TUBEOFILE
6K6 — Power Pentode, Octal | Tubeofile | Tubeofile
← Browse High quality — base, heater, all universal parameters present, and ≥50% of desirable parameters filled in. Safe to use for design decisions.
Known Equivalents & Substitutes
6K6GT 6K6-GT 6K6-G 41 CV1938 CV1940 VT152 VT152A 7B5E VT52 VT102
Electrical Specifications
Section 1 — Pentode
Absolute Maximum
Anode Voltage (max) Anode Voltage (max) 315V
Screen Voltage (max) Screen Voltage (max) 285V
Anode Dissipation (max) Anode Dissipation (max) 8.5W
Screen Dissipation (max) Screen Dissipation (max) 2.8W
Notes
Electrically identical to type 41 (pre-octal base version). Pin 1 (and pin 6) are omitted on 6-pin base variants (JETEC B6-81, B6-84). Grid-No.1 circuit resistance: 0.1 MΩ max for fixed-bias, 0.5 MΩ max for cathode-bias (pentode); 2.2 MΩ max for cathode-bias in triode/vertical deflection service. Triode-connected maximum plate dissipation is reduced to 7.0 W (vs 8.5 W in pentode mode). 7B5E is a Loctal-base version released in 1950. Pin Layout — Octal
1 2 3 4 5 6 7 8
1 No Connection
2 Heater
3 Anode (Plate)
4
Socket-Compatible Tubes ⚠ Not electrically compatible
Heater-to-Cathode Voltage (max)
Heater-to-Cathode Voltage (max)
200V
Max Grid Resistor Max Grid Resistor (cathode bias) 0.5MΩ
Typical Operating
Anode Voltage (typical) Anode Voltage (typical) 250V
Screen Voltage (typical) Screen Voltage (typical) 250V
Grid 1 Bias Voltage Grid 1 Bias Voltage -18V
Anode Current Anode Current 32mA
Screen Current Screen Current 5.5mA
Anode Resistance Anode Resistance 90,000Ω
Transconductance Transconductance 2.3mA/V
Output
Output Power Output Power 3.4W
Load Impedance Load Impedance 7,600Ω
Capacitances
Grid-to-Plate Capacitance Grid-to-Plate Capacitance 0.5pF
Input Capacitance Input Capacitance 5.5pF
Output Capacitance Output Capacitance 6pF
Section 2 — Triode Strapped
Absolute Maximum
Anode Voltage (max) Anode Voltage (max) 315V
Anode Dissipation (max) Anode Dissipation (max) 7W
Cathode Current (max) Cathode Current (max) 25mA
Max Grid Resistor Max Grid Resistor (cathode bias) 2.2MΩ
Typical Operating
Anode Voltage (typical) Anode Voltage 250V
Grid 1 Bias Voltage Grid 1 Bias Voltage -18V
Anode Current Anode Current 37.5mA
Anode Resistance Anode Resistance 2,500Ω
Transconductance Transconductance 2.7mA/V
Amplification Factor (μ) Amplification Factor (μ) 6.8—
Heater
Heater Voltage Heater Voltage 6.3V
Heater Current Heater Current 0.4A
Screen Grid (g2)
8 Cathode and Suppressor Grid (g3)