Data set 01
1960 Mazda
Published operating points and test conditions from this source.
SECTION 1
Triode
Other
Quiescent current
0.8 mA
ClassB
Application
Service
Class B positive-drive output
Power - Triode ·Triode-Triode
PD220
Low-consumption battery twin power triode designed for Class-B positive-drive audio output, providing push-pull power amplification in portable battery equipment.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 2
- Base
- -
- Socket code
- -
- Base pins
- -
- Nominal heater
- 2 V / 200 mA
Description
Low-consumption battery twin output triode for Class B positive-drive audio output.
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- -
- Base pins
- -
- Nominal heater voltage
- 2 V
- Nominal heater current
- 200 mA
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
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
X-ray radiationInterelectrode capacitances
- Transconductance
- 0.0009 S
- Max plate voltage
- 150 V
Representative row for repeated identical output-triode sections.
Section 2
Triode
X-ray radiationInterelectrode capacitances
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.