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6K7Sensibly equivalent¶ to:See also:
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The 6K7 pentode was designed for intermediate frequency amplifiers in 'modern' superhet type receivers during the mid 1930s. A couple of years later the slightly changed single ended version 6SK7 appeared.It is high impedance allowing for a high Q in the tuned anode circuit. It has a long grid base allowing for the stage gain to be altered according to the grid bias applied. Thus this a variable-μ valve where the gain is to be controlled by and AGC voltage developed at the detector stage. This was usually an additional diode. Typically within a double diode triode such as the 6Q7.See also 6K7G for the glass envelope version.![](../pics/aby0011a.jpg)
The RCA logo.The thin metal envelope is 25 mm in diameter and, excluding the IO base pins, is 63 mm tall.References: Data-sheet & 1040. Type 6K7 was first introduced in 1936. See also 1936 adverts. |
Pin Connections
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | tc | ![](../static/key.gif) m | h | a | g2 | g3 | nc | h | k | g1 |
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Absolute Maximum Operating Conditions¶
| Vh | Ah | Va | Vs | Vg | mAa | mAs | ra | gm | ![](../static/pdflogo.gif)
| 6.3 | 0.3 | 250 | 125 | -3 | 10.5 | 2.6 | 0.6M | 1.65 |
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Updated May 13, 2016.
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