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Voltage Triode Pentode ·Pentode-Triode

5AN8

Medium-mu triode plus sharp-cutoff pentode for television IF/video/AGC and oscillator, sync, phase-splitter, or reactance-tube circuits.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
2
Base
9DA
Socket code
B9A
Base pins
9
Nominal heater
4.7 V / 600 mA

Description

Medium-mu triode plus sharp-cutoff pentode for television IF/video/AGC and oscillator, sync, phase-splitter, and reactance-tube circuits.

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
9DA
Socket code
B9A
Base pins
9
Nominal heater voltage
4.7 V
Nominal heater current
600 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

9DA - Terminal pinout

Electrical assignments shared by every tube using this base designation.

TerminalSectionConnectionEvidence
PIN12PBP — Plate (Anode)

Chart transcription; manufacturer verification pending

Unverified

EIA Base Connections, printed page 131, 9DA

PIN22G1BG1 — Control Grid

Chart transcription; manufacturer verification pending

Unverified

EIA Base Connections, printed page 131, 9DA

PIN32KBK — Cathode

Chart transcription; manufacturer verification pending

Unverified

EIA Base Connections, printed page 131, 9DA

PIN4H—H — Heater

Chart transcription; manufacturer verification pending

Unverified

EIA Base Connections, printed page 131, 9DA

PIN5H—H — Heater

Chart transcription; manufacturer verification pending

Unverified

EIA Base Connections, printed page 131, 9DA

PIN61PAP — Plate (Anode)

Chart transcription; manufacturer verification pending

Unverified

EIA Base Connections, printed page 131, 9DA

PIN71G2AG2 — Screen Grid

Chart transcription; manufacturer verification pending

Unverified

EIA Base Connections, printed page 131, 9DA

PIN81G1AG1 — Control Grid

Chart transcription; manufacturer verification pending

Unverified

EIA Base Connections, printed page 131, 9DA

PIN91G3AG3 — Suppressor GridGroup 9DA9

Chart transcription; manufacturer verification pending

Unverified

EIA Base Connections, printed page 131, 9DA

PIN9ISAIS — Internal ScreenGroup 9DA9

Chart transcription; manufacturer verification pending

Unverified

EIA Base Connections, printed page 131, 9DA

PIN9KAK — CathodeGroup 9DA9

Chart transcription; manufacturer verification pending

Unverified

EIA Base Connections, printed page 131, 9DA

Section ratings

2 physical sections, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
5750 Ω
Transconductance
0.0033 S
Amplification factor
19
Max plate voltage
200 V
Max plate dissipation
2.6 W

Medium-mu triode section.

Section 2

Pentode

X-ray radiationInterelectrode capacitances
Plate resistance
300000 Ω
Transconductance
0.0062 S
Max plate voltage
200 V
Max screen voltage
300 V
Max plate dissipation
2 W
Max screen dissipation
0.5 W

Sharp-cutoff pentode section.

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

1950 Sylvania

Published operating points and test conditions from this source.

SECTION 1

Triode

Application

  • Primary application

    Low-frequency oscillator

SECTION 2

Pentode

Application

  • Primary application

    Video amplifier

Data set 02

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Plate voltage

    100 V

    ClassA

SECTION 2

Pentode

Other

  • Plate voltage

    100 V

    ClassA

Data set 03

1965 Westinghouse Data Book

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Triode typical plate voltage

    125 V

  • Heater-cathode voltage maximum

    200 V

Characteristics

  • Triode transconductance

    7500 uS

  • Triode amplification factor

    21

  • Triode plate resistance

    5500 ohm

  • Heater warm-up time

    11 s

Application

  • Application

    Oscillator / phase inverter / vertical oscillator

SECTION 2

Pentode

Other

  • Pentode/tetrode typical plate voltage

    125 V

  • Pentode/tetrode grid2 voltage

    125 V

Characteristics

  • Pentode/tetrode transconductance

    7500 uS

  • Pentode/tetrode plate resistance

    500000 ohm

Application

  • Application

    Mixer / IF / video / general-purpose amplifier

Data set 04

1966 Tung Sol Electronic Tubes 1 of 4

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

  • IN ONE ENVELOPE. IT IS DESIGNED FOR USE IN

    600 mA

    | IN ONE ENVELOPE. IT IS DESIGNED FOR USE IN 600 MA. SERIES HEATER

  • GRID TO PLATE

    1.5 ΜΜF

    Triode Unit | GRID TO PLATE 1.5 µµf

  • HEATER WARM— UP TIME (APPROX.)*

    11 s

    ClassA | HEATER WARM— UP TIME (APPROX.)* 11.0 SEC.

Other

  • MAXIMUM GRID #

    5 W

    ClassA | MAXIMUM GRID #2 INPUT --- O.5 WATT

  • HEATER VOLTAGE ~

    7 V

    Typical Operating Conditions | HEATER VOLTAGE ~.7 VOLTS

  • HEATER CURRENT

    600 mA

    Typical Operating Conditions | HEATER CURRENT 0.6 AMP.

