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Power - Tetrode (NOT beam) ·Tetrode-Tetrode

QQE0312

Double tetrode designed for RF Class-C amplifier, oscillator, frequency-multiplier, and modulator service. Its paired tetrode sections support versatile high-frequency power applications.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
2
Base
-
Socket code
B9A
Base pins
9
Nominal heater
12.6 V / 410 mA

Description

Double tetrode for RF Class-C amplifier, oscillator, multiplier and modulator service.

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
12.6 V
Nominal heater current
410 mA
Parallel heater voltage
6.3 V
Parallel heater current
820 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

Tetrode

X-ray radiationInterelectrode capacitances
Transconductance
0.0033 S
Amplification factor
30
Max plate voltage
300 V
Max screen voltage
200 V
Max plate dissipation
7 W
Max screen dissipation
2 W
Max grid dissipation
0.2 W
Max cathode current
65 mA

Two electrically identical beam-tetrode sections compressed to one representative row; shared/common values are preserved in parameters.

Section 2

Tetrode

X-ray radiationInterelectrode capacitances
Transconductance
0.0033 S
Max plate voltage
300 V

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

195X Tesla

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Characteristics

  • Heater voltage

    6.3 V

    Published nominal value or midpoint of published range

  • Heater current

    820 mA

    Published nominal value or midpoint of published range

Data set 02

1963 Philips Electron Tubes Handbook V4

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Characteristic

  • Cathode: oxyde Vf

    12.6 V

    | Cathode: oxyde Vf = 6.3 12.6V'

