Voltage - Dual Triode (similar) ·Triode-Triode
Special-quality high-transconductance double triode with separate cathodes designed for cascode amplifier and pulse-circuit service in professional equipment.
Special-quality double triode with separate cathodes for cascode amplifier and pulse-circuit service.
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.
2 physical sections, each with unique specifications.
Section 1
Representative row for electrically identical repeated section.
Section 2
Second physical triode section; added to align rows with SectionCount.
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
150 V
EachUnit
Plate current
30 mA
EachUnit
Transconductance
18000 uS
EachUnit
Amplification factor
25
EachUnit
Plate resistance
1.4 kOhm
EachUnit
Data set 02
Published operating points and test conditions from this source.
Typical Plate Voltage
100 V
Typical Plate Current
30 mA
Noise Figure
5.7 dB
200MHz Cascode
Data set 03
Published operating points and test conditions from this source.
*Ca-g
1.8 pF
Published in approved E288CC.pdf target datasheet; Section1
Cg ' _ g ' <
0.005 pF
Published in approved E288CC.pdf target datasheet; Section1
N.F. (f =
200 MHz
Published in approved E288CC.pdf target datasheet; Section1
N.F. (f = 200Mc/s) 5.0
5.7 dB
Published in approved E288CC.pdf target datasheet; Section1
Anode current 30 28 to
32 mA
Published in approved E288CC.pdf target datasheet; Section1
Ik max
40 mA
Published in approved E288CC.pdf target datasheet; Section1
Tbulb max
190 °C
Published in approved E288CC.pdf target datasheet; Section1
gm 14
18 mA
Published in approved E288CC.pdf target datasheet; Section1
Data set 04
Published operating points and test conditions from this source.
Heater voltage V¢
6.3 V
Heating
Heater current I¢
475 mA
Heating
Anode current Iy
30 mA
Heating
Mutual conductance S
20 mA
Heating
Heater current In
1450 to 500 mA
Characteristics
Anode dissipation Wa max
3 W
Limiting Values
Grid peak voltage 'Vgp max
150 v
Limiting Values
Cathode current N max
40 mA
Limiting Values
Cathode peak current Ikp max
400 mA
Limiting Values
Voltage between cathode and heater Vit max
150 v
Limiting Values
Heater voltage: The average heater voltage should be
6.3 V
Limiting Values
Variations of the heater voltage exceeding the range of
6 V
Limiting Values
Maximum plate dissipation
3 W
Promoted published datasheet value
Anode supply voltage Vha
100 v
Characteristics
Grid supply voltage +Vbg
9 v
Characteristics
Cathode resistor Ry
350 Ω
Characteristics
Anode current I
28 to 32 mA
Characteristics
Mutual conductance S
17 to 22.5 mA
Characteristics
Internal resistance Rj
1.25 kΩ
Characteristics
Equivalent noise resistance Req
200 Ω
Characteristics
Negative grid current -lg max
200 mA
Characteristics
Anode supply voltage Vba
60 v
Characteristics
Cathode resistor Ry
80 Ω
Characteristics
Anode current Iy
1.5 mA
Characteristics
Mutual conductance S
15.5 mA
Characteristics
Internal resistance Rj
1.85 kΩ
Characteristics
Plate resistance
1250 Ω
Promoted published datasheet value
Transconductance
20000 µS
Promoted published datasheet value
Amplification factor
25
Promoted published datasheet value
Grid to cathode heater and screen Cg/kfs
4.7 pF
Capacitances
Anode to cathode heater and screen Ca/kfs
1.9 pF
Capacitances
Anode to grid Cag
1.8 pF
Capacitances
Cathode to grid heater and screen Ck/gfs
7.8 pF
Capacitances
Anode to grid heater and screen Ca/gfs
3.5 pF
Capacitances
Anode to cathode Cak
0.25 pF
Capacitances
Anode to anode other section Caa’ max
0.05 pF
Capacitances
Grid to grid other section Cgg' max
0.005 pF
Capacitances