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Voltage Pentode - Sharp Cutoff (single) ·Pentode

E90F

Shock- and vibration-resistant sharp-cutoff high-frequency pentode documented by Amperex and Philips. It combines fixed-gain HF amplification with rugged special-quality construction for demanding professional service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
B9A
Base pins
9
Nominal heater
6.3 V / 150 mA

Description

E90F is listed in the supplied Amperex material as a shock- and vibration-resistant sharp-cutoff HF pentode. Published ratings and characteristics were captured from the supplied table.

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
-
Socket code
B9A
Base pins
9
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

Pentode

X-ray radiationInterelectrode capacitances
Plate resistance
1300000 Ω
Transconductance
0.0046 S
Amplification factor
50
Max plate voltage
330 V
Max screen voltage
150 V

Special-quality long-life premium pentode for professional high-frequency and amplifier service.

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

1963 Amperex Condensed

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristic

  • Heater voltage

    6.3 V

    Published rating

  • Heater current

    150 mA

    Published rating

  • Amplification/characteristic value

    50

    MobileHF

  • Transconductance

    4600 µS

    MobileHF

  • Plate resistance

    1300000 ohm

    MobileHF

Other

  • Plate voltage

    250 V

    MobileHF

  • Plate current

    7.4 mA

    MobileHF

  • Screen voltage

    150 V

    MobileHF

  • Screen current

    2.9 mA

    MobileHF

Data set 02

1963 Philips Electron Tubes Handbook V1a

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Plate voltage

    250 V

  • Screen voltage

    150 V

Characteristic

  • Plate current

    2.2 to 3.6 mA

  • Transconductance

    3500 to 5700 uS

  • Plate resistance

    0.25 MOhm

  • Cutoff grid voltage

    -6.5 V

Capacitance

  • Plate capacitance

    3.6 to 4.8 pF

  • Grid capacitance

    4.4 to 5.6 pF

Data set 03

1963 Philips Electron Tubes Handbook V3

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristic

  • Heater voltage

    6.3 V

    Published heater rating

  • Heater current

    150 mA

    Published heater rating

Other

  • Plate supply voltage

    250 V

    MobileHF

  • Screen voltage

    150 V

    MobileHF

  • Plate current

    7.4 mA

    MobileHF

  • Screen current

    2.9 mA

    MobileHF

Capacitance

  • Plate capacitance

    4.2 pF

    Published

  • Input capacitance

    5 pF

    Published

  • Grid-to-plate capacitance

    0.0035 pF

    Published

Data set 04

1999 Philips E-Z

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristic

  • alimentation série ou pa- Ir =

    150 mA

    Published datasheet value

  • Chauffage: indirect par C.A. ou C.C. Ve =

    6.3 V

    Published datasheet value

  • Ca ') =

    -5 pF

    Published datasheet value

  • Cag|

    0.0035 pF

    Published datasheet value

  • Vg3 =

    150 V

    Published datasheet value

  • Vg1 =

    4.6 mA

    Published datasheet value

  • Vba =

    250 V

    Published datasheet value

  • Vbgz =

    0.5 pA

    Published datasheet value

  • Ca!) =

    -4.8 pF

    Published datasheet value

  • Cag1') = | <

    0.0035 pF

    Published datasheet value

  • Ves =

    150 V

    Published datasheet value

  • Ve =

    4.6 mA

    Published datasheet value

  • Vg3 =

    2.5 kQ

    Published datasheet value

  • Ia =

    101 pA

    Published datasheet value

  • Ve =

    5 V

    Published datasheet value

  • Vva =

    100 Q

    Published datasheet value

  • Vogz =

    0.5 µA

    Published datasheet value

  • s =

    4 mA/V

    Published datasheet value

  • Cal) =

    -4.8 pF

    Published datasheet value

  • Cag1') = | <

    6.0035 pF

    Published datasheet value

  • Ia | <

    3.2 mA/V

    Published datasheet value

  • Vg1 =

    1 V

    Published datasheet value

  • Vbgz =

    0.5 µA

    Published datasheet value

  • s =

    4 mA

    Published datasheet value

  • Life expectancy

    1000 h

    Published datasheet value

  • Ve =

    63 V

    Published datasheet value

  • Vpa =

    250 V

    Published datasheet value

  • Vgs = OV Ver (k neg) =

    135 V

    Published datasheet value

  • Vpge =

    150 V

    Published datasheet value

  • Vibrational forces for a periocd of

    32 h

    Published datasheet value

  • Ve =

    6.3 V

    Published datasheet value

  • Vgz = OV Vkr (k neg) =

    135 V

    Published datasheet value

  • Vitrational forces for a period of

    32 h

    Published datasheet value

  • Vba =

    2 kQ

    Published datasheet value

  • Vpgza =

    100 Q

    Published datasheet value

  • Ves = ov Ck =

    1000 pF

    Published datasheet value

  • Vag = max

    600 V

    Published datasheet value

  • Va = max

    557 V

    Published datasheet value

  • B = max

    15 mA

    Published datasheet value

  • Vg2o = max

    100 V

    Published datasheet value

  • Rg; en polarisation fixe max

    0.5 MQ

    Published datasheet value

  • Rg1 en polarisation automatique = max

    1 MQ

    Published datasheet value

  • Vpgz =

    100 Q

    Published datasheet value

  • Vag = max,

    600 V

    Published datasheet value

  • Wa = max

    15 mA

    Published datasheet value

  • Vg2p = max

    100 V

    Published datasheet value

  • Rg en polarisation fixe max

    0.5 MQ

    Published datasheet value

  • ) The value of

    135 V

    Published datasheet value

  • La valeur de

    135 V

    Published datasheet value

  • Der Wert von

    135 V

    Published datasheet value

  • The value of

    135 V

    Published datasheet value

  • Vo3=

    0 V

    Published datasheet value