and excluding the B7G base pins is 60 mm tall.Reference: Data-sheet. Type 30A5 was first introduced in 1956. See also 1956 adverts. |
Pin Connections
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | g3,k | g1 | h | h | g1 | g2 | a |
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Absolute Maximum Operating Conditions¶
| Vh | Ah | Va | Vs | Vg | mAa | mAs | ra | gm | Pdiss |
| 30.0 | 0.15 | 150 | 150 | -6.7 | 43 | 3 | 22,000 | 9.2 | 7.5W |
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Updated February 20, 2013.
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