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Voltage Radio Detector Converter ·Pentode-Triode

PCF80

Triode-pentode for VHF oscillator and frequency-converter service.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: B9A
Socket code: B9A
Base pins: 9
Nominal heater: 9 V / 300 mA

Description

Triode-pentode for VHF oscillator and frequency-converter service.

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: B9A
Socket code: B9A
Base pins: 9
Nominal heater voltage: 9 V
Nominal heater current: 300 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

B9A - Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

2 physical sections, each with unique specifications.

Section 1

Pentode

X-ray radiationInterelectrode capacitances

Plate resistance: 400000 Ω
Transconductance: 0.006 S
Amplification factor: 50
Max plate voltage: 250 V
Max screen voltage: 175 V
Max plate dissipation: 2.5 W
Max screen dissipation: 0.5 W
Max cathode current: 25 mA

RF pentode mixer system.

Section 2

Triode

X-ray radiationInterelectrode capacitances

Plate resistance: 4000 Ω
Transconductance: 0.005 S
Amplification factor: 20
Max plate voltage: 250 V
Max plate dissipation: 1.1 W
Max cathode current: 14 mA

Low-mu triode oscillator system.

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

1953 La Radiotechnique

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristic

Indirect (cathodes isolees du filament)
8 A
Pentode
Alimentation du filament en serie. | Vt
9 V
Pentode

Other

Plate voltage
170 V
Pentode
Screen-grid voltage
170 V
Pentode
Control-grid voltage
2 V
Pentode
Plate current
10 mA
Pentode
Screen-grid current
28 mA
Pentode
Transconductance
62 mA/V
Pentode
Control-grid capacitance
55 pF
Pentode
Capacite anode-grille 1
0.025 pF
Pentode
Capacite anode pentode-anode triode
0.07 pF
Pentode
Capacite anode pentode-grille triode
0.02 pF
Pentode
Capacite grille 1 pentode-anode triode
0.16 pF
Pentode
Plate voltage
250 V
Pentode
Screen-grid voltage
175 V
Pentode
Plate dissipation
1.7 W
Pentode
Screen-grid dissipation
5 W
Pentode
Control-grid voltage
1.3 V
Pentode
[1 1-1 419 A RE Vkf
100 V
Pentode
[111:119 A RS Vkf
200 V
Pentode
22pF 220 fiI en
22 pF
Pentode
Plate voltage
170 V
Pentode
Screen-grid voltage
170 V
Pentode
Grid-circuit resistance 1 Rg,
0.1 Mohm
Pentode
Cathode-bias resistance
820 ohm
Pentode
Tension d'oscillation (grille 1)
35 V
Pentode
Plate current
5.2 mA
Pentode
Screen-grid current
15 mA
Pentode
Transconductance de conversion
2.1 mA/V
Pentode
Plate resistance
870 kohm
Pentode

SECTION 2

Triode

Other

Plate voltage
100 V
Triode
Tension de la grille
2 V
Triode

Capacitance

Capacite de la grille
25 pF
Triode
Plate capacitance
1.8 pF
Triode
Capacite anode-grille
1.5 pF
Triode
Plate voltage
250 V
Triode
Plate dissipation
15 W
Triode
Grid-circuit resistance
5 Mohm
Triode
Tension de la grille
1.3 V
Triode
ment)
100 V
Triode
e en u en e Vkf
200 V
Triode
(3) La composante continue ne doit pas depasser 120 V
120 V
Triode

Data set 02

1955 Marconi

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

Pentode Grid-All Capacitance
4.5 pF
Pentode Anode-All Capacitance
4 pF
Pentode Anode-Grid Capacitance
0.02 pF
Frequency Changer Maximum Signal Frequency
250 MHz
Typical IF Frequency
34 MHz

SECTION 2

Triode

Other

Triode Grid-Cathode Capacitance
3 pF
Triode Anode-Cathode Capacitance
0.5 pF
Triode Anode-Grid Capacitance
2 pF
Typical Oscillator Voltage Minimum
2 V
Typical Oscillator Voltage Maximum
3 V

Data set 03

1961 Ferranti Technical Handbook

Published operating points and test conditions from this source.

SECTION 2

Triode

Characteristics

Heater Voltage
9 V
Heater Current
300 mA
Maximum Intended Frequency
220 MHz
FrequencyChanger

Data set 04

1963 Philips Electron Tubes Handbook V1

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

Plate voltage
170 V
Mixer
Screen voltage
170 V
Mixer
Control-grid voltage
-2 V
Mixer
Plate current
10 mA
Mixer
Screen current
2.8 mA
Mixer

Characteristic

Transconductance
6200 µS
Section2
Plate resistance
400000 Ω
Section2
Amplification factor
47
Section2

SECTION 2

Triode

Other

Plate voltage
100 V
Oscillator
Control-grid voltage
-2 V
Oscillator
Plate current
14 mA
Oscillator

