Data set 01
1950 General Electric Transmitting Types
Published operating points and test conditions from this source.
SECTION 1
Triode
Characteristic
HeaterOrFilamentVoltage
4.5 V
HeaterOrFilamentCurrent
1.1 A
Power - Triode Single (under 10W) ·Triode
PJ8
High-vacuum triode, co-designated GL-5559/PJ-8, for amplification, relay, and electronic control applications.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- B4B
- Base pins
- -
- Nominal heater
- 4.5 V / 1.1 A
Description
GL-5559/PJ-8 high-vacuum triode for amplification, relay, and control 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
- -
- Socket code
- B4B
- Base pins
- -
- Nominal heater voltage
- 4.5 V
- Nominal heater current
- 1.1 A
- 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
1 physical section, each with unique specifications.
Section 1
Triode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 8700 Ω
- Transconductance
- 0.00133 S
- Amplification factor
- 8.5
- Max plate voltage
- 350 V
- Max plate dissipation
- 10 W
- Max cathode current
- 40 mA
Ratings and characteristics promoted from the supplied General Electric source where explicitly published.
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
1968 General Electric Co
Published operating points and test conditions from this source.
SECTION 1
Triode
Characteristic
Filamentvoltage . L
1 A
Published datasheet value; semantic OCR text extraction.
Other
D-c plate voltage . 350
350 V
Published datasheet value; semantic OCR text extraction.
Plate dissipation
7.5 W
Published datasheet value; semantic OCR text extraction.
D-c plate voltage . . . . 350
350 V
Published datasheet value; semantic OCR text extraction.
D-cgrid voltage . . —
40 V
Published datasheet value; semantic OCR text extraction.
Plate dissipation
10 W
Published datasheet value; semantic OCR text extraction.
D-c plate voltage. . . 300
350 V
Published datasheet value; semantic OCR text extraction.
D-c grid voltage. . . . e e —100 —
150 V
Published datasheet value; semantic OCR text extraction.
D-c plate current. . . 30
40 mA
Published datasheet value; semantic OCR text extraction.
D-c grid current, approX. e e 2
10 mA
Published datasheet value; semantic OCR text extraction.
D-c plate voltage . . . 350
350 V
Published datasheet value; semantic OCR text extraction.
D-cgrid voltage . . —80 —
150 V
Published datasheet value; semantic OCR text extraction.
D-c plate current. . . e 35
40 mA
Published datasheet value; semantic OCR text extraction.
D-c grid current, approX. . e
10 mA
Published datasheet value; semantic OCR text extraction.