Data set 01
1951 Mullard Valve and Service Manual
Published operating points and test conditions from this source.
SECTION 1
Diode
Characteristic
Heater Voltage
6.3 V
Heater Current
225 mA
Voltage - Triode (with diode, heptode or hexode) ·Diode-Diode-Triode
EBC41
Double-diode high-mu triode for receiver detection, automatic-volume-control generation, and audio voltage amplification. Paired diodes handle detector and control duties while the triode supplies subsequent gain.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 3
- Base
- RIMLOCK
- Socket code
- B9A
- Base pins
- -
- Nominal heater
- 6.3 V / 230 mA
Description
Dual-diode triode for detection and low-frequency 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
- RIMLOCK
- Socket code
- B9A
- Base pins
- -
- Nominal heater voltage
- 6.3 V
- Nominal heater current
- 230 mA
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
RIMLOCK - Terminal pinout
Electrical assignments shared by every tube using this base designation.
No verified pinout is recorded for this base designation.
Section ratings
3 physical sections, each with unique specifications.
Section 1
Diode
X-ray radiationInterelectrode capacitances
- Rectifier peak inverse voltage
- 350 V
- Rectifier nominal output current
- 0.8 mA
- Rectifier peak forward current
- 5 mA
Promoted from clearly identified published ratings/characteristics; additional operating points, capacitances, detector data, microwave data, and special-quality limits are retained in TUBE_SECTION_PARAMETER.
Section 2
Diode
X-ray radiationInterelectrode capacitances
No fixed ratings are recorded for this section.
Promoted from clearly identified published ratings/characteristics; additional operating points, capacitances, detector data, microwave data, and special-quality limits are retained in TUBE_SECTION_PARAMETER.
Section 3
Triode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 58000 Ω
- Transconductance
- 0.0012 S
- Amplification factor
- 70
- Max plate voltage
- 300 V
- Max plate dissipation
- 0.5 W
- Max cathode current
- 5 mA
Promoted from clearly identified published ratings/characteristics; additional operating points, capacitances, detector data, microwave data, and special-quality limits are retained in TUBE_SECTION_PARAMETER.
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
1958 Brimar Radio Valve No 7
Published operating points and test conditions from this source.
SECTION 1
Diode
Application
Application
Signal detection
SECTION 3
Triode
Application
Application
AF amplifier
Data set 03
1963 Philips Electron Tubes Handbook V1a
Published operating points and test conditions from this source.
SECTION 1
Diode
Capacitance
Diode capacitance
0.8 pF
Diode1
SECTION 2
Diode
Capacitance
Diode capacitance
0.7 pF
Diode2
SECTION 3
Triode
Other
Plate voltage
250 V
AudioAmplifier
Control-grid voltage
-3 V
AudioAmplifier
Plate current
1 mA
AudioAmplifier
Characteristic
Transconductance
1200 µS
Section1
Amplification factor
70
Section1
Plate resistance
58000 Ω
Section1
Capacitance
Grid capacitance
2.5 pF
Section1
Plate capacitance
1.7 pF
Section1
Grid-to-plate capacitance
1.5 pF
Section1
Data set 04
1967 Mullard Receiving Tubes for Maintenance
Published operating points and test conditions from this source.
SECTION 1
Diode
Capacitance
Ca d-gt <
0.007 pF
Published in approved EBC41.pdf target datasheet; Section2
Calf d -gt <
0.03 pF
Published in approved EBC41.pdf target datasheet; Section2
Ca d - a t <
0.01 pF
Published in approved EBC41.pdf target datasheet; Section2
e j! -k
2.75 pF
Published in approved EBC41.pdf target datasheet; Section2
Ca - k
1.5 pF
Published in approved EBC41.pdf target datasheet; Section2
Ca - g
1.3 pF
Published in approved EBC41.pdf target datasheet; Section2
Cg -h <
0.05 pF
Published in approved EBC41.pdf target datasheet; Section2
Ca I d -k
0.8 pF
Published in approved EBC41.pdf target datasheet; Section2
<
0.3 pF
Published in approved EBC41.pdf target datasheet; Section2
Ca d - h <
0.1 pF
Published in approved EBC41.pdf target datasheet; Section2
Other
<
0.05 pF
Published in approved EBC41.pdf target datasheet; Section2
SECTION 3
Triode
Capacitance
Ca d-gt <
0.007 pF
Published in approved EBC41.pdf target datasheet; Section1
Calf d -gt <
0.03 pF
Published in approved EBC41.pdf target datasheet; Section1
Ca d - a t <
0.01 pF
Published in approved EBC41.pdf target datasheet; Section1
e j! -k
2.75 pF
Published in approved EBC41.pdf target datasheet; Section1
Ca - k
1.5 pF
Published in approved EBC41.pdf target datasheet; Section1
Ca - g
1.3 pF
Published in approved EBC41.pdf target datasheet; Section1
Cg -h <
0.05 pF
Published in approved EBC41.pdf target datasheet; Section1
Ca I d -k
0.8 pF
Published in approved EBC41.pdf target datasheet; Section1
<
0.3 pF
Published in approved EBC41.pdf target datasheet; Section1
Ca d - h <
0.1 pF
Published in approved EBC41.pdf target datasheet; Section1
Other
<
0.05 pF
Published in approved EBC41.pdf target datasheet; Section1
Data set 05
1968 Mazda Belvu
Published operating points and test conditions from this source.
SECTION 1
Diode
Application
Application
Detector text
SECTION 3
Triode
Application
Application
AFVoltageAmplifier text
Data set 06
1999 Philips E-Z
Published operating points and test conditions from this source.
SECTION 1
Diode
Other
Maximum diode current
0.8 mA
Maximum diode inverse peak voltage
350 V
Maximum diode peak current
5 mA
SECTION 3
Triode
Characteristics
Heater voltage
6.3 V
Heater current
230 mA
Typical plate voltage
250 V
Transconductance
1200 uS
Amplification factor
70
Plate resistance
58000 ohm
Other
Maximum plate voltage
300 V
Maximum plate dissipation
0.5 W