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PCL84

Triode-pentode designed for television synchronization and video-output service, combining signal-processing and output functions in one envelope.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: 9HX
Socket code: B9A
Base pins: 9
Nominal heater: 15 V / 300 mA

Description

Triode-pentode for television synchronization and video-output 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: 9HX
Socket code: B9A
Base pins: 9
Nominal heater voltage: 15 V
Nominal heater current: 300 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

9HX - Terminal pinout

Electrical assignments shared by every tube using this base designation.

Terminal	Section	Connection	Evidence
PIN1Base Pin	B	G1 — Control Grid Original chart label 2G1; manufacturer verification pending	Unverified EIA Base Connections printed p133, 9HX
PIN2Base Pin	B	P — Plate (Anode) Original chart label 2P; manufacturer verification pending	Unverified EIA Base Connections printed p133, 9HX
PIN3Base Pin	B	K — Cathode Original chart label 2K; manufacturer verification pending	Unverified EIA Base Connections printed p133, 9HX
PIN4Base Pin	—	H — Heater Original chart label H; manufacturer verification pending	Unverified EIA Base Connections printed p133, 9HX
PIN5Base Pin	—	H — Heater Original chart label H; manufacturer verification pending	Unverified EIA Base Connections printed p133, 9HX
PIN6Base Pin	A	P — Plate (Anode) Original chart label 1P; manufacturer verification pending	Unverified EIA Base Connections printed p133, 9HX
PIN7Base Pin	A	G3 — Suppressor GridGroup 9HX7 Original chart label 1G3; manufacturer verification pending	Unverified EIA Base Connections printed p133, 9HX
PIN7Base Pin	A	K — CathodeGroup 9HX7 Original chart label 1K; manufacturer verification pending	Unverified EIA Base Connections printed p133, 9HX
PIN7Base Pin	—	IS — Internal ScreenGroup 9HX7 Original chart label IS; manufacturer verification pending	Unverified EIA Base Connections printed p133, 9HX
PIN8Base Pin	A	G1 — Control Grid Original chart label 1G1; manufacturer verification pending	Unverified EIA Base Connections printed p133, 9HX
PIN9Base Pin	A	G2 — Screen Grid Original chart label 1G2; manufacturer verification pending	Unverified EIA Base Connections printed p133, 9HX

Section ratings

2 physical sections, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances

Plate resistance: 20000 Ω
Transconductance: 0.004 S
Amplification factor: 65
Max plate voltage: 300 V
Max plate dissipation: 1 W
Max cathode current: 12 mA

Published values promoted where clearly readable; identical repeated sections compressed when applicable.

Section 2

Pentode

X-ray radiationInterelectrode capacitances

Plate resistance: 130000 Ω
Transconductance: 0.011 S
Max plate voltage: 300 V
Max screen voltage: 250 V
Max plate dissipation: 4 W
Max screen dissipation: 1.7 W
Max cathode current: 40 mA

Published ratings and characteristics promoted where clearly stated; identical repeated sections compressed when applicable.

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

1958 Brimar Radio Valve No 7

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

Application
Cathode follower / oscillator
TriodeSection

SECTION 2

Pentode

Characteristic

Application
Video amplifier
PentodeSection

Other

Maximum Plate Dissipation
4 W
PentodeSection

Data set 02

195X Tesla

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

Heater voltage
15 V
Published nominal value or midpoint of published range
Heater current
300 mA
Published nominal value or midpoint of published range

Data set 03

1963 Philips Electron Tubes Handbook V1

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Plate voltage
200 V
TriodeSection
Control-grid voltage
-1.7 V
TriodeSection
Plate current
3 mA
TriodeSection

Characteristic

Transconductance
4000 µS
Section1
Amplification factor
65
Section1

SECTION 2

Pentode

Other

Plate voltage
200 V
VideoOutput
Screen voltage
200 V
VideoOutput
Control-grid voltage
-2.9 V
VideoOutput
Plate current
18 mA
VideoOutput
Screen current
3 mA
VideoOutput

Characteristic

Transconductance
10400 µS
Section2
Plate resistance
130000 Ω
Section2
Amplification factor
36
Section2

Data set 04

1967 Mullard Receiving and Amplifying Valves

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Plate supply voltage
550 V
Peak plate voltage
600 V

Characteristic

Plate voltage
200 V
ClassA
Grid No.1 voltage
-1.7 V
ClassA
Plate current
3 mA
ClassA

SECTION 2

Pentode

Other

Plate supply voltage
650 V
Screen-grid supply voltage
550 V
Plate voltage
170 V
VideoOutput
Screen-grid voltage
170 V
VideoOutput
Grid No.1 voltage
-2.1 V
VideoOutput
Plate current
18 mA
VideoOutput
Screen-grid current
3.2 mA
VideoOutput
Series plate resistor
3000 ohm
VideoOutput

Data set 05

1968 Mazda Belvu

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

HeaterVoltageNominal
15 V
Nominal
HeaterCurrentNominal
300 mA
Nominal
Maximum Plate Voltage
250 V
Maximum Plate Dissipation
1 W
Maximum Cathode Current
15 mA

Characteristic

Transconductance
4500 µS
Typical
Amplification Factor
65
Typical
Plate Resistance
20000 ohm
Typical

SECTION 2

Pentode

Other

HeaterVoltageNominal
15 V
Nominal
HeaterCurrentNominal
300 mA
Nominal
Maximum Plate Voltage
250 V
Maximum Screen Voltage
250 V
Maximum Plate Dissipation
4 W
Maximum Screen Dissipation
1.7 W
Maximum Cathode Current
40 mA

