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Voltage - Triode (under 100V) ·Triode-Triode

ECC86

Low-voltage RF double triode designed for RF amplification and self-oscillating mixer service from 6-, 12-, or 24-volt battery supplies, enabling tuner operation without conventional high plate voltage.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: 9DE
Socket code: B9A
Base pins: 9
Nominal heater: 6.3 V / 330 mA

Description

Low-voltage RF double triode for RF amplification or self-oscillating mixer service from 6 V, 12 V, or 24 V battery supplies.

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: 9DE
Socket code: B9A
Base pins: 9
Nominal heater voltage: 6.3 V
Nominal heater current: 330 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

9DE - Terminal pinout

Electrical assignments shared by every tube using this base designation.

Terminal	Section	Connection	Evidence
PIN12P	B	P — Plate (Anode) EIA chart transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9DE
PIN22G1	B	G1 — Control Grid EIA chart transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9DE
PIN32K	B	K — Cathode EIA chart transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9DE
PIN4H	—	H — Heater EIA chart transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9DE
PIN5H	—	H — Heater EIA chart transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9DE
PIN61P	A	P — Plate (Anode) EIA chart transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9DE
PIN71G1	A	G1 — Control Grid EIA chart transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9DE
PIN81K	A	K — Cathode EIA chart transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9DE
PIN9IS	A	IS — Internal Screen EIA chart transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9DE

Section ratings

2 physical sections, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances

Plate resistance: 5000 Ω
Transconductance: 0.0026 S
Amplification factor: 14
Max plate voltage: 30 V
Max plate dissipation: 0.6 W
Max cathode current: 20 mA

Electrically identical triode sections; compressed to one section row.

Section 2

Triode

X-ray radiationInterelectrode capacitances

Plate resistance: 5000 Ω
Transconductance: 0.0026 S
Amplification factor: 14
Max plate voltage: 30 V
Max plate dissipation: 0.6 W
Max cathode current: 20 mA

Second physical triode restored.

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 Amperex

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Heater/Filament Voltage
6.3 V
Heater/Filament Current
330 mA
Maximum Plate Voltage
30 V
Maximum Plate Dissipation
0.6 W

Characteristics

Transconductance
2600 uS
Amplification Factor
14

Data set 02

1963 Amperex Condensed

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

Heater voltage
6.3 V
Published heater rating
Heater current
330 mA
Published heater rating
Amplification factor
14
RFAmplifier
Plate resistance
2100 ohm
RFAmplifier
Mixer amplification factor
5
MixerSection
Mixer transconductance
2000 µS
MixerSection

Other

RF-amplifier grid voltage
0 V
RFAmplifier
RF-amplifier plate current
7.5 mA
RFAmplifier
Mixer plate voltage
25 V
MixerSection
Mixer plate current
2.6 mA
MixerSection

Data set 03

1963 Philips Electron Tubes Handbook V1a

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

Plate voltage
6.3 V
EachSection
Plate current
0.9 mA
EachSection
Grid voltage
-0.4 V
EachSection
Transconductance
2.6 mA/V
EachSection
Amplification factor
14
EachSection
Equivalent noise resistance
1 kOhm
EachSection

Other

Plate voltage
12.6 V
RFAmplifier
Plate current
2.5 mA
RFAmplifier
Transconductance
4.6 mA/V
RFAmplifier
Plate voltage
25 V
RFAmplifier
Plate current
7.5 mA
RFAmplifier
Maximum plate voltage
30 V
EachSection
Maximum plate dissipation
0.6 W
EachSection
Maximum cathode current
20 mA
EachSection

Capacitance

Anode-to-grid capacitance
1.3 pF
EachSection
Input capacitance
3 pF
EachSection
Output capacitance
1.8 pF
EachSection

