Data set 01
1950 General Electric Transmitting Types
Published operating points and test conditions from this source.
SECTION 1
Rectifier
Other
X-ray shielding required above
16000 V
Rectifier - Half Wave ·Rectifier
8020
High-vacuum half-wave rectifier for very-high-voltage, low-current applications. Rated for approximately 40 kV peak inverse voltage, 100 mA average output, and 1.5 A peak current.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- Medium 4-p bayonet
- Socket code
- B4B
- Base pins
- 4
- Nominal heater
- 5 V / 6.5 A
Description
High-vacuum rectifier for very-high-voltage low-current applications.
Socket description
Medium 4-pin bayonet
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- Medium 4-p bayonet
- Socket code
- B4B
- Base pins
- 4
- Nominal heater voltage
- 5 V
- Nominal heater current
- 6.5 A
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
Medium 4-p bayonet - 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
Rectifier
X-ray radiationInterelectrode capacitances
- Max plate dissipation
- 60 W
- Rectifier peak inverse voltage
- 40000 V
- Rectifier nominal output current
- 100 mA
- Rectifier peak forward current
- 1.5 A
- Rectifier forward voltage drop
- 200 V
- Rectifier warm-up time
- 5 s
Promoted maximum ratings/characteristics populated from published headings; service-specific values retained in parameters.
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
1962 Eimac
Published operating points and test conditions from this source.
SECTION 1
Rectifier
Other
The [1]
8020 mA
The 8020 has a maximum dc current rating of 100 milliamperes and a
The [2]
100 mA
The 8020 has a maximum dc current rating of 100 milliamperes and a
maximum peak inverse voltage rating of
40000 V
maximum peak inverse voltage rating of 40,000 volts. Cooling is by convec-
A single [1]
8020 V
A single 8020 will deliver 80 milliamperes at 17,000 volts to a capacitor-
A single [2]
80 V
A single 8020 will deliver 80 milliamperes at 17,000 volts to a capacitor-
A single [3]
17000 V
A single 8020 will deliver 80 milliamperes at 17,000 volts to a capacitor-
input filter with [1]
14000 V
input filter with 14,000 volts single-phase supply. Four 8020’s in a bridge
input filter with [2]
8020 V
input filter with 14,000 volts single-phase supply. Four 8020’s in a bridge
circuit will deliver [1]
200 V
circuit will deliver 200 milliamperes at 25,000 volts to a choke-input filter
circuit will deliver [2]
25000 V
circuit will deliver 200 milliamperes at 25,000 volts to a choke-input filter
Voltage
50 V
Voltage - - - - - - - - - - - 50 volts
Current
6.5 A
Current - - - - - - - - - - - 6.5 amperes
Peak Inverse Plate Voltage e T4 X [1]
0 V
Peak Inverse Plate Voltage e T4 X 00 0] volts
Peak Inverse Plate Voltage e T4 X [2]
0 V
Peak Inverse Plate Voltage e T4 X 00 0] volts
Plate Dissipation
60 W
Plate Dissipation - - . 60 watts
DC Plate Current* - - - - - - - - - - e e e e e e e o
100 mA
DC Plate Current* - - - - - - - - - - e e e e e e e o - 100 ma
Peak Plate Current - - - - - - - - - e - - - e e
1.5 A
Peak Plate Current - - - - - - - - - e - - - e e - - 1.5 ampere
Published value
1
1 Averaged over one cycle for each tube. Applies only when the rectifier is coupled to the load by a choke-input filter incorporat-
perature is “Tempilaq,” a temperature-sensitive lacquer Capacitor-Input Filter—The
8020
perature is “Tempilaq,” a temperature-sensitive lacquer Capacitor-Input Filter—The 8020 is particularly suitable for
available from the Tempil Corporation, [1]
132
available from the Tempil Corporation, 132 W. 22nd St., power-supply applications demanding high voltage at low
available from the Tempil Corporation, [2]
22
available from the Tempil Corporation, 132 W. 22nd St., power-supply applications demanding high voltage at low
New York
11
New York 11, N. Y. current. Under these conditions capacitor-input filter circuits
ELECTRICAL
8020
ELECTRICAL 8020 when no input choke is incorporated in the filter de-
the
8020
the 8020 begins to show color as the maximum plate dissipa- the peak value of current to which the tubes will be subjected
inverse voltage rating of
40000 V
inverse voltage rating of 40,000 volts should not be exceeded
in Fig
2
in Fig. 2 as a percentage of the effective load resistance per
Published value
8020
8020 MAXIMUM PERFORMANCE CAPABILITIES the internal resistance of the rectifier tube, Ry, the added
R, is the plate resistance of the
8020
R, is the plate resistance of the 8020, which may be taken
Published value
1
1 One-half the transformer secondary voltage. Tubes may be operated in parallel to increase the output
peak current usually limits the dc current which the [1]
8020
peak current usually limits the dc current which the 8020 is Fig. 2, the plate resistance (R ) will be half as great and the
peak current usually limits the dc current which the [2]
2
peak current usually limits the dc current which the 8020 is Fig. 2, the plate resistance (R ) will be half as great and the
Published value [1]
8020 V
8020 is 40,000 volts. In single-phase power-supply rectifier
Published value [2]
40000 V
8020 is 40,000 volts. In single-phase power-supply rectifier
Choke-Input Filter—The maximum dc current rating of the peak ac supply voltage ( [1]
1.41
Choke-Input Filter—The maximum dc current rating of the peak ac supply voltage (1.41 times Eppsin Fig. 2) in the
Choke-Input Filter—The maximum dc current rating of the peak ac supply voltage ( [2]
2
Choke-Input Filter—The maximum dc current rating of the peak ac supply voltage (1.41 times Eppsin Fig. 2) in the
ductance (L in Fig
1
ductance (L in Fig. 1): inverse voltage in three-phase operation depends upon the
Lo =
788
Lo =788F for full-wave single-phase rectifiers, Hiter circuits assume values of input capacitance large enough
is low, the
8020
is low, the 8020 is capable of larger dc output currents.
