Power - Pentode (NOT beam) ·Pentode
Special-quality high-slope output pentode for industrial applications, with documented Class-A and push-pull Class-AB operation. It combines professional reliability with substantial power-amplifier capability.
Special-quality high-slope output pentode intended for general industrial applications, with published Class A and push-pull Class AB operating conditions.
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
Special-quality high-slope power pentode for wide-band amplification, cathode-follower, series-regulator, and output service.
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
250 V
Pentode
Screen voltage
150 V
Pentode
Maximum peak cathode current
1.5 A
Pulsed
Plate current
85 to 115 mA
Pentode
Screen current
- to 6 mA
Pentode
Transconductance
22500 to 32500 uS
Pentode
Plate resistance
10 kOhm
Pentode
Data set 02
Published operating points and test conditions from this source.
Heater voltage
6.3 V
Chauffage: indirect par C.A. ou C.C. Vf=6.3V±5%
Heater current
1.7 A
Heizung : indirekt Burch Wechsel- If = 1.7 A
Heater voltage
6.3 V
Vf = 6.3 1 V
Heater current
1.7 mA
If = 1.7 1.62-1.78 A
Heater voltage
6.3 V
Vf = 6.3 I I V
Heater voltage
6.3 V
Vf = 6.3v±.5% Rk = 300 0
Cathode resistor
300 ohm
Vf = 6.3v±.5% Rk = 300 0
Plate supply voltage
275 V
Vba = 275 V Rgt = 47 kQ
Screen-grid supply voltage
180 V
Vbg2 = 180 V Vkf = 100 V (k pos.)
Cathode-heater voltage
100 V
Vbg2 = 180 V Vkf = 100 V (k pos.)
Grid capacitance
1 pF
Cg 1 = pF
Grid-to-plate capacitance
1 pF
Cag1 =
Plate voltage
25011 V
Va = 25011 = 275 I V
Plate current
100 mA
Ia = 100 mA Rk. = 300 Q
Plate current
100 mA
IB2 = 4 mA Ia = 100 85-1151 1 ) mA
Transconductance
27.5 mA/V
S = 27.5 mA/V I82 = 4 < 61 mA
Transconductance
27.5 mA/V
µ82g1 = 6.5 S 27.5 22.5-32.5 1) mA/V
Amplification factor
82
µ82g1 = 6.5 S 27.5 22.5-32.5 1) mA/V
Plate resistance
10 kohm
Ri = 10 kQ
Plate voltage
2501 V
Va = 2501 I V
Plate current
1 mA
= Ia 1 I I mA
Control-grid voltage
1 V
= -Vg1 1 < 30 1 V
Plate supply voltage
275 V
Vba = 275 1 I V
Cathode resistor
3001 ohm
Rk = 3001 I 0
Plate voltage
250 V
Va = 250V
Plate current
100 mA
Ia = 100 mA
Power output
11.5 W
Wo = 11.5W
Plate voltage
300 V
Va = 300 V
Screen-grid voltage
150 V
Vg2 = 150 V
Plate current
2 mA
Ia = 2x80 - 2x182 mA
Data set 03
Published operating points and test conditions from this source.
Typical Plate Voltage
250 V
PentodeConnection
Typical Screen Voltage
150 V
PentodeConnection
Typical Plate Current
100 mA
PentodeConnection
Typical Screen Current
4 mA
PentodeConnection
Data set 04
Published operating points and test conditions from this source.
Input Capacitance
35 pF
PublishedCapacitance
Output Capacitance
17 pF
PublishedCapacitance
Plate-to-Control-Grid Capacitance
<2.0 pF
PublishedCapacitance
Plate Voltage
250 V
PublishedCharacteristics
Screen Voltage
150 V
PublishedCharacteristics
Control Grid Voltage
-15.5 V
PublishedCharacteristics
Plate Current
100 mA
PublishedCharacteristics
Screen Current
4 mA
PublishedCharacteristics
Transconductance
27500 uS
PublishedCharacteristics
Screen-to-Control-Grid Mu
6.5
PublishedCharacteristics
Plate Resistance
10 kohm
PublishedCharacteristics
Plate Voltage
250 V
ClassA
Screen Voltage
150 V
ClassA
Control Grid Voltage
-15.5 V
ClassA
Load Resistance
2.7 kohm
ClassA
Input Voltage RMS
3.82 V
ClassA
ZeroSignal Plate Current
100 mA
ClassA
ZeroSignal Screen Current
4 mA
ClassA
Power Output
11.5 W
ClassA
Total Distortion
10 %
ClassA
Plate Voltage
300 V
ClassAB;PushPull
Screen Voltage
150 V
ClassAB;PushPull
Control Grid Voltage
-17 V
ClassAB;PushPull
Plate-to-Plate Load
1.6 kohm
ClassAB;PushPull
Input Voltage RMS
9 V
ClassAB;PushPull
ZeroSignal Plate Current
80 mA
ClassAB;PushPull;EachTube
MaximumSignal Plate Current
182 mA
ClassAB;PushPull;EachTube
MaximumSignal Screen Current
22 mA
ClassAB;PushPull;EachTube
Power Output
60 W
ClassAB;PushPull
Plate Supply Voltage
2000 V
AbsoluteRatings
Data set 05
Published operating points and test conditions from this source.
Heater voltage V¢
6.3 V
Heating
Heater current I¢
1.7 A
Heating
Anode current Iy
100 mA
Heating
Mutual conductance S
27.5 mA
Heating
Output power, one tube Wo
11.5 W
Heating
Heater voltage Vi
6.3 A
Characteristics
Heater current I¢
711.62 A to 1.78 A
Characteristics
Grid No.1 supply voltage +Vbg1
1 V
Life
Anode voltage Va
250 v
Characteristics
Grid No.2 voltage Vg,2
2 v
Characteristics
Grid No.1 voltage —Vgl
1 A
Characteristics
Anode current Iy
100 mA
Characteristics
Grid No.2 current Ig2
2 mA
Characteristics
Mutual conductance S
27.5 mA
Characteristics
Internal resistance R
10 kΩ
Characteristics
Anode supply voltage Vya
275 v
Characteristics
Grid No.2 supply voltage Vbg2
2 A
Characteristics
voltage Vbgl
15.7 v
Characteristics
Cathode resistor Ry
300 Ω
Characteristics
Anode current I,
85 to 115 mA
Characteristics
Grid No.2 current lg2
2 mA
Characteristics
Mutual conductance S
5122.5 to 32.5 mA
Characteristics
Anode voltage vV,
250 v
Characteristics
Grid No.2 voltage Vg2
2 v
Characteristics
Anode current Ip
1 mA
Characteristics
Negative grid No.1 voltage —Vgl max
1 v
Characteristics
cathode and heater Cgl/gSgzk_f
35 pF
Capacitances
cathode and heater Ca/g3g2kf
3 pF
Capacitances
Anode to grid No.1 Cagl max
1 pF
Capacitances