ECC81 Datasheet | Unknown Manufacturer

"Ei-RC" - Electronic tubes factory Data Sheet Page 1 of 4 ECC81/12AT7 .. ECC81 is R.F. Double Triode Quick reference data - - - Anode current Ia=10m A Transcoductance S=5,5m A/V Amplification µ=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 Telephone: FAX: Postal address: Electronic mail: Web site: Vf If 6,3 300 9-(4+5) 12 150 4-5 (V) (m A) +381 18 550 741 +381 18 550 806 Bul. Sv. Cara Konstantina 80-86, 18000 Nis, Yugoslavia eirc@eierc. http://.eierc./rc/default.htm "Ei-RC" - Electronic tubes factory Data Sheet Page 2 of 4 ECC81/12AT7 Dimensions and connections Base: Noval .. Typical characteristics and operating conditions Anode voltage Grid voltage Anode current Transconductance Amplification Internal resistance Telephone: FAX: Postal address: Electronic mail: Web site: Va Vg Ia S µ Ri 100 -1,0 3,0 3,75 62 16,5 170 -1,0 8,5 5,9 66 11 200 -1,0 11,5 6,7 70 10,5 250 (V) -2,0 (V) 10 (m A) 5,5 (m A/V) 60 11 (kΩ) +381 18 550 741 +381 18 550 806 Bul. Sv. Cara Konstantina 80-86, 18000 Nis, Yugoslavia eirc@eierc. http://.eierc./rc/default.htm "Ei-RC" - Electronic tubes factory Data Sheet Page 3 of 4 ECC81/12AT7 Limiting - maximal values (design center rating system) Anode voltage Anode dissipation Cathode current Grid voltage Grid resistor (automatic bias) Cathode to heater voltage Vao Va Wa Ik Vg Rg Vkf 550 300 2,5 15 -50 1 90 (V) (W) (m A) (V) (MΩ)...