The Pen428 is an audio output pentode for use in amplifiers with 20-30 Watts output. A pair of Pen428's would be operated in Class AB push pull.References: Data-sheet & 1043. |
Pin Connections
| 1 | 2 | 3 | 4 | 5 | 6 | 7 |  nc | g1 | g2 | h | h | k | a |
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Absolute Maximum Operating Conditions¶
| Vh | Ah | Va | Vs | Vg | mAa | mAs | ra | gm | rk | rl | Pout | D | 
| 4.0 | 2.1 | 250 | 250 | - | 72.0 | - | - | - | 150 | 3,200 | 8.0W | 10% |
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Thanks to Andy Cowley for supplying the above PDF datasheet. |
Updated January 08, 2022.
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