Power - TV Horizontal Output (sweep) ·Pentode
Rugged long-life power pentode for high-current service including television horizontal-deflection output, combining substantial pulse capability with special-quality construction.
The Telefunken E236L is a rugged long-life power pentode designed for high-current service and television horizontal-deflection output operation.
International Octal
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
Power pentode with horizontal-deflection pulse ratings.
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.
Plate Voltage
100 V
Screen Voltage
100 V
Plate Current
100 mA
Transconductance
14000 uS
Guaranteed Life
10000 h
Average of 100 tubes
Peak Plate Voltage
7000 V
HorizontalDeflection; PulseDuration<=18us
Data set 02
Published operating points and test conditions from this source.
Typical Plate Voltage
100 V
PentodeConnection
Typical Screen Voltage
100 V
PentodeConnection
Typical Plate Current
100 mA
PentodeConnection
Data set 03
Published operating points and test conditions from this source.
Heater voltage Vg
6.3 V
Heating
Heater current I
1.2 A
Heating
Anode current Iy
100 mA
Heating
Mutual conductance S
14 mA
Heating
Output power. Class B (2 tubes) W,
2 W
Heating
Heater voltage Vs
6.3 v
Characteristics
Heater current If
211.12 A to 1.28 A
Characteristics
cathode and heater Ixs max
20 uA
Characteristics
Anode voltage Va, max
650 V
Limiting Values
Anode peak voltage +Vap max
7 kV
Limiting Values
Anode dissipation Wy max
15 W
Limiting Values
Anode + grid No
2 W
Limiting Values
Grid No.2 voltage Vg20 max
2 V
Limiting Values
Grid No.2 dissipation Wgz max
2 W
Limiting Values
Grid No.1 peak voltage —Vglp max
1 kv
Limiting Values
Grid No.1 resistor Rgl max
1 MΩ
Limiting Values
Cathode current Ix max
220 mA
Limiting Values
Cathode peak current Ikp max
1.2 A
Limiting Values
Cathode positive Vi¢ (k pos) max
250 V
Limiting Values
Cathode negative Vit (k neg) max
200 V
Limiting Values
Heater voltage: The average heater value should be
6.3 V
Limiting Values
Variation of the heater voltage exceeding the range of
6 V
Limiting Values
Load resistance Raa ~
3 kΩ
Operating Characteristics
Anode current Ia
2 mA
Operating Characteristics
2 current Ig2
2 mA
Operating Characteristics
Maximum plate voltage
650 V
Promoted published datasheet value
Maximum screen voltage
650 V
Promoted published datasheet value
Maximum plate dissipation
15 W
Promoted published datasheet value
Maximum screen dissipation
5.5 W
Promoted published datasheet value
Anode voltage Va
100 A
Characteristics
Grid No.2 voltage Vgz
2 v
Characteristics
Cathode resistor Rk
75 Ω
Characteristics
Anode current Iy
85 to 118 mA
Characteristics
Grid No.2 current Ig2
4 to 6.5 mA
Characteristics
Mutual conductance S
11.5 to 16.5 mA
Characteristics
Internal resistance Ry
5 kΩ
Characteristics
Cut-off voltage --Vgl
35 v
Characteristics
Anode current I
0.1 mA
Characteristics
Negative grid No.l current -lg
1 uA
Characteristics
Cut-off voltage -Vgl max
120 v
Characteristics
Grid No
2 v
Characteristics
Cathode resistor Rk
85 Ω
Characteristics
Internal resistance Ry
350 Ω
Characteristics
Plate resistance
5000 Ω
Promoted published datasheet value
Transconductance
14000 µS
Promoted published datasheet value
Amplification factor
1
Promoted published datasheet value
cathode and heater Ca/gzgskf
9 to 11 pF
Capacitances
cathode and heater Cgl/gZgBkf
17.5 to 20.5 pF
Capacitances
Anode to grid No.1 Cagl max
1 pF
Capacitances