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Voltage - Dual Triode (similar) ·Triode-Triode

E90CC

Special-quality twin triode intended for switching, counting, and computer circuits, with long-life construction and characteristics optimized for dependable digital pulse operation.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
2
Base
-
Socket code
B7G
Base pins
7
Nominal heater
6.3 V / 400 mA

Description

Special-quality common-cathode double triode for computer circuits requiring stable characteristics and long life.

Socket description

Miniature 7-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
B7G
Base pins
7
Nominal heater voltage
6.3 V
Nominal heater current
400 mA
Parallel heater voltage
6.3 V
Parallel heater current
400 mA
Series capable
Yes

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
4500 Ω
Transconductance
0.006 S
Amplification factor
27
Max plate voltage
300 V
Max plate dissipation
2 W
Max cathode current
15 mA

Representative row for repeated identical sections.

Section 2

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
4500 Ω
Transconductance
0.006 S
Amplification factor
27
Max plate voltage
300 V
Max plate dissipation
2 W
Max cathode current
15 mA

Second physical triode section; added to align rows with SectionCount.

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 AEG

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Typical Plate Voltage

    100 V

  • Typical Plate Current

    8.5 mA

Capacitance

  • GridPlateCapacitance

    3.9 pF

  • Grid Earth Capacitance

    3.7 pF

Data set 02

1958 Amperex Industrial

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Maximum plate voltage

    300 V

    Published table

  • Plate current

    15 mA

    Published table

Characteristic

  • Plate resistance

    6000 ohm

    Published table

  • Amplification factor

    27

    Published table

  • Heater/filament voltage

    6.3 V

    Published rating

  • Heater/filament current

    400 mA

    Published rating

Data set 03

1963 Amperex Condensed

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

  • Heater voltage

    6.3 V

    Published rating

  • Heater current

    400 mA

    Published rating

  • Published characteristic value

    3.4

    PremiumQuality

  • Published characteristic value 2

    0.35

    PremiumQuality

Other

  • Maximum plate voltage

    300 V

    PremiumQuality

  • Maximum plate current

    15 mA

    PremiumQuality

Data set 04

1963 Philips Electron Tubes Handbook V1a

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Plate voltage

    100 V

    EachUnit

  • Plate current

    5.6 mA

    EachUnit

Characteristic

  • Transconductance

    6000 uS

    EachUnit

  • Amplification factor

    27

    EachUnit

Data set 05

1963 Philips Electron Tubes Handbook V3

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

  • Heater voltage

    6.3 V

    Published heater rating

  • Heater current

    400 mA

    Published heater rating

  • Transconductance

    6000 µS

    EachTriode

  • Amplification factor

    27

    EachTriode

Other

  • Plate voltage

    100 V

    EachTriode

  • Grid bias

    -2.1 V

    EachTriode

  • Plate current

    14.5 mA

    EachTriode

Capacitance

  • Plate capacitance

    0.35 pF

    EachTriode

  • Grid capacitance

    3.4 pF

    EachTriode

Data set 06

1963 Siemens

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

  • Plate current

    8.5 mA

    Nominal

Other

  • Computer-service plate current

    5.6 mA

    Computing equipment

Data set 07

1967 Mullard Receiving Tubes for Maintenance

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Ih

    400 mA

    Published in approved E90CC.pdf target datasheet; Section1

  • The max imu m var iat io n of he ate r cur ren t at Vh = 6.3V is

    20 mA

    Published in approved E90CC.pdf target datasheet; Section1

  • *ca - g 2.0 2.5 3

    0 pF

    Published in approved E90CC.pdf target datasheet; Section1

  • * Cin 2.9 3.4 3

    9 pF

    Published in approved E90CC.pdf target datasheet; Section1

  • Cg' - h

    0.3 pF

    Published in approved E90CC.pdf target datasheet; Section1

  • Cg'-ll

    0.15 pF

    Published in approved E90CC.pdf target datasheet; Section1

  • ) Ca ' - a." 1

    4 pF

    Published in approved E90CC.pdf target datasheet; Section1

  • cg'_g'

    0.22 pF

    Published in approved E90CC.pdf target datasheet; Section1

  • Ca' - g'

    0.15 pF

    Published in approved E90CC.pdf target datasheet; Section1

  • Ck - h

    6.5 pF

    Published in approved E90CC.pdf target datasheet; Section1

  • at Va = 100V , Vg = - 2.1V 8.5 4.5 to

    12.5 mA

    Published in approved E90CC.pdf target datasheet; Section1

  • v« = OV, Rg = 47kO 5.0 to 6.2

    4.5 mA

    Published in approved E90CC.pdf target datasheet; Section1

  • R k = 2500 (decoupled) 6.0 4.5 to 7.5

    3 mA

    Published in approved E90CC.pdf target datasheet; Section1

  • Ik max

    15 mA

    Published in approved E90CC.pdf target datasheet; Section1

  • *ikiPk) max

    75 mA

    Published in approved E90CC.pdf target datasheet; Section1

  • * ig(ll k) max

    1 mA

    Published in approved E90CC.pdf target datasheet; Section1

  • T bu 1b max

    170 °C

    Published in approved E90CC.pdf target datasheet; Section1

Characteristic

  • la 8

    5 mA

    Published in approved E90CC.pdf target datasheet; Section1

Data set 08

1999 Philips E-Z

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

  • Life expectancy

    10000 h

    Published datasheet value

  • Heater voltage Vs

    6.3 V

    Published datasheet value

  • Heater current I

    400 mA

    Published datasheet value

  • Heater current I¢

    420 mA

    Published datasheet value

  • Anode voltage Va

    100 V

    Published datasheet value

  • Anode current

    -12.5 mA

    Published datasheet value

  • Mutual conductance S

    6 mA/V

    Published datasheet value

  • Cathode resistor Ry

    250 Q

    Published datasheet value

  • Mutual conductance S

    3 mA/V

    Published datasheet value

  • Voltage between electrodes v

    300 V

    Published datasheet value

  • Cathode to heater (&

    6.5 pF

    Published datasheet value

  • under the following conditions during

    0 h

    Published datasheet value

  • I, =

    8 mA

    Published datasheet value

  • qzz Ia' =

    0 mA

    Published datasheet value

  • Grid current Ig max

    250 µA

    Published datasheet value

  • Cathode current Ik

    15 mA

    Published datasheet value

  • Cathode peak current Ikp max

    75 mA

    Published datasheet value

  • Voltage between cathode and heater Vit max

    100 V

    Published datasheet value

  • fixed bias Rg max

    0.5 MQ

    Published datasheet value

  • Heater voltage: The average heater should be

    6.3 V

    Published datasheet value

  • Variations of the heater voltage exceeding the range of

    6 V

    Published datasheet value

  • (m4) Ay %J{ - f JMNREY A

    -8 V

    Published datasheet value

  • / / P T T ‘I y

    -9 V

    Published datasheet value

  • l’ A /’ g M,((

    12 V

    Published datasheet value