Data set 01
1961 Tung Sol
Published operating points and test conditions from this source.
SECTION 1
Beam Power
Other
Service
Horizontal deflection amplifier
Power - TV Horizontal Output (sweep) ·BeamPower
6FH6
Beam-power pentode designed for television horizontal-deflection amplifier service with high pulse-voltage and cathode-current capability.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- 6AM
- Socket code
- IO
- Base pins
- 7
- Nominal heater
- 6.3 V / 1.2 A
Description
The 6FH6 is a beam-power pentode intended for horizontal-deflection amplifier service in television receivers, with high pulse-voltage and cathode-current capability.
Socket description
International Octal
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- 6AM
- Socket code
- IO
- Base pins
- 7
- Nominal heater voltage
- 6.3 V
- Nominal heater current
- 1.2 A
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
6AM - Terminal pinout
Electrical assignments shared by every tube using this base designation.
| Terminal | Section | Connection | Evidence |
|---|---|---|---|
| PIN1Pin 1 | — | NC May be omitted on some physical base variants | Verified 6AM manufacturer basing; 12DQ6A Tung-Sol, 6BQ6GT Sylvania/Tung-Sol; bottom view |
| PIN2Pin 2 | — | H — Heater | Verified 6AM manufacturer basing; 12DQ6A Tung-Sol, 6BQ6GT Sylvania/Tung-Sol; bottom view |
| PIN3Pin 3 | — | NC | Verified 6AM manufacturer basing; 12DQ6A Tung-Sol, 6BQ6GT Sylvania/Tung-Sol; bottom view |
| PIN4Pin 4 | A | G2 — Screen Grid | Verified 6AM manufacturer basing; 12DQ6A Tung-Sol, 6BQ6GT Sylvania/Tung-Sol; bottom view |
| PIN5Pin 5 | A | G1 — Control Grid | Verified 6AM manufacturer basing; 12DQ6A Tung-Sol, 6BQ6GT Sylvania/Tung-Sol; bottom view |
| PIN7Pin 7 | — | H — Heater | Verified 6AM manufacturer basing; 12DQ6A Tung-Sol, 6BQ6GT Sylvania/Tung-Sol; bottom view |
| PIN8Pin 8 | A | BP — Beam-Forming PlateGroup AM8 | Verified 6AM manufacturer basing; 12DQ6A Tung-Sol, 6BQ6GT Sylvania/Tung-Sol; bottom view |
| PIN8Pin 8 | A | K — CathodeGroup AM8 | Verified 6AM manufacturer basing; 12DQ6A Tung-Sol, 6BQ6GT Sylvania/Tung-Sol; bottom view |
| CAP1Top cap | A | P — Plate (Anode) | Verified 6AM manufacturer basing; 12DQ6A Tung-Sol, 6BQ6GT Sylvania/Tung-Sol; bottom view |
Section ratings
1 physical section, each with unique specifications.
Section 1
Beam Power
X-ray radiationInterelectrode capacitances
- Plate resistance
- 12000 Ω
- Transconductance
- 0.006 S
- Amplification factor
- 4.3
- Max plate voltage
- 550 V
- Max screen voltage
- 220 V
- Max plate dissipation
- 17 W
- Max screen dissipation
- 3.6 W
- Max cathode current
- 155 mA
MaxPlateVoltage promoted from peak positive pulse rating; published maximum average cathode current 155 mA.
Source-dependent data
Operating conditions by source
Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.
Data set 02
1966 Tung Sol Electronic Tubes 2 of 4
Published operating points and test conditions from this source.
SECTION 1
Beam Power
Other
Maximum_peak_negative_plate_voltage
1500 V
Maximum_peak_cathode_current
500 mA
Plate_voltage
250 V
ClassA
Screen_voltage
150 V
ClassA
Grid_1_voltage
-22.5 V
ClassA
Characteristic
Plate_current
75 mA
ClassA
Screen_current
1.7 mA
ClassA
Capacitance
Grid-1-to-plate capacitance
0.4 pF
Input capacitance
23 pF
Output capacitance
9 pF