Data set 01
1950 Sylvania
Published operating points and test conditions from this source.
SECTION 1
Triode
Other
Heater voltage series
12.6 V
Series
Heater voltage parallel
6.3 V
Parallel
Power - Triode Single (under 10W) ·Triode
8213
General-purpose triode for amplification or electronic service as documented by the manufacturer.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- B9A
- Base pins
- 9
- Nominal heater
- 12.6 V / 190 mA
Description
High-transconductance medium-mu triode with series/parallel heater capability.
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
- -
- Socket code
- B9A
- Base pins
- 9
- Nominal heater voltage
- 12.6 V
- Nominal heater current
- 190 mA
- Parallel heater voltage
- 6.3 V
- Parallel heater current
- 380 mA
- Series capable
- Yes
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
- Transconductance
- 0.023 S
- Amplification factor
- 31
- Max plate voltage
- 300 V
- Max plate dissipation
- 5 W
Published source values promoted where applicable.
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.