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Voltage Pentode - Sharp Cutoff (single) ·Pentode

6AK5W

Ruggedized special-quality sharp-cutoff pentode for wideband radar, RF, and IF amplification in military and airborne equipment.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
7BD
Socket code
B7G
Base pins
7
Nominal heater
6.3 V / 175 mA

Description

Ruggedized sharp-cutoff miniature pentode characterized by low heater power, high transconductance and low capacitances for high-frequency wide-band radar and IF service in military and industrial airborne equipment.

Socket description

Miniature 7-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
7BD
Socket code
B7G
Base pins
7
Nominal heater voltage
6.3 V
Nominal heater current
175 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

7BD - Terminal pinout

Electrical assignments shared by every tube using this base designation.

TerminalSectionConnectionEvidence
PIN1G1AG1 — Control Grid

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 128, 7BD

PIN2G3AG3 — Suppressor GridGroup 7BD2

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 128, 7BD

PIN2ISAIS — Internal ScreenGroup 7BD2

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 128, 7BD

PIN2KAK — CathodeGroup 7BD2

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 128, 7BD

PIN3H—H — Heater

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 128, 7BD

PIN4H—H — Heater

EIA transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 128, 7BD

PIN5PAP — Plate (Anode)

EIA chart transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 128, 7BD

PIN6G2AG2 — Screen Grid

EIA chart transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 128, 7BD

PIN7G3AG3 — Suppressor GridGroup 7BD7

EIA chart transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 128, 7BD

PIN7ISAIS — Internal ScreenGroup 7BD7

EIA chart transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 128, 7BD

PIN7KAK — CathodeGroup 7BD7

EIA chart transcription; manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 128, 7BD

Section ratings

1 physical section, each with unique specifications.

Section 1

Pentode

X-ray radiationInterelectrode capacitances
Plate resistance
340000 Ω
Transconductance
0.005 S
Max plate voltage
120 V
Max screen voltage
120 V
Max plate dissipation
1.65 W
Max screen dissipation
0.55 W
Max cathode current
20 mA

Promoted only from clearly identified printed ratings/characteristics; additional published operating points retained in TUBE_SECTION_PARAMETER.

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

1958 Compagnie General

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristic

  • Operating Frequency Maximum

    400 MHz

  • Plate Resistance

    500000 ohm

  • Transconductance

    5100 uS

Other

  • Plate Dissipation

    1.65 W

Data set 02

195X Raytheon Special Purpose Tubes

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Control-grid voltage

    -2 V

    RFAmplifier

  • Plate voltage

    120 V

    RFAmplifier

  • Screen voltage

    120 V

    RFAmplifier

  • Plate current

    7.5 mA

    RFAmplifier

  • Screen current

    2.5 mA

    RFAmplifier

Characteristic

  • Plate resistance

    340000 Ω

    Section1

  • Transconductance

    5000 µS

    Section1

Data set 03

1966 Tung Sol Electronic Tubes 3 of 4

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristics

  • Plate resistance

    340000 ohm

    PromotedValue

  • Transconductance

    0.0051 A/V

    PromotedValue

  • HEATER VOLTAGE — published value 1

    6 VOLTS

    OCR table transcription; verify against supplied datasheet layout where multiple columns represent operating conditions.

  • HEATER VOLTAGE — published value 2

    1 VOLTS

    OCR table transcription; verify against supplied datasheet layout where multiple columns represent operating conditions.

  • NEATER VOLTAGE

    6 VOLTS

    OCR table transcription; verify against supplied datasheet layout where multiple columns represent operating conditions.

  • NEATER CURRENT

    0.175 AMP

    OCR table transcription; verify against supplied datasheet layout where multiple columns represent operating conditions.

  • PLATE VOLTAGE

    120 VOLT

    OCR table transcription; verify against supplied datasheet layout where multiple columns represent operating conditions.

  • GRID 1F2 VOLTAGE — published value 1

    2 VOLTS

    OCR table transcription; verify against supplied datasheet layout where multiple columns represent operating conditions.

  • GRID 1F2 VOLTAGE — published value 2

    120 VOLTS

    OCR table transcription; verify against supplied datasheet layout where multiple columns represent operating conditions.

  • CATHODE BIAS RESISTOR B

    200 OHMS

    OCR table transcription; verify against supplied datasheet layout where multiple columns represent operating conditions.

  • PLATE RESISTANCE (APPROX.)

    4 MEGOHM

    OCR table transcription; verify against supplied datasheet layout where multiple columns represent operating conditions.

