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7150

Frame-grid broadband tetrode amplifier covering audio through approximately 300 MHz, also usable as an output stage or low-noise triode-connected input amplifier.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: B9A
Base pins: 9
Nominal heater: 6.3 V / 450 mA

Description

Frame-grid broadband tetrode amplifier for audio through about 300 MHz; also useful as an output stage and low-noise triode-connected input stage.

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: -
Socket code: B9A
Base pins: 9
Nominal heater voltage: 6.3 V
Nominal heater current: 450 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

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

Tetrode

X-ray radiationInterelectrode capacitances

Plate resistance: 30000 Ω
Transconductance: 0.0358 S
Amplification factor: 35
Max plate voltage: 165 V
Max screen voltage: 165 V
Max plate dissipation: 4.5 W
Max screen dissipation: 1.65 W
Max cathode current: 55 mA

Published ratings and characteristics audited; additional numerical data retained in TUBE_SECTION_PARAMETER.

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 01

1960 Ericsson

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Other

Thanks to pentode-like characteristics
7150
Thanks to pentode-like characteristics 7150 is very useful in output
The
7150
The 7150 also offers small transit time loading and low cathode lead
Published value [1]
1
1. Plate 6 Cathode
Published value [2]
6
1. Plate 6 Cathode
Published value [1]
2
2. Heater 7. Cathode
Published value [2]
7
2. Heater 7. Cathode
Published value [1]
3
3. Cathode 8. No Connection
Published value [2]
8
3. Cathode 8. No Connection
Published value [1]
4
4. Grid No 1 9 Grid No 2
Published value [2]
1
4. Grid No 1 9 Grid No 2
Published value [3]
9
4. Grid No 1 9 Grid No 2
Published value [4]
2
4. Grid No 1 9 Grid No 2
Published value [1]
5
5. Heater & Int. Shield (see Note 1)
Published value [2]
1
5. Heater & Int. Shield (see Note 1)
APRIL
1960
APRIL 1960 shield when the latter is positive in relation to the cathode.
Plate Voltage
165 V
Plate Voltage . . . . . . . . . . . . . 165 volts
Plate Dissipation e e e e e e e e e
4.5 W
Plate Dissipation e e e e e e e e e 4.5 watts
Grid No [1]
2 V
Grid No 2 Voltage . . . . . . . . . . . 165 volts
Grid No [2]
165 V
Grid No 2 Voltage . . . . . . . . . . . 165 volts
Grid No [1]
2 W
Grid No 2 Dissipation . ot e 1.65 watts *
Grid No [2]
1.65 W
Grid No 2 Dissipation . ot e 1.65 watts *
(Plate + Grid No [1]
2
(Plate + Grid No 2} D1531pat10n e e 5.5 watts
(Plate + Grid No [2]
531
(Plate + Grid No 2} D1531pat10n e e 5.5 watts
(Plate + Grid No [3]
0
(Plate + Grid No 2} D1531pat10n e e 5.5 watts
(Plate + Grid No [4]
5.5
(Plate + Grid No 2} D1531pat10n e e 5.5 watts
Cathode Current . . e e e e
55 mA
Cathode Current . . e e e e 55 milliamps
Heater - Cathode Voltage . .o
55 V
Heater - Cathode Voltage . .o 55 golts
Bulb Temperature (at hottest pomt}
140
Bulb Temperature (at hottest pomt} .. 140 C
Grid No [1]
1 V
Grid No 1 Voltage, Positive Value . . . . 0 volt
Grid No [2]
0 V
Grid No 1 Voltage, Positive Value . . . . 0 volt
Grid No [1]
1 V
Grid No 1 Voltage, Negative Value . . . . -25 volts
Grid No [2]
-25 V
Grid No 1 Voltage, Negative Value . . . . -25 volts
Grid Circuit Resistance, Fixed Bias [1]
0 Mohm
Grid Circuit Resistance, Fixed Bias . . . 0. 05 megohm
Grid Circuit Resistance, Fixed Bias [2]
5 Mohm
Grid Circuit Resistance, Fixed Bias . . . 0. 05 megohm
Grid Circuit Resistance, Cathode Bias
0.1 Mohm
Grid Circuit Resistance, Cathode Bias . . 0.10 megohm
Grid Nol toPlate
0.03
Grid Nol toPlate . . . . . . . . . . . 0.03 uuF
Heater Voltage [1]
6.3 V
Heater Voltage . . . . . . . . . . 6.3 6.3 volts
Heater Voltage [2]
6.3 V
Heater Voltage . . . . . . . . . . 6.3 6.3 volts
Heater Current e e e e e e [1]
450 mA
Heater Current e e e e e e 450 450 milliamps
Heater Current e e e e e e [2]
450 mA
Heater Current e e e e e e 450 450 milliamps
Plate Supply Voltage. e e [1]
135 V
Plate Supply Voltage. e e 135 125 volts
Plate Supply Voltage. e e [2]
125 V
Plate Supply Voltage. e e 135 125 volts
Grid No [1]
2 V
Grid No 2 Supply Voltage . . 135 125 volts
Grid No [2]
135 V
Grid No 2 Supply Voltage . . 135 125 volts
Grid No [3]
125 V
Grid No 2 Supply Voltage . . 135 125 volts
Grid No [1]
1 V
Grid No 1 Supply Voltage (aee Note2) + 8 0 volts
Grid No [2]
8 V
Grid No 1 Supply Voltage (aee Note2) + 8 0 volts
Grid No [3]
0 V
Grid No 1 Supply Voltage (aee Note2) + 8 0 volts
Cathode Bias Resistor [1]
260 ohm
Cathode Bias Resistor . . . . 260 45 ohms
Cathode Bias Resistor [2]
45 ohm
Cathode Bias Resistor . . . . 260 45 ohms
Plate Current [1]
27.5 mA
Plate Current . . . . . . . . . . 27.5 24 milliamps
Plate Current [2]
24 mA
Plate Current . . . . . . . . . . 27.5 24 milliamps
Grid No [1]
2 mA
Grid No 2 Current . . . . . . . . 8.5 7.5 milliamps
Grid No [2]
8.5 mA
Grid No 2 Current . . . . . . . . 8.5 7.5 milliamps
Grid No [3]
7.5 mA
Grid No 2 Current . . . . . . . . 8.5 7.5 milliamps
Transconductance . e e [1]
35800 uS
Transconductance . e e 35,800 34,000 micromhos
Transconductance . e e [2]
34000 uS
Transconductance . e e 35,800 34,000 micromhos
Plate Resistance, approx [1]
0.03 Mohm
Plate Resistance, approx. . . . . . 0.03 0.03 megohm
Plate Resistance, approx [2]
0.03 Mohm
Plate Resistance, approx. . . . . . 0.03 0.03 megohm
Equivalent Noise Resistance [1]
160 ohm
Equivalent Noise Resistance . . . . 160 160 ohms
Equivalent Noise Resistance [2]
160 ohm
Equivalent Noise Resistance . . . . 160 160 ohms
Input Conductance at [1]
100 uS
Input Conductance at 100 Mc, appr. . 2200 2200 micromhos
Input Conductance at [2]
2200 uS
Input Conductance at 100 Mc, appr. . 2200 2200 micromhos
Input Conductance at [3]
2200 uS
Input Conductance at 100 Mc, appr. . 2200 2200 micromhos
Transit Time Loading at [1]
100
Transit Time Loading at 100 Mc, appr. 200 200 micromhos
Transit Time Loading at [2]
200
Transit Time Loading at 100 Mc, appr. 200 200 micromhos
Transit Time Loading at [3]
200
Transit Time Loading at 100 Mc, appr. 200 200 micromhos
Triode Connection = Grid No
2
Triode Connection = Grid No 2 connected to Plate.
Note
2
Note 2: It is recommended to use the tube in combination bias as per PRINTED
Heater Voltage . . e e e
6.3 V
Heater Voltage . . e e e 6.3 volts
Plate Supply Voltage e e e e
125 V
Plate Supply Voltage e e e e 125 volts
Grid No [1]
2 V
Grid No 2 Supply Voltage. . . . . 125 volts
Grid No [2]
125 V
Grid No 2 Supply Voltage. . . . . 125 volts