Characteristic

Transconductance
5000 µS
Section1
Amplification factor
20
Section1

Data set 05

1967 Mullard Receiving and Amplifying Valves

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristic

Plate voltage
170 V
ClassA
Screen-grid voltage
170 V
ClassA
Grid No.1 voltage
-2 V
ClassA
Plate current
10 mA
ClassA
Screen-grid current
2.8 mA
ClassA
Input resistance at 50 MHz
0.01 megohm
50MHz
Equivalent noise resistance
1500 ohm

Other

Plate supply voltage
550 V

SECTION 2

Triode

Characteristic

Plate voltage
100 V
ClassA
Grid No.1 voltage
-2 V
ClassA
Plate current
14 mA
ClassA

Other

Plate supply voltage
550 V

Data set 06

1968 Mazda Belvu

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

HeaterVoltageNominal
9 V
Nominal
HeaterCurrentNominal
300 mA
Nominal
Maximum Plate Voltage
250 V
Maximum Screen Voltage
250 V
Maximum Plate Dissipation
2.5 W
Maximum Screen Dissipation
0.5 W
Maximum Cathode Current
25 mA

Characteristic

Transconductance
5500 µS
Typical
Plate Resistance
300000 ohm
Typical

SECTION 2

Triode

Other

HeaterVoltageNominal
9 V
Nominal
HeaterCurrentNominal
300 mA
Nominal
Maximum Plate Voltage
250 V
Maximum Plate Dissipation
1.5 W
Maximum Cathode Current
20 mA

Characteristic

Transconductance
5000 µS
Typical
Amplification Factor
50
Typical
Plate Resistance
18000 ohm
Typical

Data set 07

1972 Philips Receiving Tubes

Published operating points and test conditions from this source.

SECTION 1

Pentode

Application

Application
FrequencyChangerMixer text

SECTION 2

Triode

Application

Application
FrequencyChangerOscillator text

Data set 08

1973 Mazda Valves Binder 2

Published operating points and test conditions from this source.

SECTION 2

Triode

Characteristic

* Taken atVa =170: VgY =170: 1a =10mA: Vgt =
-2 V
CHARACTERISTIC CURVES
1 a

Data set 09

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristic

Plate voltage
170 V
ClassA
Screen-grid voltage
170 V
ClassA
Grid No.1 voltage
-2 V
ClassA
Plate current
10 mA
ClassA
Screen-grid current
2.8 mA
ClassA
Input resistance at 50 MHz
0.01 megohm
50MHz
Equivalent noise resistance
1500 ohm

Other

Plate supply voltage
550 V

SECTION 2

Triode

Characteristic

Plate voltage
100 V
ClassA
Grid No.1 voltage
-2 V
ClassA
Plate current
14 mA
ClassA

Other

Plate supply voltage
550 V

Data set 10

1999 Philips E-Z

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristic

Anode current Iy
10 mA
Transconductance S
6.2 mA/V
Heater current It
300 mA
Heater voltage Vs
9 V
Anode triode to grid No.1 pentode CaTglP max
0.16 pF
Grid triode to anode pentode cgTaP max
0.02 pF
Anode triode to anode pentode CaTaP max
0.07 pF
Anode voltage Va
170 V
Grid No.2 voltage Vg2
170 V
Grid No.2 current Ig2
2.8 mA
Internal resistance Ry
0.4 MΩ
(Frequency [1]
50 MHz
(Frequency [2]
10 kΩ
Grid No.2 current IgZ 2.0
1.5 mA
Conversion conductance S¢ 2.2
2.1 mA/V
Anode voltage Vao max
550 V
Va max
250 V
Grid No.2 voltage Vgzo max
550 V
Ix = max [1]
10 mA
Ix = max [2]
200 V
Anode dissipation W, max
1.7 W
at W, = min [1]
1.2 W
at W, = min [2]
0.5 W
at W, = max [1]
1.2 W
at W, = max [2]
0.75 W

Capacitance

Anode to all except grid No.l Ca(gl)
3.4 pF
Grid No.1 to all except anode Cgl(a)
5.2 pF

Other

Anode voltage Va 170
170 V
Grid No.2 voltage Vg2 170
170 V
Grid No.l resistor Rgl 0.1
0.1 MΩ
Anode current I, 6.5
5.2 mA

SECTION 2

Triode

Characteristic

Anode current I,
14 mA
Transconductance S
5 mA/V
Anode voltage Va
100 V
Grid voltage Vg
-2 V
Anode current I
14 mA
isfactorily with a peak cathode current of
100 mA
with new tubes should be limited automatically to this max. value of
100 mA
Grid resistor Rg max
0.5 MΩ
cathode neg Vit max
100 V
cathode pos Vki max
200 V
D.C. component max
120 V
) jo
0 V
Vg1
0 V
14 11 W2
170 V
(k£)) 3: Vg =2
100 V

Capacitance

Anode to all except grid (1-4+5+7+8) Ca(g)
1.8 pF
Grid to all except anode (9-4+5+7+8) Cg(a)
2.5 pF
Anode to grid Cag
1.5 pF

Other

Anode voltage Vag max
550 V
Va max
250 V
Anode dissipation W, max
1.5 W
average Ik max
14 mA