  • TRANSCONDUC TA HCE

    5000

    OCR table transcription; verify against supplied datasheet layout where multiple columns represent operating conditions.

  • PLATE CURRENT

    7.5 mA

    OCR table transcription; verify against supplied datasheet layout where multiple columns represent operating conditions.

  • GR I~D ~E2 CURRENT — published value 1

    2 mA

    OCR table transcription; verify against supplied datasheet layout where multiple columns represent operating conditions.

  • GR I~D ~E2 CURRENT — published value 2

    2.5 mA

    OCR table transcription; verify against supplied datasheet layout where multiple columns represent operating conditions.

  • GRID Ni VOLTAGE (APPR Ox,) Ip=10 µa — published value 1

    10

    OCR table transcription; verify against supplied datasheet layout where multiple columns represent operating conditions.

  • GRID Ni VOLTAGE (APPR Ox,) Ip=10 µa — published value 2

    -12

    OCR table transcription; verify against supplied datasheet layout where multiple columns represent operating conditions.

  • HEATER CURRENT — published value 1

    160 mA

    OCR table transcription; verify against supplied datasheet layout where multiple columns represent operating conditions.

  • HEATER CURRENT — published value 2

    190 mA

    OCR table transcription; verify against supplied datasheet layout where multiple columns represent operating conditions.

  • PLATE CURRENT (1) — published value 1

    4.5 mAdC

    OCR table transcription; verify against supplied datasheet layout where multiple columns represent operating conditions.

  • PLATE CURRENT (1) — published value 2

    11 mAdC

    OCR table transcription; verify against supplied datasheet layout where multiple columns represent operating conditions.

  • TRANSCONOUC TA NCE (i) — published value 1

    3751 µMHOS

    OCR table transcription; verify against supplied datasheet layout where multiple columns represent operating conditions.

  • TRANSCONOUC TA NCE (i) — published value 2

    6250 µMHOS

    OCR table transcription; verify against supplied datasheet layout where multiple columns represent operating conditions.

  • SCREEN CURRENT — published value 1

    1.3 mAdc

    OCR table transcription; verify against supplied datasheet layout where multiple columns represent operating conditions.

  • SCREEN CURRENT — published value 2

    3.2 mAdc

    OCR table transcription; verify against supplied datasheet layout where multiple columns represent operating conditions.

  • PLATE CURRENT (3)

    3

    OCR table transcription; verify against supplied datasheet layout where multiple columns represent operating conditions.

  • TRANSCONDUCTANCE (2)D

    2

    OCR table transcription; verify against supplied datasheet layout where multiple columns represent operating conditions.

  • GRID CURRENT (2)E

    2

    OCR table transcription; verify against supplied datasheet layout where multiple columns represent operating conditions.

Other

  • Maximum plate voltage

    200 V

    PromotedValue

  • Maximum screen voltage

    155 V

    PromotedValue

  • Maximum plate dissipation

    1.65 W

    PromotedValue

  • Maximum screen dissipation

    0.55 W

    PromotedValue

  • Maximum cathode current

    20 mA

    PromotedValue

  • MAXIMUM DC PLATE VOLTAGE

    2

    OCR table transcription; verify against supplied datasheet layout where multiple columns represent operating conditions.

  • MAXIMUM OC GRID M2 VOLTAGE — published value 1

    2 VOLTS

    OCR table transcription; verify against supplied datasheet layout where multiple columns represent operating conditions.

  • MAXIMUM OC GRID M2 VOLTAGE — published value 2

    155 VOLTS

    OCR table transcription; verify against supplied datasheet layout where multiple columns represent operating conditions.

  • MAXIMUM PLATE DISSIPATION

    1.65 WATTS

    OCR table transcription; verify against supplied datasheet layout where multiple columns represent operating conditions.

  • MAXIMUM HEATER CATHODE VOLTAGE

    130 VOLTS

    OCR table transcription; verify against supplied datasheet layout where multiple columns represent operating conditions.

  • MAXIMUM GRID ,Y2 DISSIPATION — published value 1

    2 WATT

    OCR table transcription; verify against supplied datasheet layout where multiple columns represent operating conditions.

  • MAXIMUM GRID ,Y2 DISSIPATION — published value 2

    0.55 WATT

    OCR table transcription; verify against supplied datasheet layout where multiple columns represent operating conditions.

  • MAXIMUM BULB TEMPERATURE

    165

    OCR table transcription; verify against supplied datasheet layout where multiple columns represent operating conditions.