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Voltage - Triode (single high frequency) ·Triode

EC88

High-frequency triode for UHF amplifier service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
9C12
Socket code
B9A
Base pins
9
Nominal heater
6.3 V / 165 mA

Description

Low-noise UHF triode intended for grounded-grid amplification in television Bands IV and V.

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
9C12
Socket code
B9A
Base pins
9
Nominal heater voltage
6.3 V
Nominal heater current
165 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

9C12 - 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
4300 Ω
Transconductance
0.0135 S
Amplification factor
65
Max plate voltage
175 V
Max plate dissipation
2 W
Max cathode current
13 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

  • Alimentation du filament en parallele. ! f

    165 mA

    Triode

Other

  • Tension de l’anode

    160 V

    Triode

  • Tension de la grille

    -1.25 V

    Triode

  • Courant anodique

    125 mA

    Triode

  • Pente

    135 mA/V

    Triode

  • R equivalente

    240 ohm

    Triode

  • Sortie fag — 1700 MHz

    1700 MHz

    Triode

  • Entree fgk

    1000 MHz

    Triode

  • Chiffre de bruit (850 MHz)

    850 MHz

    Triode

  • Cag

    3.7 pF

    Triode

  • Ca (K+ f)

    55 mpF

    Triode

  • Tension de l'anode

    175 V

    Triode

  • l'anode

    2 W

    Triode

  • Courant cathodique

    13 mA

    Triode

  • Tension de la grille

    50 V

    Triode

  • grille

    1 Mohm

    Triode

  • cathode

    100 V

    Triode

  • (1) 0.5 MQ, avec polarisation automatique

    0.5 Mohm

    Triode

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

    180 mA

    Published heater rating

  • Amplification factor

    65

    GroundedGridRF

  • Plate resistance

    4300 ohm

    GroundedGridRF

  • Transconductance

    13500 µS

    GroundedGridRF

Other

  • Plate voltage

    160 V

    GroundedGridRF

  • Control-grid bias

    -1.25 V

    GroundedGridRF

  • Plate current

    12.5 mA

    GroundedGridRF

Data set 03

1963 Philips Electron Tubes Handbook V1a

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Plate voltage

    160 V

  • Grid voltage

    -1.3 V

  • Plate current

    12.5 mA

  • Maximum plate voltage

    175 V

  • Maximum plate dissipation

    2 W

Characteristic

  • Transconductance

    13500 uS

  • Amplification factor

    65

Capacitance

  • Grid-plate capacitance

    1.4 pF

  • Input capacitance

    3.3 pF

  • Output capacitance

    2.5 pF

Data set 04

1967 Mullard Receiving Tubes for Maintenance

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • and mixer at frequencies up to

    1000 MHz

    Published in approved EC88.pdf target datasheet; Section1

  • f 600

    1000 MHz

    Published in approved EC88.pdf target datasheet; Section1

  • la 12.5

    12.5 mA

    Published in approved EC88.pdf target datasheet; Section1

  • gm 13.5

    13.5 mA

    Published in approved EC88.pdf target datasheet; Section1

  • Power gain 18

    17.5 dB

    Published in approved EC88.pdf target datasheet; Section1

  • Noise factor (powe r matched) 9.0

    12.5 dB

    Published in approved EC88.pdf target datasheet; Section1

  • la

    9 mA

    Published in approved EC88.pdf target datasheet; Section1

  • gc

    54 mA

    Published in approved EC88.pdf target datasheet; Section1

  • Ik max

    13 mA

    Published in approved EC88.pdf target datasheet; Section1

Capacitance

  • ca-g+S

    1.7 pF

    Published in approved EC88.pdf target datasheet; Section1

  • Cg-k

    3.3 pF

    Published in approved EC88.pdf target datasheet; Section1

  • Ca-k

    0.045 pF

    Published in approved EC88.pdf target datasheet; Section1

  • Ch-k-'-g+S

    3.8 pF

    Published in approved EC88.pdf target datasheet; Section1

  • Ca-k+h

    0.055 pF

    Published in approved EC88.pdf target datasheet; Section1

Characteristic

  • la

    12.5 mA

    Published in approved EC88.pdf target datasheet; Section1

  • gm

    13.5 mA

    Published in approved EC88.pdf target datasheet; Section1

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

    165 mA

    Published nominal value

  • Transconductance

    13500 µS

    Published nominal or operating characteristic

  • Anode resonance frequency

    1700 MHz

    Input short-circuited

  • Noise resistance

    240 ohm

    Published equivalent noise resistance

Other

  • Maximum plate dissipation

    2 W

    Published maximum rating

Data set 06

1972 Philips Receiving Tubes

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Heater voltage V¢

    6.3 V

  • Heater current I

    165 mA