  • PLATE SUPPLY VOLTAGE

    200 V

    Typical Operating Conditions | PLATE SUPPLY VOLTAGE 200 200 VOLTS

  • GRID #

    150 V

    Typical Operating Conditions | GRID #2 SUPPLY VOLTAGE --- 150 VOLTS

  • PLATE RESISTANCE (APPROX.)

    0 ohm

    Typical Operating Conditions | PLATE RESISTANCE (APPROX.) 5 750 300 000 OHMS

  • TRANSCONDUCTA NCE

    200 ΜMHOS

    Typical Operating Conditions | TRANSCONDUCTA NCE 3 300 6 200 µMHos

  • PLATE CURRENT

    9.5 mA

    Typical Operating Conditions | PLATE CURRENT 13 9.5 MA.

SECTION 2

Pentode

Characteristic

  • GRID #

    0.04 ΜΜF

    Pentode Unit | GRID #1 TO PLATE (MAX.) 0.04 µµf

  • TRIODE GRID TO PENTODE PLATE

    0.005 ΜΜF

    Pentode Unit | TRIODE GRID TO PENTODE PLATE 0.005 µµf

  • P ENTOOE GRID #

    0.006 ΜΜF

    Pentode Unit | P ENTOOE GRID #1 TO TRIODE PLATE 0.006 µµf

  • PENTODE PLATc TO TRIODE PLATE

    0.045 ΜΜF

    Pentode Unit | PENTODE PLATc TO TRIODE PLATE 0.045 µµf

Data set 05

1971 RCA HB3 Binder 4 of 7

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Plate voltage

    150 V

    ClassA1

  • Grid voltage

    -3 V

    ClassA1

  • Plate current

    15 mA

    ClassA1

Characteristic

  • Plate resistance

    4700 ohm

    ClassA1

  • Transconductance

    4500 uS

    ClassA1

  • Heater warm-up time

    11 s

    ControlledWarmUp

SECTION 2

Pentode

Other

  • Plate voltage

    125 V

    ClassA1

  • Grid 2 voltage

    125 V

    ClassA1

  • Cathode resistor

    56 ohm

    ClassA1

  • Plate current

    12 mA

    ClassA1

  • Grid 2 current

    3.8 mA

    ClassA1

Characteristic

  • Plate resistance

    170000 ohm

    ClassA1

  • Transconductance

    7800 uS

    ClassA1

Data set 06

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Heater Voltage (ac/dc) 4.7

    6.3 V

    Published in approved 6AN8A target entry; Section1

  • Heater Current O.G

    450 mA

    Published in approved 6AN8A target entry; Section1

  • Heater Warm-up Time (Average) 11

    11 seconds

    Published in approved 6AN8A target entry; Section1

  • Pentode Plate to Triode Plate

    0.15 pF

    Published in approved 6AN8A target entry; Section1

  • Plate Voltage 330

    330 V

    Published in approved 6AN8A target entry; Section1

  • Grid-No.2 Supply Voltage

    330 V

    Published in approved 6AN8A target entry; Section1

  • Grid-No.l (Control-Grid) Voltage, Positive-bias value 0

    0 V

    Published in approved 6AN8A target entry; Section1

  • Plate Dissipation 2.8

    2.3 W

    Published in approved 6AN8A target entry; Section1

  • For grid-No. 2 voltages up to

    165 V

    Published in approved 6AN8A target entry; Section1

  • For grid-No. 2 voltages up to 165 volts

    0.55 W

    Published in approved 6AN8A target entry; Section1

  • For grid-No. 2 voltages between 165 and

    330 V

    Published in approved 6AN8A target entry; Section1

  • For fixed-bias operation 0.5

    0.25 MΩ

    Published in approved 6AN8A target entry; Section1

  • For cathode-bias operation 1

    1 MΩ

    Published in approved 6AN8A target entry; Section1

  • GRID-No

    2 V

    Published in approved 6AN8A target entry; Section1

  • Heater Voltage (ac/dc) 4.7 6.3

    12.6 V

    Published in approved 6AN8A target entry; Section1

  • Heater Current 0.6 0.45

    225 mA

    Published in approved 6AN8A target entry; Section1

Capacitance

  • Grid to Cathode and Heater

    2 pF

    Published in approved 6AN8A target entry; Section1

  • Plate to Cathode and Heater

    0.26 pF

    Published in approved 6AN8A target entry; Section1

  • Internal Shield

    7 pF

    Published in approved 6AN8A target entry; Section1

  • Internal Shield

    2.4 pF

    Published in approved 6AN8A target entry; Section1

  • Triode Grid to Pentode Plate

    0.02 pF

    Published in approved 6AN8A target entry; Section1

  • Pentode Grid No.l to Triode Plate

    0.02 pF

    Published in approved 6AN8A target entry; Section1

  • Grid No.l to Plate

    0.4 pF

    Published in approved 6AN8A target entry; Section1

  • Grid No.l to Cathode, Heater, Grid No.2, and Grid No.3

    8 pF

    Published in approved 6AN8A target entry; Section1

