Voltage Triode Pentode ·Pentode-Triode
6HD7
The 6HD7 is a miniature triode-pentode developed for television VHF oscillator and mixer applications. It combines a medium-mu triode oscillator with a sharp-cutoff pentode mixer in a single nine-pin envelope, operating from a 6.3-volt, 450-milliampere heater supply.
- Sections
- 2
- Base
- B9A
- Socket code
- B9A
- Base pins
- 9
- Nominal heater
- 6.3 V / 450 mA
Socket description
Small-button Noval 9-contact
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- B9A
- Socket code
- B9A
- Base pins
- 9
- Nominal heater voltage
- 6.3 V
- Nominal heater current
- 450 mA
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
B9A - Terminal pinout
Electrical assignments shared by every tube using this base designation.
No verified pinout is recorded for this base designation.
Section ratings
2 physical sections, each with unique specifications.
Section 1
Triode
No fixed ratings are recorded for this section.
Section 2
Pentode
No fixed ratings are recorded for this section.
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.