Data set 01
1947 Standard Valves
Published operating points and test conditions from this source.
SECTION 1
Triode
Capacitance
Grid-anode capacitance
7.5 pF
Grid-cathode/filament capacitance
10.3 pF
Anode-cathode/filament capacitance
4.8 pF
Power - Triode ·Triode
3BI00B
Indirectly heated power triode designed for audio-frequency output service. Its moderate amplification factor, approximately 10 W plate dissipation, and low plate-voltage rating provide loudspeaker-driving power from a heater-cathode construction rather than a directly heated filament.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- B5
- Base pins
- 5
- Nominal heater
- 4 V / 1.1 A
Description
Indirectly heated triode for audio-frequency power service.
Socket description
European 5-pin base
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- B5
- Base pins
- 5
- Nominal heater voltage
- 4 V
- Nominal heater current
- 1.1 A
- 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
1 physical section, each with unique specifications.
Section 1
Triode
X-ray radiationInterelectrode capacitances
- Amplification factor
- 10
- Max plate voltage
- 200 V
- Max plate dissipation
- 10 W
- Max cathode current
- 50 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.