  • Plate to Cathode, Heater, Grid No.2, and Grid No

    3 pF

    Published in approved 6AN8A target entry; Section1

Characteristic

  • Plate Supply Voltage 150

    125 V

    Published in approved 6AN8A target entry; Section1

  • Grid-No.2 Supply Voltage

    125 V

    Published in approved 6AN8A target entry; Section1

  • Cathode-Bias Resistor

    56 Ω

    Published in approved 6AN8A target entry; Section1

  • Plate Resistance (Approx.) 4700

    170000 Ω

    Published in approved 6AN8A target entry; Section1

  • Plate Current 15

    12 mA

    Published in approved 6AN8A target entry; Section1

  • Grid-No.2 Current

    3.8 mA

    Published in approved 6AN8A target entry; Section1

  • 20 iiA —17

    -6 V

    Published in approved 6AN8A target entry; Section1

  • 1.6 mA

    -3 V

    Published in approved 6AN8A target entry; Section1

SECTION 2

Pentode

Other

  • Heater Voltage (ac/dc) 4.7

    6.3 V

    Published in approved 6AN8A target entry; Section2

  • Heater Current O.G

    450 mA

    Published in approved 6AN8A target entry; Section2

  • Heater Warm-up Time (Average) 11

    11 seconds

    Published in approved 6AN8A target entry; Section2

  • Pentode Plate to Triode Plate

    0.15 pF

    Published in approved 6AN8A target entry; Section2

  • Plate Voltage 330

    330 V

    Published in approved 6AN8A target entry; Section2

  • Grid-No.2 Supply Voltage

    330 V

    Published in approved 6AN8A target entry; Section2

  • Grid-No.l (Control-Grid) Voltage, Positive-bias value 0

    0 V

    Published in approved 6AN8A target entry; Section2

  • Plate Dissipation 2.8

    2.3 W

    Published in approved 6AN8A target entry; Section2

  • For grid-No. 2 voltages up to

    165 V

    Published in approved 6AN8A target entry; Section2

  • For grid-No. 2 voltages up to 165 volts

    0.55 W

    Published in approved 6AN8A target entry; Section2

  • For grid-No. 2 voltages between 165 and

    330 V

    Published in approved 6AN8A target entry; Section2

  • For fixed-bias operation 0.5

    0.25 MΩ

    Published in approved 6AN8A target entry; Section2

  • For cathode-bias operation 1

    1 MΩ

    Published in approved 6AN8A target entry; Section2

  • GRID-No

    2 V

    Published in approved 6AN8A target entry; Section2

  • Heater Voltage (ac/dc) 4.7 6.3

    12.6 V

    Published in approved 6AN8A target entry; Section2

  • Heater Current 0.6 0.45

    225 mA

    Published in approved 6AN8A target entry; Section2

Capacitance

  • Grid to Cathode and Heater

    2 pF

    Published in approved 6AN8A target entry; Section2

  • Plate to Cathode and Heater

    0.26 pF

    Published in approved 6AN8A target entry; Section2

  • Internal Shield

    7 pF

    Published in approved 6AN8A target entry; Section2

  • Internal Shield

    2.4 pF

    Published in approved 6AN8A target entry; Section2

  • Triode Grid to Pentode Plate

    0.02 pF

    Published in approved 6AN8A target entry; Section2

  • Pentode Grid No.l to Triode Plate

    0.02 pF

    Published in approved 6AN8A target entry; Section2

  • Grid No.l to Plate

    0.4 pF

    Published in approved 6AN8A target entry; Section2

  • Grid No.l to Cathode, Heater, Grid No.2, and Grid No.3

    8 pF

    Published in approved 6AN8A target entry; Section2

  • Plate to Cathode, Heater, Grid No.2, and Grid No

    3 pF

    Published in approved 6AN8A target entry; Section2

Characteristic

  • Plate Supply Voltage 150

    125 V

    Published in approved 6AN8A target entry; Section2

  • Grid-No.2 Supply Voltage

    125 V

    Published in approved 6AN8A target entry; Section2

  • Cathode-Bias Resistor

    56 Ω

    Published in approved 6AN8A target entry; Section2

  • Plate Resistance (Approx.) 4700

    170000 Ω

    Published in approved 6AN8A target entry; Section2

  • Plate Current 15

    12 mA

    Published in approved 6AN8A target entry; Section2

  • Grid-No.2 Current

    3.8 mA

    Published in approved 6AN8A target entry; Section2

  • 20 iiA —17

    -6 V

    Published in approved 6AN8A target entry; Section2

  • 1.6 mA

    -3 V

    Published in approved 6AN8A target entry; Section2