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CCaSensibly equivalent¶ to:
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The CCa is a miniature double triode with an inter valve screen. The Siemens catalogue lists the applications that this high mutual conductance valve is suited to as:- A low noise universal twin triode for cascode, mixer and phase inverter stages, multivibrator and cathode coupled amplifiers.For class A amplifier service the typical operating conditions would be an anode voltage of 220V and anode current of 9.2 mA. The load resistance would be 20 k Ohms.Thanks to Kajetan Rozycki for the data from the Siemens 1962-3 catalogue.The thin glass tube envelope is 19 mm in diameter and, excluding the B9A base pins, is 48 mm tall.References: Data-sheet & Kajetan Rozycki. Type CCa was first introduced in 1958. See also 1958 adverts. |
Pin Connections
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | a(2) | g1(2) | k(2) | h | h | a(1) | g1(1) | k(1) | s |
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Absolute Maximum Operating Conditions¶
| Vh | Ah | Va | Vg | mAa | ra | gm |
| 6.3 | 0.3 | 220 | -1 | 15.0 | 20k | 12.5 |
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Updated February 22, 2013.
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