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Voltage - Triode (with diode, heptode or hexode) ·Hexode-Triode

ECH84

Triode-hexode combination developed primarily for television synchronizing-pulse separation and amplification. Its multi-grid section processes sync pulses while the triode provides an associated amplification or pulse-processing stage.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: B9A
Socket code: B9A
Base pins: 9
Nominal heater: 6.3 V / 300 mA

Description

Triode-heptode for separation and amplification of television synchronizing signals.

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: 6.3 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

Triode

X-ray radiationInterelectrode capacitances

Plate resistance: 13500 Ω
Transconductance: 0.0037 S
Amplification factor: 50
Max plate voltage: 550 V
Max plate dissipation: 1.3 W
Max cathode current: 15 mA

Published maximum ratings and typical characteristics promoted from the approved source.

Section 2

Hexode

X-ray radiationInterelectrode capacitances

Plate resistance: 400000 Ω
Transconductance: 0.0022 S
Amplification factor: 16
Max plate voltage: 550 V
Max screen voltage: 250 V
Max plate dissipation: 1.3 W
Max screen dissipation: 0.6 W
Max cathode current: 25 mA

Published maximum ratings and typical characteristics promoted from the approved source.

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

1961 Ferranti Technical Handbook

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

Heater Voltage
6.3 V
Heater Current
300 mA
Application
Time-base oscillator
Television

SECTION 2

Hexode

Characteristic

Application
Synchronizing pulse separator
Television

Data set 02

1963 Amperex Condensed

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Triode plate voltage
60 V
TriodeSection
Triode plate current
2 mA
TriodeSection

Characteristic

Triode amplification factor
16
TriodeSection

SECTION 2

Hexode

Characteristic

Heater voltage
6.3 V
Published heater rating
Heater current
300 mA
Published heater rating
Transconductance
2200 µS
HeptodeSection

Other

Heptode plate voltage
135 V
HeptodeSection
Heptode screen voltage
14 V
HeptodeSection
Heptode plate current
1.7 mA
HeptodeSection
Heptode screen current
0.9 mA
HeptodeSection

Data set 03

1963 Philips Electron Tubes Handbook V1a

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

Heater voltage
6.3 V
Published heater rating
Heater current
300 mA
Published heater rating
Triode transconductance
3700 µS
TriodeSection
Triode amplification factor
50
TriodeSection

Other

Heptode plate voltage
135 V
HeptodeSection
Heptode screen voltage
14 V
HeptodeSection
Heptode plate current
1.7 mA
HeptodeSection
Heptode screen current
0.9 mA
HeptodeSection
Triode plate voltage
50 V
TriodeSection
Triode plate current
3 mA
TriodeSection

Data set 04

1967 Mullard Receiving and Amplifying Valves

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

Plate Voltage
50 V
TriodeSection
Plate Current
3 mA
TriodeSection
Transconductance
3700 uS
TriodeSection
Amplification Factor
50
TriodeSection
Transconductance
3700 uS
Amplification Factor
50

Other

Maximum Plate Voltage
250 V
Maximum Plate Dissipation
1.3 W
Maximum Cathode Current
10 mA
Interelectrode Capacitance Data Published
1
SourceTablePresent

SECTION 2

Hexode

Characteristic

Plate Voltage
135 V
HeptodeSection
Screen Voltage
60 V
HeptodeSection
Plate Current
1.7 mA
HeptodeSection
Screen Current
0.9 mA
HeptodeSection
Transconductance
2200 uS
HeptodeSection
Transconductance
2200 uS

Other

Maximum Plate Voltage
250 V
Maximum Screen Voltage
250 V
Maximum Plate Dissipation
1.7 W
Maximum Screen Dissipation
0.8 W
Maximum Cathode Current
12.5 mA
Interelectrode Capacitance Data Published
1
SourceTablePresent

Data set 05

1968 Mazda Belvu

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

Heater voltage
6.3 V
Published nominal value
Heater current
300 mA
Published nominal value

Other

Maximum plate dissipation
1.3 W
Published maximum rating

SECTION 2

Hexode

Characteristics

Heater voltage
6.3 V
Published nominal value
Heater current
300 mA
Published nominal value

Other

Maximum plate dissipation
1.7 W
Published maximum rating
Application
Television synchronization separator/amplifier
Printed source application

Data set 06

1972 Philips Receiving Tubes

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

HeaterVoltageNominal
6.3 V
Nominal
HeaterCurrentNominal
300 mA
Nominal
Maximum Plate Voltage
550 V
Maximum Plate Dissipation
1.3 W
Maximum Cathode Current
15 mA