Characteristic

Transconductance
10500 µS
Typical
Plate Resistance
18000 ohm
Typical

Data set 06

1972 Philips Receiving Tubes

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

Heater voltage
15 V
Published nominal value
Heater current
300 mA
Published nominal value
Transconductance
4000 µS
Published operating characteristic

Other

Maximum plate dissipation
1 W
Published maximum rating
Maximum triode peak anode voltage
600 V
Pulse duration <=18% cycle, max 18 us

SECTION 2

Pentode

Characteristics

Heater voltage
15 V
Published nominal value
Heater current
300 mA
Published nominal value
Transconductance
11000 µS
Published operating characteristic

Other

Maximum plate dissipation
4 W
Published maximum rating

Data set 07

1973 Mazda Valves Binder 2

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Heater Current Ih
3 A
Heater Voltage Vh
15 V
Maximum Anode Dissipation pa(max) 1
4 W
Maximum Screen Grid Dissipation p82(max) —
17 W
Maximum Anode Supply Voltage Va(b)max 550
550 V
Maximum Anode Voltage Va(max) 250*
250 V
Maximum Screen Grid Supply Voltage V$2 (b)max —
550 V
Maximum Screen Grid Voltage Vg2(max) —
250 V
(Heater Positive) Vh-k(max) 150
200 V
(Heater Negative) Vh-k(max) 350t
200 V
Maximum Cathode Current Ik(max) 12$
40 mA
* Maximum peak anode voltage (l a <01mA) =
600 V
t Maximum D.C. component =
200 V
$ Maximum peak cathode current = 160mA for maximum pulse duration =
800 µs
Grid Triode to Heater Cgt-h <
1 pF

Characteristic

Pentode Input Cin(p)
87 pF
Pentode Output Cout(p)
42 pF
Grid 1 to Anode Pentode Cg1-ap <
1 pF
Triode Input Cin(t)
38 pF
Triode Output COUL(t)
23 pF
Anode Triode to Grid Triode Cat-gt
27 pF
Grid Triode to Grid 1 Cgt-g1 <
1 pF
Anode Triode to Grid 1 cat-g1 <
1 pF
Anode Voltage Va 200 170 200
220 V
Screen Grid Voltage VS2 - 170 200
220 V
Control Grid Voltage V85 -17 -21 -2.9 —3
4 V
Anode Current la 3 18 18
18 mA
Screen Grid Current I82 - 3 3
3 mA
Mutual Conductance gm 4 11 104
10 mA
I111:7Na:J1
1 a
• :Y:::ZN:~Z•■■■I ■ q UUIUlIIU : 11;11 .1
11 a

Data set 08

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Plate supply voltage
550 V
Peak plate voltage
600 V

Characteristic

Plate voltage
200 V
ClassA
Grid No.1 voltage
-1.7 V
ClassA
Plate current
3 mA
ClassA

SECTION 2

Pentode

Other

Plate supply voltage
650 V
Screen-grid supply voltage
550 V
Plate voltage
170 V
VideoOutput
Screen-grid voltage
170 V
VideoOutput
Grid No.1 voltage
-2.1 V
VideoOutput
Plate current
18 mA
VideoOutput
Screen-grid current
3.2 mA
VideoOutput
Series plate resistor
3000 ohm
VideoOutput

Data set 09

1999 Philips E-Z

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Chauffage: indirect par C.A. ou C.C. Ir
300 mA
Va, = max
550 V
Va = max
250 V
Vap = max
400 V
Ik = max
12 mA
Vi (x neg.; £ pos.) = max
150 V
Va, = max. +
550 V
Va = max. +
250 V
Vap (Ia [1]
< 0.1 mA
Vap (Ia [2]
600 V
Wa = max
1 W
Ik = maX
12 mA
Vkr (x neg.; f pos.) = max
150 V

Characteristic

alimentation série Vp
157 V
CaTg1P
< 0.01 pF
alimentation série Ve
15 V
Vs
200 V
Vg
-1.7 V
Ia
3 mA
Vg (Ig = 40,3 pa)
1.3 V
Va
200 V
Vg
1.7 V
I3
3 mA
Vg (Ig = +0,3 pa)
1.3 V
Vkf (k pos.; f neg.) = max,
200 V
Vo
200 V

Capacitance

Cg [1]
4 pF
Cg [2]
9 pF
Ca = 2,3 DF Ca
4.5 pF
Cag
2.7 pF
Cgr ¢ [1]
0.1 pF
Cgr ¢ [2]
0.1 pF

SECTION 2

Pentode

Capacitance

Cg [1]
3.8 pF
Cg [2]
8.7 pF
Ca = 2,3 DF Ca
4.2 pF
Cag [1]
2.7 pF
Cag [2]
0.1 pF

Characteristic

Va = 170 200
220 V
Vg2 = 170 200
220 V
Vg1 = ~241 =259
34 V
Ia = 18 18
18 mA
—_— Ri > 100 130
150 kΩ
Vg] = ‘2,1 ~2,9
-3.4 V
Vit = max,
200 V
Rg1 = max.,
2 MΩ
Vkr = max
200 V

Other

Vg = -2 2,8
~3.3 V
la = 18 18
18 mA
S = 10,4 10,0
9.7 mA
Vp = VgQ = 170 200
220 V
Ra = 3 3
3 kΩ
Vg1 = -2 ~2,8 =3
3 V
1g2 = 3,2 3,1
3.1 nA
S = 10,4 10,0
9.7 mA/V
Vag = max
550 V
Va = max,
250 V
Wa = Max.,
4 W
Vg2, = max
550 V
Vg2 = max,
250 V
Hgo = max
1.7 W
Ig = max.,
40 mA
Re1 = max
1 MΩ
Va = max
250 V
Wa = max
4 W
Vg2, =max,
550 V
Vg2 = max
250 V
Wgo = max
1.7 W
Iy = max
40 mA