Data set 01
1951 Mullard Valve and Service Manual
Published operating points and test conditions from this source.
SECTION 1
Diode
Other
Maximum Anode Voltage
150 V
EachSection
Maximum Anode Current
9 mA
EachSection
Diode (NOT rectifier) ·Diode-Diode
UB41
Series-heater double diode with separate cathodes designed for detector and rectifier applications in receiving equipment.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 2
- Base
- -
- Socket code
- B8A
- Base pins
- 8
- Nominal heater
- 19 V / 100 mA
Description
Double diode with separate cathodes for detector and rectifier applications in series-heater equipment.
Socket description
Rimlock 8-contact
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- B8A
- Base pins
- 8
- Nominal heater voltage
- 19 V
- Nominal heater current
- 100 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
Diode
X-ray radiationInterelectrode capacitances
- Max plate voltage
- 150 V
- Max cathode current
- 9 mA
- Rectifier peak inverse voltage
- 420 V
- Rectifier nominal output current
- 9 mA
- Rectifier peak forward current
- 54 mA
One row represents two electrically identical diode systems with separate cathodes.
Section 2
Diode
X-ray radiationInterelectrode capacitances
No fixed ratings are recorded for this section.
Second physical diode section added in approved reconciliation.
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
1963 Philips Electron Tubes Handbook V1
Published operating points and test conditions from this source.
SECTION 1
Diode
Capacitance
Diode capacitance
3.6 pF
Other
Maximum inverse voltage
420 V
Maximum average diode current
9 mA
Maximum peak diode current
54 mA
Data set 03
1999 Philips E-Z
Published operating points and test conditions from this source.
SECTION 1
Diode
Other
Maximum inverse voltage
420 V
EachDiode
Maximum diode current
9 mA
EachDiode
Characteristic
Diode capacitance
3.6 pF
EachDiode