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S6F33FSensibly equivalent¶ to:
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The S6F33F is a special quality version of the 6F33 RF pentode, the structure is open with the anode being formed by two small plates that are strapped together. The suppressor grid is closely spaced and the valve has a very short suppressor grid control curve.The only difference between the S6F33 and the S6F33F is the flying leads rather than base pins.The maximum anode dissipation is 3 Watts and the fine wire screen grid dissipation is up to 1.5 Watts.The thin glass tube envelope is 18 mm in diameter, and excluding the base pins is 44 mm tall.References: Data-sheet, 1040 & Ray Cooper. Type S6F33F was first introduced in 1961. See also 1961 adverts. |
Pin Connections
| 1 | 2 | 3 | 4 | 5 | 6 | 7 |  g1 | k | h | h | a | g3,a(d) | g2 |
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Absolute Maximum Operating Conditions¶
| Vh | Ah | Va | Vs | Vg | mAa | mAs | gm | 
| 6.3 | 0.35 | 300 | 300 | - | - | - | 4.0 |
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Updated May 07, 2025.
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