Essential details
Quantity(pieces):2
MOQ:10 pairs
Lead time:30~45 days after receipt of deposit and confirmed artwork all the details.
Shipping:Ocean freight
Product Introduction
KT66GC/KT66GE
Beam power tetrode KT66GC/KT66GE with an anode limit dissipation power of 25 W. Amplified in audio amplifiers of classes A1, AB1
and AB2. Hot wire heating
UH............ 6.3 V
IH ............ 1.27 A
Ultimate rating
Tetraode connection Triode connection
Anode voltage .................. 500V 400V
Second gate voltage ............ 400V
Anode power dissipation ............ 25W 25W
Second gate power dissipation ......3.5W
Cathode current .................. 200 mA
Inter-cathode voltage of the hot wire ......... 100 V
First gate resistance
At self-biasing
0.5 MΩ
at fixed bias
0.1 MΩ
Inter-pole capacitance
Tetrode connection Triode connection
Input capacitance ......... 16 8.7 PF
Output capacitance ......... 11.5 15.8 PF
Cross-circuit capacitance ......... 1.1 7.2 PF
Beam power tetrode KT66GC/KT66GE with an anode limit dissipation power of 25 W. Amplified in audio amplifiers of classes A1, AB1
and AB2. Hot wire heating
UH............ 6.3 V
IH ............ 1.27 A
Ultimate rating
Tetraode connection Triode connection
Anode voltage .................. 500V 400V
Second gate voltage ............ 400V
Anode power dissipation ............ 25W 25W
Second gate power dissipation ......3.5W
Cathode current .................. 200 mA
Inter-cathode voltage of the hot wire ......... 100 V
First gate resistance
At self-biasing
0.5 MΩ
at fixed bias
0.1 MΩ
Inter-pole capacitance
Tetrode connection Triode connection
Input capacitance ......... 16 8.7 PF
Output capacitance ......... 11.5 15.8 PF
Cross-circuit capacitance ......... 1.1 7.2 PF
Static parameters
-Ug1(approx)...15V
Gm .....................6.3mA/V
ri ..................... 22.5KΩ
RL ............... 2.2KΩ
Pout ..................7.25W
Dtot ............... 9.0%
-Ug1(approx)...15V
Gm .....................6.3mA/V
ri ..................... 22.5KΩ
RL ............... 2.2KΩ
Pout ..................7.25W
Dtot ............... 9.0%
Recommended operating conditions (reference values)
Single tube Class A1 amplification, triode connection
Ua, g2 .................. 400 250 V
-Ug1 ............ 38 19 V
Rk(per tube).................. 600 Ω 350 Ω
RL ..................... 4.5 2.75 kΩ
Ia(0)..................... 63mA 60mA
Gm ..................... 5.5mA/V /
ri ..................... 14.5KΩ /
Pout ..................... 5.8W 2.2W
Dtot ............... 7% 6.0%
Single tube Class A1 amplification, triode connection
Ua, g2 .................. 400 250 V
-Ug1 ............ 38 19 V
Rk(per tube).................. 600 Ω 350 Ω
RL ..................... 4.5 2.75 kΩ
Ia(0)..................... 63mA 60mA
Gm ..................... 5.5mA/V /
ri ..................... 14.5KΩ /
Pout ..................... 5.8W 2.2W
Dtot ............... 7% 6.0%
Push-pull tube class A1 amplification, triode connection
Ua, g2 .................. 400 250 V
-Ug1 ............ 38 20V
Rk(per tube)............... 600 Ω 360 Ω
RL ..................... 4 2. 5 kΩ
Ia(0)..................... 2X 62.5mA 2X 55Ma
ū(g1-g1.pk) ............ 80 V 40 V
Pout ..................... 14.5W 4.5W
Dtot ............... 3.5% 4.5%
Ua, g2 .................. 400 250 V
-Ug1 ............ 38 20V
Rk(per tube)............... 600 Ω 360 Ω
RL ..................... 4 2. 5 kΩ
Ia(0)..................... 2X 62.5mA 2X 55Ma
ū(g1-g1.pk) ............ 80 V 40 V
Pout ..................... 14.5W 4.5W
Dtot ............... 3.5% 4.5%
Push-to-swap class AB1 amplification, ultra-linear connection
Fixed bias Self-biasing
Ua .................. 552 450 V
Ug2 .................. 525 425 V
-Ug1............ 67 35V
Rk........................ 560 Ω /
RL(a-a) ..................8 7 kΩ /
ū(g1-g1.pk) ...... 127 V
Ia+g2(0) ............... 2 x 35 2 x 62.5 mA
Ig+Ig2(max.sig)...... 2×80 2×72.5 mA
Pout ..................... 50 32W
Dtot .................. 3 2 %
Fixed bias Self-biasing
Ua .................. 552 450 V
Ug2 .................. 525 425 V
-Ug1............ 67 35V
Rk........................ 560 Ω /
RL(a-a) ..................8 7 kΩ /
ū(g1-g1.pk) ...... 127 V
Ia+g2(0) ............... 2 x 35 2 x 62.5 mA
Ig+Ig2(max.sig)...... 2×80 2×72.5 mA
Pout ..................... 50 32W
Dtot .................. 3 2 %
Product details