Characteristic

Transconductance
3700 µS
Typical
Amplification Factor
50
Typical
Plate Resistance
13500 ohm
Typical

SECTION 2

Hexode

Other

HeaterVoltageNominal
6.3 V
Nominal
HeaterCurrentNominal
300 mA
Nominal
Maximum Plate Voltage
550 V
Maximum Screen Voltage
250 V
Maximum Plate Dissipation
1.3 W
Maximum Screen Dissipation
0.6 W
Maximum Cathode Current
25 mA

Characteristic

Transconductance
2200 µS
Typical
Plate Resistance
400000 ohm
Typical

Data set 07

1973 Mazda Valves Binder 2

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Heater Voltage Vh
63 V
Heater Current Ih
3 A
Maximum Anode Dissipation pa(max) 13
17 W
Maximum Screen Grids Dissipation p82+$4(max) —
8 W
Maximum Anode Supply Voltage Va(b)max 550
550 V
Maximum Anode Voltage Va(max) 250
250 V
Maximum Screen Grids Supply Voltage Vg_ iS4(b)max —
550 V
Maximum Screen Grids Voltage V82+ g4 (max) —
250 V
Maximum Peak Negative Grid 3 Voltage —v$3(pk)max —
150 V
Maximum Cathode Current Ik(max) 10
125 mA
Maximum Heater to Cathode Voltage Vh-k(max) —
100 V
Maximum Negative Grid 3 Voltage (I$3 = + 03A)
1.3 V

Characteristic

Minimum Screen Grids Voltage Vg2+84(min)
10 V
Grid Voltage —v81(pk)max 200
150 V
Anode Heptode to Anode Triode cah-at <
25 pF
Anode Heptode to Grid Triode cah-gt <
9 pF
Grid 1 to Anode Triode C8i_at <
8 pF
Grid 1 to Grid Triode c8t_gt <
10 pF
Grid 3 to Anode Triode C83_at <
13 pF
Anode Heptode to Grid 1 cah-g1 <
9 pF
Triode Input Cin(t)
3 pF
Anode Triode to Grid Triode cat_gt
11 pF
Anode Voltage Va 50
135 V
Screen Grids Voltage V$2 g, —
14 V
Grid 3 Voltage V83 —
0 V
Control Grid Voltage V8i 0
0 V
Anode Current la 30
17 mA
Screen Grids Current I$2+g4 —
9 mA
Mutual Conductance gm 3.7
2.2 mA
Grid 3 Voltage for l a = 20 µA Vg„
-20 V
Control Grid Voltage for l a = 20 µA V8i — —
19 V
Anode Current (Va = 200 V, Vg = —
11 V

Data set 08

1999 Philips E-Z

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

Anode voltage Va
0 V
Published datasheet value
Anode current Iy
3 mA
Published datasheet value
Transconductance S
3.7 mA/V
Published datasheet value
Anode voltage Va
135 V
Published datasheet value
Grids No.2 and
4 v
Published datasheet value
Grids No.2 and 4 voltage Vg2+4
14 V
Published datasheet value
Anode current I3
1.7 mA
Published datasheet value
Grids No.2 and 4 current 12244
0.9 mA
Published datasheet value
Transconductance S
2.2 mA/V
Published datasheet value
Heater voltage Ve
6.3 V
Published datasheet value
Heater current Ig
300 mA
Published datasheet value

Capacitance

Grid to all except anode Cg(a)
3 pF
Published datasheet value
Anode to grid Cag
1.1 pF
Published datasheet value
Anode to grid No.1 Cagl max
0.009 pF
Published datasheet value
Grid triode to grid No. 1 heptode CnglH max
0.1 pF
Published datasheet value
Anode triode to grid No.1 heptode CaTng max
0.08 pF
Published datasheet value
Anode triode to grid No. 3 heptode caTg3H max
0.13 pF
Published datasheet value
Grid triode to anode heptode CgTaH max
0.09 pF
Published datasheet value
Anode triode to anode heptode CaTaH max
0.25 pF
Published datasheet value

Other

Anode voltage Va
0 V
Published datasheet value
Grid voltage Vg
0 v
Published datasheet value
Anode current Iy
3 mA
Published datasheet value
Transconductance S
3.7 mA/V
Published datasheet value
Anode voltage Va
200 V
Published datasheet value
Grid voltage Vg
-1 V
Published datasheet value
Anode current I, max
0.1 mA
Published datasheet value
Grid No
3 v
Published datasheet value
Grids No.2 and
4 v
Published datasheet value
Grid No
1 v
Published datasheet value
Grids No.2 +
4 v
Published datasheet value
Grids No.2 + 4 voltage V82-}
40 ma
Published datasheet value