Data set 01
1955 Lorenz
Published operating points and test conditions from this source.
SECTION 1
Pentode
Construction
Long-life construction
TRUE
Ruggedized construction
TRUE
Power - Pentode (NOT beam) ·Pentode
E84L
Special-quality long-life power/output pentode designed for stable professional, industrial, or wideband amplifier service.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- Noval
- Socket code
- B9A
- Base pins
- 9
- Nominal heater
- 6.3 V / 760 mA
Description
The Telefunken E84L is a rugged long-life output pentode with high transconductance, explicitly paired as E84L/7320.
Socket description
Small-button Noval 9-contact
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- Noval
- Socket code
- B9A
- Base pins
- 9
- Nominal heater voltage
- 6.3 V
- Nominal heater current
- 760 mA
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
Noval - 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
Pentode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 40000 Ω
- Transconductance
- 0.0113 S
- Amplification factor
- 19
- Max plate voltage
- 450 V
- Max screen voltage
- 450 V
- Max plate dissipation
- 13.5 W
- Max screen dissipation
- 4.4 W
- Max grid dissipation
- 0.5 W
- Max cathode current
- 75 mA
Audio/power output pentode.
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
1959 Telefunken
Published operating points and test conditions from this source.
SECTION 1
Pentode
Characteristics
Plate Voltage
250 V
Screen Voltage
250 V
Plate Current
48 mA
Screen Current
5.5 mA
Transconductance
11300 uS
Plate Resistance
40000 ohm
Guaranteed Life
10000 h
Average of 100 tubes
Heater Cycling
2000 cycles
Minimum
Data set 03
1963 Siemens
Published operating points and test conditions from this source.
SECTION 1
Pentode
Characteristics
Input capacitance
10 pF
Output capacitance
6 pF
Grid-to-plate capacitance
0.5 pF
Maximum
Triode-connected transconductance
10.2 mA/V
TriodeConnection
Triode-connected amplification factor
18.5
TriodeConnection
Triode-connected plate resistance
1.8 kOhm
TriodeConnection
Data set 04
1999 Philips E-Z
Published operating points and test conditions from this source.
SECTION 1
Pentode
Characteristic
Life test
10000 h
Published datasheet value
Heater voltage Vf
6.3 V
Published datasheet value
Heater current If
760 mA
Published datasheet value
Anode current Iy
48 mA
Published datasheet value
Mutual conductance S
11.3 mA/V
Published datasheet value
Output power, one tube Wo
6 W
Published datasheet value
Heater current It
800 mA
Published datasheet value
Cathode resistor Rk
135 Q
Published datasheet value
Grid No
7 mA
Published datasheet value
Cathode resistor Rk
270 Q
Published datasheet value
Anode current Ia
34 mA
Published datasheet value
Mutual conductance S
10.2 mA/V
Published datasheet value
and heater Vig =
100 V
Published datasheet value
electrodes R min
100 MQ
Published datasheet value
The tube is subjected during
32 h
Published datasheet value
during
10000 h
Published datasheet value
Anode voltage Va, max,
600 V
Published datasheet value
Va max
450 V
Published datasheet value
Anode dissipation Wy max
13.5 W
Published datasheet value
Grid No
600 V
Published datasheet value
Vg2 max
450 V
Published datasheet value
Continuously Wg2 max
2.2 W
Published datasheet value
by speech and music Wg2p max
4.4 W
Published datasheet value
Grid No
0.5 W
Published datasheet value
Grid No
100 V
Published datasheet value
Cathode current Ik max
75 mA
Published datasheet value
Heater voltage: The average heater voltage should be
6.3 V
Published datasheet value
Variations of the heater voltage exceeding the range of
6 V
Published datasheet value
Vg,
250 V
Published datasheet value
Load resistance Ra~
4.5 kQ
Published datasheet value
Anode current Ia
50.5 mA
Published datasheet value
Grid No
11 mA
Published datasheet value
Output power Wo
6 W
Published datasheet value
Anode voltage Va
250 V
Published datasheet value
Cathode resistance Rk
135 Q
Published datasheet value
Anode current Ia
49.2 mA
Published datasheet value
Grid No
11.6 mA
Published datasheet value
Cathode resistance Rk
210 Q
Published datasheet value
Load resistance Ran~
7 kQ
Published datasheet value
Anode current Iy
36 mA
Published datasheet value
Grid No
14.6 mA
Published datasheet value
Output power Wo
5.6 W
Published datasheet value
Grid No
210 V
Published datasheet value
Cathode resistor Ry
160 Q
Published datasheet value
Input voltage Vi
3.8 h
Published datasheet value
Anode current Ia
36.5 mA
Published datasheet value
Grid No
8 mA
Published datasheet value
Output power Wy
4.7 W
Published datasheet value
Cathode resistor Ry
130 Q
Published datasheet value
Input voltage Vi
109 V
Published datasheet value
Anode current Iy
6 mA
Published datasheet value
Grid No
1 mA
Published datasheet value
Output power Wo
17 W
Published datasheet value
Grid No
300 V
Published datasheet value
Grid No
14.7 V
Published datasheet value
Load resistance Raa
8 kQ
Published datasheet value
Cathode resistor Rg
270 Q
Published datasheet value
Output power W,
1.95 W
Published datasheet value
Cathode resistor Ry
270 Q
Published datasheet value
Load resistance Raa o
10 kQ
Published datasheet value
Cutput power Wo
5.2 W
Published datasheet value
SEEEEEE d—
4 V
Published datasheet value
I, . Vga =
250 V
Published datasheet value