Data set 01
1961 Tung Sol
Published operating points and test conditions from this source.
SECTION 1
Rectifier
Other
PeakInverseVoltageDCComponent
24000 V
FlybackRectifier
Rectifier - TV Line Scan Boost ·Rectifier
1K3
High-voltage television flyback/EHT rectifier designed to convert horizontal-output transformer pulses into the DC accelerating supply required by the CRT.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- 3C
- Socket code
- IO
- Base pins
- 6
- Nominal heater
- 1.25 V / 200 mA
Description
1K3 is a Rectifier device. High-voltage diode/half-wave rectifier for television flyback or other high-voltage service.
Socket description
International Octal
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- 3C
- Socket code
- IO
- Base pins
- 6
- Nominal heater voltage
- 1.25 V
- Nominal heater current
- 200 mA
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
3C - Terminal pinout
Electrical assignments shared by every tube using this base designation.
| Terminal | Section | Connection | Evidence |
|---|---|---|---|
| PIN1Pin 1 | — | IC Transcribed directly from EIA chart; independent cross-check not yet performed. | Unverified EIA Base Connections chart, page 127 (uploaded BaseCodeDataCharts_OCR), base 3C |
| PIN2Pin 2 | — | F — Filament Transcribed directly from EIA chart; independent cross-check not yet performed. | Unverified EIA Base Connections chart, page 127 (uploaded BaseCodeDataCharts_OCR), base 3C |
| PIN3Pin 3 | — | IC Transcribed directly from EIA chart; independent cross-check not yet performed. | Unverified EIA Base Connections chart, page 127 (uploaded BaseCodeDataCharts_OCR), base 3C |
| PIN5Pin 5 | — | IC Transcribed directly from EIA chart; independent cross-check not yet performed. | Unverified EIA Base Connections chart, page 127 (uploaded BaseCodeDataCharts_OCR), base 3C |
| PIN7Pin 7 | — | F — Filament Transcribed directly from EIA chart; independent cross-check not yet performed. | Unverified EIA Base Connections chart, page 127 (uploaded BaseCodeDataCharts_OCR), base 3C |
| PIN8Pin 8 | — | IC Transcribed directly from EIA chart; independent cross-check not yet performed. | Unverified EIA Base Connections chart, page 127 (uploaded BaseCodeDataCharts_OCR), base 3C |
| CAP1Top cap | A | P — Plate (Anode) Transcribed directly from EIA chart; independent cross-check not yet performed. | Unverified EIA Base Connections chart, page 127 (uploaded BaseCodeDataCharts_OCR), base 3C |
Section ratings
1 physical section, each with unique specifications.
Section 1
Rectifier
X-ray radiationInterelectrode capacitances
- Rectifier peak inverse voltage
- 26000 V
- Rectifier nominal output current
- 0.5 mA
- Rectifier peak forward current
- 50 mA
- Rectifier forward voltage drop
- 225 V
Flyback rectifier; source calls 1K3 a direct replacement for 1J3, which is not treated as an alias.
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 Westinghouse Data Book
Published operating points and test conditions from this source.
SECTION 1
Rectifier
Characteristics
Filament Voltage
1.25 V
Filament Current
200 mA
Plate-to-Filament Capacitance
1.6 pF
Tube Voltage Drop
225 V
PlateCurrent=7mA
Other
Peak Inverse Plate Voltage
26000 V
Flyback
Steady-State Peak Plate Current
50 mA
DC Output Current
0.5 mA
Data set 03
1966 Tung Sol Electronic Tubes 1 of 4
Published operating points and test conditions from this source.
SECTION 1
Rectifier
Other
Filament/heater voltage
1.25 V
Filament/heater current
200 mA
Maximum total DC-plus-peak inverse voltage
- to 26000 V
FlybackRectifier
Maximum steady-state peak plate current
50 mA
FlybackRectifier
Maximum DC output current
0.5 mA
FlybackRectifier
Capacitance
Plate-to-filament/heater capacitance
1.6 pF
Approximate
Data set 04
1968 General Electric Co
Published operating points and test conditions from this source.
SECTION 1
Rectifier
Other
Peak inverse plate voltage DC component
22000 V
FlybackRectifier
Peak inverse plate voltage total DC and peak
26000 V
FlybackRectifier
Steady state peak plate current
50 mA
FlybackRectifier
DC output current
0.5 mA
FlybackRectifier
Characteristic
Tube voltage drop
225 V
Ib=7mA
Capacitance
Interelectrode capacitance
1.3 pF