Data set 01
1960 Mazda
Published operating points and test conditions from this source.
SECTION 1
Triode
Other
Maximum total anode dissipation
2.5 W
Maximum heater-cathode voltage
150 V
RMS
Voltage - Dual Triode (similar) ·Triode-Triode
630L2
General-purpose medium-mu dual triode with identical sections for television-receiver circuitry, using a 6.3 V heater and providing moderate transconductance and gain.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 2
- Base
- -
- Socket code
- B9A
- Base pins
- 9
- Nominal heater
- 6.3 V / 300 mA
Description
General-purpose dual triode with identical sections for television receiver circuits.
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
- 300 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
- 0.0034 S
- Amplification factor
- 18
- Max plate voltage
- 250 V
- Max plate dissipation
- 2 W
Representative row for repeated identical sections.
Section 2
Triode
X-ray radiationInterelectrode capacitances
- Transconductance
- 0.0034 S
- Amplification factor
- 18
- Max plate voltage
- 250 V
- Max plate dissipation
- 2 W
Second identical physical triode section; added to align rows with SectionCount.
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
1973 Mazda Valves Binder 2
Published operating points and test conditions from this source.
SECTION 1
Triode
Other
HeaterVoltageNominal
6.3 V
Nominal
HeaterCurrentNominal
300 mA
Nominal
Maximum Plate Voltage
250 V
Maximum Plate Dissipation
2 W
Characteristic
Transconductance
3400 µS
Typical
Amplification Factor
18
Typical