  • Katode : Oxyd

    410 mA

    | Katode : Oxyd 0.41 A

  • zontally. it is recommanded that pins

    2 a

    Cooling | zontally. it is recommanded that pins 2 and 7 are

  • zontally. it is recommanded that pins

    7 a

    Cooling | zontally. it is recommanded that pins 2 and 7 are

  • ment. it es'_ recommande que les broches

    7 s

    Cooling | ment. it es'_ recommande que les broches 2 et 7 sont

  • ist. ward empfohlen die Stifte

    2 a

    Cooling | ist. ward empfohlen die Stifte 2 and 7 in einer

  • Published electrical value

    5.3 V

    Cooling | 1 )0ccasional operation at 5.3 V or 7.8 V (resp. 10.6 V or

  • Published electrical value

    7.8 V

    Cooling | 1 )0ccasional operation at 5.3 V or 7.8 V (resp. 10.6 V or

  • Published electrical value

    10.6 V

    Cooling | 1 )0ccasional operation at 5.3 V or 7.8 V (resp. 10.6 V or

  • Published electrical value

    15.6 V

    Cooling | 15.6 V) is acceptable. The tube may be used with

  • operation occassionelle

    5.3 V

    Cooling | operation occassionelle 5.3 V ou 7.8 V (10.6 ou 15.6

  • operation occassionelle

    7.8 V

    Cooling | operation occassionelle 5.3 V ou 7.8 V (10.6 ou 15.6

  • oder

    15.6 V

    Cooling | oder 15.6 V) 1st akzeptabel. Zur Verringerung des Heiz-

  • oder

    1 s

    Cooling | oder 15.6 V) 1st akzeptabel. Zur Verringerung des Heiz-

Capacitance

  • The tube is internally Ca

    2.6 pF

    Capacitances | The tube is internally Ca = 2.6 pF Co = 1 .4 pF

  • The tube is internally Ca

    4 pF

    Capacitances | The tube is internally Ca = 2.6 pF Co = 1 .4 pF

  • Published electrical value

    6.2 pF

    Capacitances | = 6.2 pF Ci = 5.1 pF

  • Published electrical value

    5.1 pF

    Capacitances | = 6.2 pF Ci = 5.1 pF

  • internement Caga <

    0.1 pF

    Capacitances | internement Caga < 0.1 pF

Other

  • Plate current

    30 mA

    Typical characteristics | µ52g.(Ia = 30 mA ) = 7.5

  • Plate current

    30 mA

    Typical characteristics | S (Ia = 30 mA ) = 3.3 mA/V

  • Plate current

    3.3 mA/V

    Typical characteristics | S (Ia = 30 mA ) = 3.3 mA/V

  • dans

    1 a

    Class C telegraphy | dans 1a charge

  • Plate voltage

    300 V

    Maximum ratings | Va = max. 300 V

  • Wa = max

    5 W

    Maximum ratings | Wa = max. 2x5 W

  • Wia = max

    11.25 W

    Maximum ratings | Wia = max.2x11.25 W

  • Ia max

    45 mA

    Maximum ratings | Ia max. 2x45 mA

  • Vga = max

    200 V

    Maximum ratings | Vga = max. 200 V

  • Wga = max

    1 W

    Maximum ratings | Wga = max. 2x1 W E-

  • max

    150 V

    Maximum ratings | = max. 150 V

  • Wg. = max

    0.2 W

    Maximum ratings | Wg. = max. 2x0.2 W

  • LW' = max

    3 mA

    Maximum ratings | LW' = max. 2x3 mA

  • Ik max

    50 mA

    Maximum ratings | Ik max. 2x50 mA

  • max

    225 mA

    Maximum ratings | = max. 225 mA

  • V~ max

    100 V

    Maximum ratings | V~ max. 100 V

  • f

    200 MHz

    Maximum ratings | f = 200 200 200 Mc/s

Data set 03

1966 Tesla Tubes

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Other

  • Series heater voltage

    12.6 V

    Series

  • Series heater current

    410 mA

    Series

  • Parallel heater voltage

    6.3 V

    Parallel

  • Parallel heater current

    820 mA

    Parallel

  • Maximum anode input power per section - CCS

    11.25 W

    CCS

  • Maximum anode dissipation per section - CCS

    5 W

    CCS

  • Maximum anode current per section - CCS

    45 mA

    CCS

  • Maximum anode input power per section - ICAS

    15 W

    ICAS

  • Maximum anode dissipation per section - ICAS

    7 W

    ICAS

  • Maximum anode current per section - ICAS

    55 mA

    ICAS

  • Maximum cathode current per section - ICAS

    65 mA

    ICAS

  • Maximum peak cathode current per section - ICAS

    300 mA

    ICAS

  • Maximum heater-cathode voltage

    100 V

  • Maximum frequency

    200 MHz

  • RF push-pull output power

    14.5 W

    ClassC PushPull CCS; 300 V, 200 MHz

  • RF push-pull output power

    18.5 W

    ClassC PushPull ICAS; 300 V, 200 MHz

Capacitance

  • Grid-screen/common capacitance

    6.2 pF

    Shared/representative

  • Anode capacitance

    2.6 pF

    Shared/representative

  • Anode-control-grid capacitance

    <0.1 pF

Characteristic

  • Characteristic anode voltage

    200 V

  • Characteristic screen voltage

    175 V

  • Characteristic control-grid voltage

    -13 V

  • Characteristic anode current

    30 mA

    Per section

  • Characteristic screen current

    8 mA

    Shared table

  • Transconductance

    3300 uS

  • Screen/control-grid factor

    7.5

Data set 04

1999 Philips E-Z

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Other

  • Cathode: oxyde Ve = 6,3

    12.6 V

    Modulator

  • Katode : Oxyd Ir - 0,82

    410 mA

    Modulator

  • Va = max

    300 V

  • Tia = max.2x1

    1.25 W

  • Vg = max

    150 v

  • Wery = max. 2x0,

    2 W

  • Ik = max, 2x5

    0 mA

  • kp = max

    225 mA

  • Yy = max

    100 v

  • £ = 200 200

    200 Mc/s

  • Vgr gy = 110 110

    115 v

  • Ia = 2%37,5 2x33,5% 2x3

    5 mA

  • Ig = 2,3 1,8

    2.2 ua

  • Ig = 2x0,9 2,2

    2.7 ma

  • Wg = 2x4 2%2,9 2x2,

    8 W

  • Wgz = 0.4 0,3

    0.33 W

  • Wigs = 2x0,05 0,12

    0.14 W

  • Wio = 1435 i

    8.4 W

  • Wo = 12 9

    7.4 W

  • Va = max,

    300 V

    PushPull

Capacitance

  • The tube [1]

    1 s

    PushPull

  • The tube [2]

    2.6 pF

    PushPull

  • Le tube est neutrodyné ©&

    6.2 pF

    PushPull

Characteristic

  • Hgagr (Ia

    30 ma

  • Iz

    30 ma

  • Temp. d'ampoule max [1]

    225 c

  • Temp. d'ampoule max [2]

    120 C

  • Occasional operation at [1]

    5.3 V

  • Occasional operation at [2]

    7.8 V

  • Occasional operation at [3]

    10.6 V

  • Shipping weight, poids brut, Bruttogewicht: 23 g

    15.6 V

  • Opération occassionelle & 5,3 Vou

    7.8 V

  • Celegentliche Wirkung bei [1]

    5.3 V

  • Celegentliche Wirkung bei [2]

    7.8 V

  • Celegentliche Wirkung bei [3]

    10.6 V

  • oder

    15.6 V