Power - Pentode (NOT beam) ·Pentode
EL84-family high-slope Marconi audio power pentode for compact receiver and amplifier output stages.
Miniature output pentode with equipotential cathode for low-frequency power amplification in HI-FI audio output stages; co-designated EL84.
Small-button Noval 9-contact
General specifications
Properties common to every published source and operating point.
Electrical assignments shared by every tube using this base designation.
No verified pinout is recorded for this base designation.
1 physical section, each with unique specifications.
Section 1
Published ratings and characteristics promoted from the approved source.
Source-dependent data
Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.
Data set 01
Published operating points and test conditions from this source.
Heater voltage
6.3 V
Heater current
760 mA
Maximum plate voltage
300 V
Maximum screen voltage
300 V
Maximum plate dissipation
12 W
Maximum screen dissipation
2 W
Typical Class-A plate voltage
250 V
ClassA
Transconductance
11300 uS
Plate resistance
3800 ohm
Primary application
High-slope output pentode for AC receiver and amplifier output stages.
Data set 02
Published operating points and test conditions from this source.
Plate Current
40 to 54 mA
Plate 250 V; screen 250 V; grid -6.6 V
Power Output
3 W
Plate 250 V; screen 250 V; load 5.2 kohm; ClassA;OneTube