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6AQ5ASensibly equivalent¶ to:6669 6HG5
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The 6AQ5A is a small audio output beam tetrode valve capable of 4.5 Watts in a single ended configuration. The A variant indicates a controlled warm-up time.The heater at 450 mA would be suitable for use in American series heater chain equipment. The controlled warm-up would bring up the audio output last.
The sylvania logo printed on the glass. The inner construction is hidden by the anode. The thin glass tube envelope is 18 mm in diameter and excluding the B7G base pins, is 59 mm long.References: Data-sheet & 1040. Type 6AQ5A was first introduced in 1958. See also 1958 adverts. |
Pin Connections
| 1 | 2 | 3 | 4 | 5 | 6 | 7 |  g1 | k,bp | h | h | a | g2 | g1 |
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Absolute Maximum Operating Conditions¶
| Vh | Ah | Va | Vs | Vg | mAa | ra | rk | rl | gm | Pout | 
| 6.3 | 0.45 | 250 | 250 | -12.5 | 45 | 52,000 | 240 | 5,000 | 4.1 | 4.5W |
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Updated February 16, 2021.
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