Data set 01
1999 Philips 0-D
Published operating points and test conditions from this source.
SECTION 1
Triode
Characteristic
Saturation current
10 mA
Voltage - Triode (single) ·Triode
A406
Directly heated receiving triode intended especially for low-frequency amplification and capable of driving a small loudspeaker.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- A32
- Socket code
- B4
- Base pins
- 4
- Nominal heater
- 3.7 V / 60 mA
Description
Directly heated receiving triode intended especially for low-frequency amplification and capable of driving a small loudspeaker.
Socket description
European 4-pin base
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- A32
- Socket code
- B4
- Base pins
- 4
- Nominal heater voltage
- 3.7 V
- Nominal heater current
- 60 mA
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
A32 - Terminal pinout
Electrical assignments shared by every tube using this base designation.
No verified pinout is recorded for this base designation.
Section ratings
1 physical section, each with unique specifications.
Section 1
Triode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 13000 Ω
- Transconductance
- 0.00045 S
- Amplification factor
- 6
- Max plate voltage
- 100 V
Directly heated receiving triode intended especially for low-frequency amplification and capable of driving a small loudspeaker.
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.