Skip to main content
Tube Tinker — Electron Tube Database
Alternatives & variationsDownload PDF datasheet

Voltage - Triode (single) ·Triode

EC92

High-transconductance triode for grounded-grid, cascode, oscillator, and mixer service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
B7G
Base pins
7
Nominal heater
6.3 V / 150 mA

Description

High-transconductance triode for grounded-grid, cascode, oscillator and mixer service.

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
150 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

1 physical section, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
16500 Ω
Transconductance
0.0055 S
Amplification factor
66
Max plate voltage
300 V
Max plate dissipation
2.5 W
Max cathode current
15 mA

Triode section; values semantically promoted from published characteristics/maximum-ratings tables where present.

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

Triode

Characteristic

  • Chauffage : Indirect (cathode isolee du filament)}. . ; vr

    63 V

    Triode

  • Alimentation du filament en parallele ou en serie ! f

    150 mA

    Triode

Other

  • Tension de l'anode . . . . . . Va

    100 V

    Triode

  • Courant anodique . . . . . . la

    3 mA

    Triode

  • Resistance interne . . . 2 . . #

    16.5 kohm

    Triode

  • Tension de l'anode Va

    300 V

    Triode

  • Puissance dissipee sur l’anode . Pa

    2.5 W

    Triode

  • Tension de la grille , Ve

    50 V

    Triode

  • Resistance du circuit de la grille Rg

    1 Mohm

    Triode

  • Tension entre filament et cathode, Vkf

    90 V

    Triode

Capacitance

  • Capacite grille-cathode . . . . . €Cg(k+f)

    22 pF

    Triode

  • Capacite anode-cathode . . . . . Ca(k+f)

    0.75 pF

    Triode

  • Capacite anode-grille, L . 2 . . . . Cag

    1.5 pF

    Triode

  • Capacite cathode-filament . . . . . . Ckf

    2.3 pF

    Triode

  • Capacite anode (grille + filament) . . Ca(g+f)

    1.7 pF

    Triode

  • Capacite cathode (grille + filament). . Ck(g+f)

    45 pF

    Triode

Data set 02

1953 RFT Rundfunk Technik

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

  • Heater voltage

    6.3 V

    Published nominal value

  • Heater current

    150 mA

    Published nominal value

  • Transconductance

    5500 µS

    Published operating characteristic

Other

  • Maximum plate dissipation

    2.5 W

    Published maximum rating

Data set 03

1963 Philips Electron Tubes Handbook V1a

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Plate voltage

    170 V

  • Grid voltage

    -1 V

  • Plate current

    8.5 mA

  • Maximum plate voltage

    300 V

  • Maximum plate dissipation

    2.5 W

Characteristic

  • Transconductance

    5900 uS

  • Amplification factor

    66

Capacitance

  • Grid capacitance

    2.6 pF

  • Plate capacitance

    0.55 pF

  • Grid-plate capacitance

    1.6 pF

Data set 04

1972 Philips Receiving Tubes

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Anode current I

    10 mA

  • Transconductance S

    5.5 mA/V

  • Heater voltage Vg

    6.3 V

  • Heater current If

    150 mA

  • Anode voltage Vao max

    - to 550 V

    Maximum

  • Va max

    - to 300 V

    Maximum

  • Anode dissipation W, max

    - to 2.5 W

    Maximum

  • Cathode current % max

    - to 15 mA

    Maximum

  • Grid voltage ~Vg max

    - to 50 V

    Maximum

  • Grid resistor (automatic bias) Rg max

    - to 1 MQ

    Maximum

  • Cathode to heater voltage Vkf max

    - to 100 V

    Maximum

  • Heater voltage V¢

    6.3 V

  • Heater current I

    180 mA

Capacitance

  • Grid to all except anode Cg(a)

    2.6 pF

  • Anode to all except grid Ca(g)

    0.55 pF

  • Anode to grid Cag

    1.6 pF

  • Anode to cathode Cak

    0.24 pF

  • Cathode to heater Ckf

    2.2 pF

  • Grid to heater Cgf max

    - to 0.15 pF

    Maximum

  • Anode to grid + heater Ca/gf

    1.8 pF

  • Cathode to grid + heater Cx/gf

    4.5 pF

Characteristic

  • Grid voltage Vg -1.0 -1.0 -1,0

    -2 V

  • Anode current I, 3.0 8.5 11.5

    10 mA

  • Transconductance S 3.75 5.9 6.7

    5.5 mA/V

  • Internal resistance Rj 16.5 11 10.5 I

    1 k2

Data set 05

1999 Philips E-Z

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Typical anode voltage

    250 V

Characteristic

  • Typical transconductance

    5500 µS

    Va=250V