TUBEOFILE
6DE7 — Compound (multi-section), Noval | Tubeofile
Known Equivalents & Substitutes
10DE7 13DE7
Similar Tubes (Not Drop-In Compatible)
Brans cross-lists in same group. Octal (8BD) base. Both sections have different mu values (22.5/15.4 vs 17.5/6.0). Not a drop-in. Same Noval 9HF pinout. Section #2 identical per Tung-Sol datasheet, but Section #1 differs significantly (6DR7 mu=68 vs 6DE7 mu=17.5). Not a drop-in replacement. Brans cross-lists in same group. Similar dissimilar twin triode but Octal (8BD) vs Noval (9HF) base, different pin topology. 6EM7 Section 1 has much higher mu (68 vs 17.5). Same Noval 9HF pinout and dissimilar double triode structure with identical Section 1 (mu=17.5). Section 2 differs: 6EW7 has higher gm (7.5 vs 6.5 mA/V), lower ra (800 vs 925 ohms), and higher Pa_max (10W vs 7W). Brans cross-lists in same group. Novar base. Section 1 has much higher mu (64 vs 17.5). Different base and pin topology. Electrical Specifications
Section 1 — Medium-Mu Triode
Absolute Maximum
Anode Voltage (max) Max DC Plate Voltage 330V
Anode Dissipation (max) Max Plate Dissipation 1.5W
Cathode Current (max) Max Average Cathode Current 22mA
Heater-to-Cathode Voltage (max) Max Heater-Cathode Voltage 200V
Notes
Dissimilar dual triode: Section #1 (medium-mu, pins 5/6/7/8) is intended as vertical deflection oscillator; Section #2 (low-mu, pins 1/2/3/9) is intended as vertical deflection amplifier. Except for heater ratings and heater warm-up time, the 6DE7 is identical to the 10DE7 and 13DE7 (Tung-Sol datasheet). Section #2 is identical to section #2 of the 6DR7 (Tung-Sol datasheet). Pin 2 and Pin 3 are both connected to the control grid of Unit No.2 (dual grid pins). Heater positive with respect to cathode must not exceed 100V DC component. Pin Layout — Noval
1 2 3 4 5 6 7 8 9
1 Plate (Unit No.2)
2 Grid (Unit No.2)
3 Grid (Unit No.2)
Socket-Compatible Tubes ⚠ Not electrically compatible
Max Grid Resistor Max Grid Circuit Resistance
2.2MΩ
Typical Operating
Anode Voltage (typical) Plate Voltage 250V
Grid 1 Bias Voltage Grid Voltage -11V
Anode Current Plate Current 5.5mA
Anode Resistance Plate Resistance 8,750Ω
Transconductance Transconductance 2mA/V
Amplification Factor (μ) Amplification Factor 17.5—
Capacitances
Grid-to-Plate Capacitance Grid to Plate Capacitance 4pF
Input Capacitance Grid to Cathode and Heater Capacitance 2.2pF
Output Capacitance Plate to Cathode and Heater Capacitance 0.52pF
Section 2 — Low-Mu Triode
Absolute Maximum
Anode Voltage (max) Max DC Plate Voltage 275V
Anode Dissipation (max) Max Plate Dissipation 7W
Cathode Current (max) Max Average Cathode Current 50mA
Heater-to-Cathode Voltage (max) Max Heater-Cathode Voltage 200V
Max Grid Resistor Max Grid Circuit Resistance 2.2MΩ
Typical Operating
Anode Voltage (typical) Plate Voltage 150V
Grid 1 Bias Voltage Grid Voltage -17.5V
Anode Current Plate Current 35mA
Anode Resistance Plate Resistance 925Ω
Transconductance Transconductance
Capacitances
Grid-to-Plate Capacitance Grid to Plate Capacitance 8.5pF
Input Capacitance Grid to Cathode and Heater Capacitance 5.5pF
Output Capacitance Plate to Cathode and Heater Capacitance 1pF
Heater
Heater Voltage Heater Voltage 6.3V
Heater Current Heater Current 0.9A
6.5mA/V
Amplification Factor (μ) Amplification Factor 6—