Data set 04

1967 Mullard Receiving Tubes for Maintenance

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

Plate voltage
6.3 V
EachSection
Plate current
0.9 mA
EachSection
Grid voltage
-0.4 V
EachSection
Transconductance
2.6 mA/V
EachSection
Amplification factor
14
EachSection
Equivalent noise resistance
1 kOhm
EachSection

Other

Plate voltage
12.6 V
RFAmplifier
Plate current
2.5 mA
RFAmplifier
Transconductance
4.6 mA/V
RFAmplifier
Plate voltage
25 V
RFAmplifier
Plate current
7.5 mA
RFAmplifier
Maximum plate voltage
30 V
EachSection
Maximum plate dissipation
0.6 W
EachSection
Maximum cathode current
20 mA
EachSection

Capacitance

Anode-to-grid capacitance
1.3 pF
EachSection
Input capacitance
3 pF
EachSection
Output capacitance
1.8 pF
EachSection

Data set 05

1999 Philips E-Z

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Heater voltage Vr_
6.3 V
Heater voltage Vr_ = 6.3 V
Heater current Ip
330 mA
Heater current Ip = 330 mA
except anode Cg
3 pF
except anode Cg =0Cg' = 3.0 pF
except grid Ca
1.8 pF
except grid Ca =2Ca' = 1.8 pF
Anode to grid Cag = Ca'g'=
1.3 pF
Anode to grid Cag = Ca'g'= 1.3 pF
Anode to anode of other section Cag' <
0.05 pF
Anode to anode of other section Cag' < 0.05 pF
Grid to grid of other section Cgg' <
0.005 pF
Grid to grid of other section Cgg' < 0.005 pF
Anode to grid of other section Cag® <
0.005 pF
Anode to grid of other section Cag® < 0.005 pF
Anode voltage Vg
6.3 V
Anode voltage Vg = 6.3V
Anode current Ia
0.9 mA
Anode current Ia = 0.9 mA
Grid voltage Vg = ~0.4V
0.4 V
Grid voltage Vg = ~0.4V
Anode voltage Va
25 V
Anode voltage Va = 6.3 12.6 25V
Grid resistor Rg
100
Grid resistor Rg =100 100 100 ko
Anode current Ia
7.5 mA
Anode current Ia = 0.9 2.5 7.5 mA
Anode supply voltage Vpa
25 V
Anode supply voltage Vpa = 6.3 1 2.6 25 ¢
Anode resistor Ry
500 A
Anode resistor Ry = 500 500 500 @
Grid resistor RG
220
Grid resistor RG = 220 220 220 kR
Oscillator voltage Vosc=
1.5 V
Oscillator voltage Vosc= 0.7 1.0 1.5 V(RMS)
Anode current Ig
2.6 mA
Anode current Ig = 0.4 1.0 2.6 mA
Anode voltage Va max.
30 V
Anode voltage Va max. 30V
Anode dissipation Aa max.
0.6 mA
Anode dissipation Aa max. 0.6 W
Grid circuit resistancse Rs max.
1 mA
Grid circuit resistancse Rs max. 1 MQ
Cathode current Ik max.
20 mA
Cathode current Ik max. 20 mA
Voltage between heater and cathode Vkf max.
30 V
Voltage between heater and cathode Vkf max. 30V
and cathode Rkf wax.,
20 A
and cathode Rkf wax., 20 kR

Characteristics

Mutual conductance S
2.6 mA/V
Mutual conductance S = 2.6 mA/V
Amplification factor @
14 A
Amplification factor @ = 14
Mutual conductance
7.8 mA/V
Mutual conductance 5 =2.6 4.6 7.8 mA/V
Internal resistance Ry
2.1 kQ
Internal resistance Ry = 5 3.4 2.1 kQ
Equivalent noise resistance Req
1 V
Equivalent noise resistance Req = 1 ~ k@
Conversion conductance S¢
2 mA/V
Conversion conductance S¢ = 0.8 1.3 2.0 ma/v
Internal resistance R{
5.3 A
Internal resistance R{ = 11 8 5.3 kR