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Power - Triode ·Triode

F410

Early directly heated power triode intended for audio-output service. Approximately 25 W plate dissipation, moderate amplification factor, and several-hundred-volt plate capability provide substantial low-frequency output for early receiver and amplifier designs.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
B4
Base pins
4
Nominal heater
4 V / 2 A

Description

F410 is listed in the supplied valve table as a power triode. Published operating and characteristic values were transcribed from its target row.

Socket description

European 4-pin base

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
B4
Base pins
4
Nominal heater voltage
4 V
Nominal heater current
2 A
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
2500 Ω
Transconductance
0.004 S
Amplification factor
10
Max plate voltage
550 V
Max plate dissipation
25 W
Max cathode current
60 mA

Published target-row operating and characteristic values reviewed.

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

1938 Philips Miniwatt Vacuum Tube Catalog

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Plate voltage

    550 V

    Published table operating point

  • Plate current

    45 mA

    Published table operating point

  • Control-grid bias

    36 V

    Published table operating point

  • Power output

    5.9 W

    Published table operating point

  • Class-AB plate voltage

    550 V

    ClassAB TwoTubes

  • Class-AB plate current per tube

    20 mA

    ClassAB TwoTubes

  • Class-AB load resistance

    10000 ohm

    ClassAB TwoTubes

  • Class-AB power output

    14.6 W

    ClassAB TwoTubes

  • Alternate Class-AB plate current per tube

    45 mA

    ClassAB TwoTubes

  • Alternate Class-AB power output

    14.4 W

    ClassAB TwoTubes

Characteristic

  • Plate resistance

    7000 ohm

    Published table characteristic

  • Transconductance

    2500 µS

    Published table characteristic

  • Heater/filament voltage

    4 V

    Published heater/filament rating

  • Heater/filament current

    2 A

    Published heater/filament rating

Data set 02

1999 Philips E-Z

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • ‘Fension de chauffage

    40 V

    ‘Fension de chauffage .. 40V

  • Heizstrom ...............000a ca

    0 a

    Heizstrom ...............000a ca.

  • Courant de chauffage .. env

    2 A

    Courant de chauffage .. env. 2,0 A

  • Tension anodique

    550 V

    Tension anodique .. 550 V

  • Courant anodique normal

    45 mA

    Courant anodique normal ... 45 mA

  • Polarisation négative de grille env

    36 V

    Polarisation négative de grille env. 36 V

  • Inclinaison (max.)

    8 mA

    Inclinaison (max.) 8 mA/V

  • Inclinaison (norm.)

    4 mA

    Inclinaison (norm.) ....... 4 mA/V

  • Résistance intérieure (norm.)

    2500 Ohm

    Résistance intérieure (norm.) 2500 Ohm

  • Dissipation anodique

    25 W

    Dissipation anodique 25 W

  • PHILIPS

    206 a

    PHILIPS 206 amh

  • VF =40V

    40 V

    VF =40V

  • Vamax =550V

    550 V

    Vamax =550V

  • Snorm=4mA //4

    4 mA

    Snorm=4mA //4 80

  • Mazx. Anodenspannuag ....... e |74

    900 V

    Mazx. Anodenspannuag ....... e |74 900 V

  • V“L

    50 V

    ... V“L 5§50 V

  • Dissipation anodique max

    25 w

    Dissipation anodique max. 25w

  • Courant cathodique max. .............. I

    60 mA

    Courant cathodique max. .............. I 60 mA

  • Point de commenc. du courant de gnilc V

    -2 V

    Point de commenc. du courant de gnilc V.. -2V

  • Puissance utile ............ W (Vg eff

    2.5 V

    Puissance utile ............ W (Vg eff 2.5 V) 59 W

  • Puissance utile ............ W (Vg eff

    59 W

    Puissance utile ............ W (Vg eff 2.5 V) 59 W