Data set 01
1950 Sylvania
Published operating points and test conditions from this source.
SECTION 1
Triode
Characteristic
Heater Voltage
6.3 V
Heater Current
450 mA
Application
High Fidelity Audio
Voltage Triode Pentode ·Pentode-Triode
7199
Medium-mu triode and sharp-cutoff pentode for high-fidelity audio phase splitting, tone control, and voltage amplification.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 2
- Base
- -
- Socket code
- B9A
- Base pins
- 9
- Nominal heater
- 6.3 V / 450 mA
Description
Medium-mu triode and sharp-cutoff pentode for high-fidelity audio phase splitters, tone controls, and voltage amplification.
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
- 6.3 V
- Nominal heater current
- 450 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
- Plate resistance
- 8100 Ω
- Transconductance
- 0.0021 S
- Amplification factor
- 17
- Max plate voltage
- 330 V
- Max plate dissipation
- 2.5 W
- Max cathode current
- 20 mA
Published ratings and characteristics promoted from the supplied Sylvania source.
Section 2
Pentode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 400000 Ω
- Transconductance
- 0.007 S
- Max plate voltage
- 330 V
- Max screen voltage
- 330 V
- Max plate dissipation
- 3 W
- Max screen dissipation
- 0.55 W
- Max cathode current
- 25 mA
Published ratings and characteristics promoted from the supplied Sylvania source.
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.
Data set 02
1965 Sylvania Electronic Tubes Vol3
Published operating points and test conditions from this source.
SECTION 1
Triode
Characteristics
Heater voltage
6.3 V
Heater current
450 mA
Amplification factor
17
Plate resistance
8100 ohm
Other
Heater-cathode voltage maximum heater negative
200 V
Heater-cathode voltage maximum heater positive DC
100 V
Application
Application
High-fidelity phase inverter / preamplifier
Capacitance
Triode grid-to-plate capacitance
2 pF
Triode input capacitance
2.3 pF
Triode output capacitance
0.3 pF
SECTION 2
Pentode
Capacitance
Pentode grid1-to-plate capacitance maximum
0.06 pF
Pentode input capacitance
5 pF
Pentode output capacitance
2 pF
Characteristics
Plate resistance
1 Mohm
Data set 03
1971 RCA HB3 Binder 5 of 7
Published operating points and test conditions from this source.
SECTION 1
Triode
Other
Heater voltage
6.3 V
Heater current
450 mA
Plate supply voltage
215 V
Triode
Grid voltage
-8.5 V
Triode
Plate current
9 mA
Triode
Equivalent hum/noise median
10 uV RMS
Triode
Equivalent hum/noise maximum
150 uV RMS
Triode
Characteristic
Amplification factor
17
Triode
Plate resistance
8100 ohm
Triode
Transconductance
2100 uS
Triode
Capacitance
Grid-to-plate capacitance
2 pF
Triode
SECTION 2
Pentode
Other
Plate supply voltage
220 V
Pentode
Screen supply voltage
130 V
Pentode
Cathode resistor
62 ohm
Pentode
Plate current
12.5 mA
Pentode
Screen current
3.5 mA
Pentode
Equivalent hum/noise median
35 uV RMS
Pentode
Equivalent hum/noise maximum
100 uV RMS
Pentode
Characteristic
Plate resistance
400000 ohm
Pentode
Transconductance
7000 uS
Pentode
Capacitance
Grid-to-plate capacitance
0.06 pF
Pentode
Data set 04
1975 RCA RC30
Published operating points and test conditions from this source.
SECTION 1
Triode
Other
Peak Heater-Cathode Voltage
200 V
AbsoluteValue
Average Heater-Cathode Voltage
100 V
AbsoluteValue
Capacitance
Grid to Plate Capacitance
2 pF
TriodeUnit
Grid to Cathode and Heater Capacitance
2.3 pF
TriodeUnit
Plate to Cathode and Heater Capacitance
0.3 pF
TriodeUnit
Characteristic
Plate Supply Voltage
215 V
ClassA
Plate Current
9 mA
ClassA
SECTION 2
Pentode
Capacitance
Grid No.1 to Plate Capacitance
0.06 pF
Maximum
Grid No.1 Input Capacitance
5 pF
PentodeUnit
Plate Output Capacitance
2 pF
PentodeUnit
Characteristic
Plate Supply Voltage
220 V
ClassA
Screen Supply Voltage
130 V
ClassA
Plate Current
12.5 mA
ClassA
Screen Current
3.5 mA
ClassA