Data set 02

1965 Ericsson Longlife

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Capacitance

Grid-to-plate capacitance
0.03 pF
ColdTube
Input capacitance
16 pF
ColdTube
Output capacitance
2 pF
ColdTube

Other

Plate supply voltage
135 V
ClassA
Screen-grid supply voltage
135 V
ClassA
Cathode bias resistor
260 Ohm
ClassA
Plate current
27.5 mA
ClassA
Screen-grid current
8.5 mA
ClassA
Plate supply voltage
125 V
ClassA
Screen-grid supply voltage
125 V
ClassA
Plate current
24 mA
ClassA
Transconductance minimum
28000 uS
Transconductance maximum
40000 uS

Characteristics

Transconductance
35800 uS
ClassA;Va=135V
Plate resistance
0.03 MOhm
ClassA
Equivalent noise resistance
160 Ohm
Input conductance at 100 MHz
2200 uS
Transconductance
34000 uS
ClassA;Va=125V

Data set 03

196X LM Ericsson

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Characteristics

Heater voltage
6.3 V
Heater current
450 mA
Plate resistance
45 ohm
Amplification factor
35

Other

Maximum plate voltage
165 V
Maximum screen voltage
165 V
Maximum plate dissipation
4.5 W
Maximum screen dissipation
1.65 W
Broadband upper frequency
300 Mc/s