Data set 01
1950 Sylvania
Published operating points and test conditions from this source.
SECTION 1
Rectifier
Characteristic
HeaterOrFilamentVoltage
2.5 V
HeaterOrFilamentCurrent
1.75 A
Rectifier - Half Wave ·Rectifier
879
Directly heated high-voltage half-wave rectifier, co-designated with the 2X2. Its multi-kilovolt capability and low output current suit specialized high-voltage supplies.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- 4P
- Socket code
- SMALL4
- Base pins
- 4
- Nominal heater
- 2.5 V / 1.75 A
Description
High-voltage half-wave rectifier, explicit co-designation on the 2X2/879 source.
Socket description
Small 4-contact transmitting-tube base
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- 4P
- Socket code
- SMALL4
- Base pins
- 4
- Nominal heater voltage
- 2.5 V
- Nominal heater current
- 1.75 A
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
4P - 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
- Rectifier peak inverse voltage
- 12500 V
- Rectifier nominal output current
- 7.5 mA
- Rectifier peak forward current
- 100 mA
Published promoted fields populated from Maximum Ratings / Characteristics / Typical Operation headings.
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
1960 Mazda
Published operating points and test conditions from this source.
SECTION 1
Rectifier
Other
AC anode voltage RMS maximum
2700 V
Peak inverse voltage maximum
7500 V
Average rectified current maximum
7.5 mA
Data set 03
1961 Tung Sol
Published operating points and test conditions from this source.
SECTION 1
Rectifier
Other
Peak Inverse Voltage
12500 V
HighVoltageRectifier