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PCF802

Triode-pentode for television line-scan oscillator and power-amplifier service; both sections have low plate-dissipation ratings below the project power threshold.

Directly heatedCold cathodeCommon cathodeDissimilar

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

Description

Triode-pentode for television line-scan oscillator and power-amplifier 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: 0.0055 S
Amplification factor: 47
Max plate voltage: 250 V
Max screen voltage: 250 V
Max plate dissipation: 1.2 W
Max screen dissipation: 2.5 W
Max cathode current: 15 mA

Pentode section; promoted values are taken from the approved source where explicitly published.

Section 2

Triode

X-ray radiationInterelectrode capacitances

Plate resistance: 20000 Ω
Transconductance: 0.0035 S
Amplification factor: 70
Max plate voltage: 300 V
Max plate dissipation: 1.4 W
Max cathode current: 10 mA

Triode section; promoted values are taken from the approved source where explicitly published.

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)
9 V
Pentode
Alimentation du filament en serie {If
300 mA
Pentode

Data set 02

1963 Philips Electron Tubes Handbook V1

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

Plate voltage
100 V
PentodeSection
Screen voltage
100 V
PentodeSection
Control-grid voltage
-1 V
PentodeSection
Plate current
6 mA
PentodeSection
Screen current
1.7 mA
PentodeSection

Characteristic

Transconductance
5500 µS
Section2
Plate resistance
400000 Ω
Section2
Amplification factor
47
Section2

SECTION 2

Triode

Other

Plate voltage
200 V
TriodeSection
Control-grid voltage
-2 V
TriodeSection
Plate current
3.5 mA
TriodeSection

Characteristic

Transconductance
3500 µS
Section1
Plate resistance
20000 Ω
Section1
Amplification factor
70
Section1

Data set 03

1968 Mazda Belvu

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

HeaterVoltageNominal
8 V
Nominal
HeaterCurrentNominal
300 mA
Nominal
Maximum Plate Voltage
550 V
Maximum Screen Voltage
250 V
Maximum Plate Dissipation
-
Maximum Screen Dissipation
2.5 W
Maximum Cathode Current
80 mA

Characteristic

Transconductance
10000 µS
Typical
Plate Resistance
20000 ohm
Typical

SECTION 2

Triode

Other

HeaterVoltageNominal
8 V
Nominal
HeaterCurrentNominal
300 mA
Nominal
Maximum Plate Voltage
300 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 04

1972 Philips Receiving Tubes

Published operating points and test conditions from this source.

SECTION 1

Pentode

Application

Application
SineWaveOscillator_PulseShaper text

SECTION 2

Triode

Application

Application
ReactanceTube text

Data set 05

1973 Mazda Valves Binder 2

Published operating points and test conditions from this source.

SECTION 2

Triode

Other

Heater Current Ih
3 A
Heater Voltage Vh
9 V
Maximum Anode Dissipation parmax 14
-
Maximum Screen Grid Dissipation pg_(maxi —
-
Maximum Anode Supply Voltage Vaib)max 550
550 V
Maximum Anode Voltage Va(max) 250
250 V
Maximum Screen Grid Supply Voltage Vg,( b)max —
550 V
Maximum Screen Grid Voltage Vg(max) —
250 V
Maximum Cathode Current Ik(max) 10
15 mA
* Maximum Duty Factor 30 per cent, maximum pulse duration
30 µs
Grid 1 to Heater cg,_h <01 <
1 pF
I Pa (max)=1
2 W

Characteristic

To avoid hum interference the A.C. component should not exceed
65 V
Input tin 2.4
5.4 pF
Anode to Grid 1 ca-g1 1.5
0.06 pF
Anode Voltage Va 200
100 V
Screen Grid Voltage Vg.: —
100 V
Control Grid Voltage Vg, -20 --1
0 V
Anode Current la 35
60 mA
Screen Grid Current Ig> —
17 mA
Mutual Conductance gm 3.5 5
-5 mA
Anode Current at Vg1 = 0 V —
12.5 mA
Screen Grid Current at VS1 = 0 V
3.5 mA
Anode Current at Ig = -- 10 µA, V a =
200 V
Negative Grid Voltage at V a = Vg_ = 200 V. l a = 10 µA — <
16 V
Negative Grid Voltage at ig - -i- 03 yuA <13 <
13 V
0 I !III 11■IIIUR NII_ —jiI iI.~c~ -O
5 v

Data set 06

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

Plate supply voltage
650 V
Screen-grid supply voltage
650 V

Characteristic

Plate voltage
100 V
ClassA
Screen-grid voltage
100 V
ClassA
Plate current
6 mA
ClassA
Screen-grid current
1.7 mA
ClassA
Input impedance at 60 Hz
300 kohm
60Hz

SECTION 2

Triode

Other

Plate supply voltage
550 V

Characteristic

Plate voltage
200 V
ClassA
Grid No.1 voltage
-2 V
ClassA
Plate current
3.5 mA
ClassA
Input impedance at 60 Hz
50 kohm
60Hz

Data set 07

1999 Philips E-Z

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristic

Anode current I,
6 mA
Transconductance S
5.5 mA/V
Internal resistance R
400 kΩ
Grid No.1 voltage Vgl -1 0 max.-16 max
-1.3 V
Grid No. !l current Igl
~ 0.3 µA
Grid circuit impedance Zg) (f
50 Hz

Capacitance

Grid No.l to all except anode Cgl(a)
5.4 pF
Anode to grid No. 1 Cag[
0.06 pF
Grid No.l to heater Cglf max
0.1 pF

SECTION 2

Triode

Characteristic

Anode current Iy
3.5 mA
Transconductance S
3.5 mA/V
Heater current 1f
300 mA
Heater voltage V¢
9 V
Grid to all except anode Cg(a)
2.4 pF
Anode to grid Cag
1.5 pF
Grid to heater Cgf max
0.1 pF
Anode voltage V, 200 200
200 V
Grid voltage Vg -2 - max.—
-1.3 V
Grid current Ig - 10
0.3 µA
Anode dissipation max
1.4 W
Cathode current max
10 mA
Cathode to heater voltage Vit max
100 V
Grid circuit impedance Zg (£
50 Hz
2) To avoid hum interference the A.C. component of V¢ should not exceed
65 V
1000 uV when the A.C. component of Vif does not exceed
25 V
| Il 4+=HA++
-10 V
L 1L f\\) Vg
100 V
\ y
-5 V
\L v ST T 3
-10 V
Li
-50 V