"Ei-RC" - Electronic tubes factory ECC81/12AT7 ECC81 is R.F. Double Triode Data Sheet Page 1 of 4 Quick reference data Anode current Ia=10mA Transcoductance S=5,5mA/V Amplification ยต=60 Heating Heating is indirect by AC od DC, with serial or parallel supply. Please note that, in case of serial supply, a current limiting device must be inserted in the heater circuit for limiting the current when switching on. Heater voltage Heater current pins Vf 6,3 12 (V) If 3.