Published value [1]
0 mA
0 =3 Ge& for full-wave three-phase rectifiers, maximum current rating of the 8020 is 200 milliamperes.
Published value [2]
3 mA
0 =3 Ge& for full-wave three-phase rectifiers, maximum current rating of the 8020 is 200 milliamperes.
Published value [3]
8020 mA
0 =3 Ge& for full-wave three-phase rectifiers, maximum current rating of the 8020 is 200 milliamperes.
Data set 03
1965 Eimac Tube Manual
Published operating points and test conditions from this source.
SECTION 1
Rectifier
Characteristic
Filament Voltage Range
4.75 to 5.25 V
Other
Plate Seal Temperature Maximum
225 C
DC Output Current Capacitor Input
80 mA
CapacitorInputFilter
DC Output Voltage Capacitor Input
17000 V
CapacitorInputFilter
AC Supply Voltage Capacitor Input
14000 V
SinglePhase
DC Output Current Bridge Choke Input
200 mA
ChokeInputFilter
DC Output Voltage Bridge Choke Input
25000 V
ChokeInputFilter
AC Supply Voltage Bridge Choke Input
28000 V
SinglePhase
Data set 04
1971 RCA HB3 Binder 6 of 7
Published operating points and test conditions from this source.
SECTION 1
Rectifier
Characteristic
Heater/filament voltage nominal
5 V
WholeTube
Heater/filament current nominal
6 A
WholeTube
Anode to Filament
1.4
Published source row
Published electrical value
9215 V
Published source row
Published electrical value (value 2)
9 V
Published source row
Verified Rectifier forward voltage drop
200 V
Verified from supplied datasheet rating/characteristic table
Other
Voltage
5 V
Published source row
Current
5 A
Published source row
Current (value 2)
5 A
Published source row
Current (value 3)
6.5 A
Published source row
PEAK INVERSE ANODE VOLTAGE l,A0
0 mA
Published source row
AVERAGE ANODE CURRENT
100 mA
Published source row
FILAiIFI~IT VOLTAGE
5.8 V
Published source row
PEAK FOR`r7ARD ANODE VOLTAGE
12500 V
Published source row
AVERAGE ANODE DISSIPATION
75
Published source row
Filament Voltage
5 V
Published source row
Filament Voltage (value 2)
-5 V
Published source row
Peak Forward Anode Voltage
10000 V
Published source row
Minimum Peak Anode Current
2 A
Published source row
Peak inverse plate voltage
0 V
Promoted field corroboration
Rectifier average current
100 mA
Promoted field corroboration
Rectifier peak forward current
2 mA
Promoted field corroboration
Verified Peak inverse plate voltage
14000 V
Verified from supplied datasheet rating/characteristic table
Verified Rectifier average output current
100 mA
Verified from supplied datasheet rating/characteristic table
Verified Rectifier peak forward current
750 mA
Verified from supplied datasheet rating/characteristic table
Data set 05
1975 Eimac Tube Manual
Published operating points and test conditions from this source.
SECTION 1
Rectifier
Characteristic
Filament Voltage Range
4.75 to 5.25 V
Other
Plate Seal Temperature Maximum
225 C
DC Output Current Capacitor Input
80 mA
CapacitorInputFilter;SingleTube
DC Output Voltage Capacitor Input
17000 V
CapacitorInputFilter;SingleTube
AC Supply Voltage Capacitor Input
14000 V
CapacitorInputFilter;SinglePhase
DC Output Current Bridge Choke Input
200 mA
ChokeInputFilter;Bridge
DC Output Voltage Bridge Choke Input
25000 V
ChokeInputFilter;Bridge
AC Supply Voltage Bridge Choke Input
28000 V
ChokeInputFilter;SinglePhase
Data set 06
1976 Eimac Tube Manual
Published operating points and test conditions from this source.
SECTION 1
Rectifier
Characteristic
Filament Voltage Range
4.75 to 5.25 V
Other
Plate Seal Temperature Maximum
225 C
DC Output Current Capacitor Input
80 mA
CapacitorInputFilter;SingleTube
DC Output Voltage Capacitor Input
17000 V
CapacitorInputFilter;SingleTube
AC Supply Voltage Capacitor Input
14000 V
CapacitorInputFilter;SinglePhase
DC Output Current Bridge Choke Input
200 mA
ChokeInputFilter;Bridge
DC Output Voltage Bridge Choke Input
25000 V
ChokeInputFilter;Bridge
AC Supply Voltage Bridge Choke Input
28000 V
ChokeInputFilter;SinglePhase
Data set 07
1999 Philips 0-D
Published operating points and test conditions from this source.
SECTION 1
Rectifier
Other
Surge limiter operating filament voltage
5.5 V
Published datasheet value
Surge limiter operating anode voltage
10 kV
Published datasheet value
Surge limiter minimum peak anode current
2 A to -
Published datasheet value
Maximum surge-limiter anode voltage
- to 12.5 kV
Published datasheet value
Maximum peak inverse voltage
- to 40 kV
Published datasheet value
Maximum anode dissipation
- to 75 W
Published datasheet value
Maximum rectifier peak anode current
- to 750 mA
Published datasheet value
Maximum average rectifier current
- to 100 mA
Published datasheet value
Characteristics
Anode-filament capacitance
1.4 pF
Published datasheet value