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Voltage Pentode - Sharp Cutoff (single) ·Pentode

6CE5

Sharp-cutoff high-frequency pentode for compact RF and IF equipment operating to approximately 400 MHz.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
7BD
Socket code
B7G
Base pins
7
Nominal heater
6.3 V / 300 mA

Description

Sharp-cutoff pentode used as an RF or IF amplifier in compact radio equipment at frequencies up to 400 MHz.

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
300 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
300000 Ω
Transconductance
0.0076 S
Max plate voltage
300 V
Max screen voltage
300 V
Max plate dissipation
2 W
Max screen dissipation
0.5 W

Wide-band amplifier

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

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Heater voltage

    6.3 V

  • Heater current

    300 mA

  • Plate voltage

    200 V

    Typical operating conditions

  • Screen voltage

    125 V

    Typical operating conditions

  • Plate current

    11 mA

    Typical operating conditions

Data set 02

1966 Tung Sol Electronic Tubes 2 of 4

Published operating points and test conditions from this source.

SECTION 1

Pentode

Capacitance

  • Grid-to-plate capacitance

    0.03 pF

  • Input capacitance

    6.5 pF

  • Output capacitance

    1.9 pF

Other

  • Heater warm-up time

    11 s

  • Plate voltage

    125 V

    ClassA

  • Screen voltage

    125 V

    ClassA

  • Grid #1 supply voltage

    -1 V

    ClassA

  • Grid #1 resistor

    1 megohm

    ClassA

  • Plate current

    11 mA

    ClassA

  • Screen current

    2.8 mA

    ClassA

Characteristic

  • Grid #1 voltage at 35 uA plate current

    -5 V

Data set 03

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • rf or if amplifier at frequencies up to

    400 MHz

    Published in approved 6CE5 target datasheet entry; Section1

  • Heater Voltage (ac/dc) 3.15

    6.3 V

    Published in approved 6CE5 target datasheet entry; Section1

  • Heater Current 0.6

    300 mA

    Published in approved 6CE5 target datasheet entry; Section1

  • Heater Warm-up Time (Average)

    11 seconds

    Published in approved 6CE5 target datasheet entry; Section1

  • Grid-No.l (Control-Grid) Voltage, Positive-bias value. 0.006 0

    0 V

    Published in approved 6CE5 target datasheet entry; Section1

  • For grid-No.2 voltages up to

    150 V

    Published in approved 6CE5 target datasheet entry; Section1

  • For grid-No.2 voltages between 160 and

    300 V

    Published in approved 6CE5 target datasheet entry; Section1

Capacitance

  • Internal Shield

    6.5 pF

    Published in approved 6CE5 target datasheet entry; Section1

  • Shield

    1.8 pF

    Published in approved 6CE5 target datasheet entry; Section1

  • Grid No.l to Plate and Grid No.2

    2.5 pF

    Published in approved 6CE5 target datasheet entry; Section1

  • Grid No.l to Cathode, Heater, Grid No.3, and Internal Shield

    3.9 pF

    Published in approved 6CE5 target datasheet entry; Section1

Characteristic

  • Cathode-Bias Resistor 820 180 100

    180 Ω

    Published in approved 6CE5 target datasheet entry; Section1

  • Plate Resistance (Appro*.) 0.009 0.6 0.5

    0.8 MΩ

    Published in approved 6CE5 target datasheet entry; Section1

  • Transconductance 4400 4900 6100

    6700 µS

    Published in approved 6CE5 target datasheet entry; Section1

  • Plate Current 8 6 4.7 8

    7.6 mA

    Published in approved 6CE5 target datasheet entry; Section1

  • Grid-No.2 Current — — 1.4 2.4

    2.1 mA

    Published in approved 6CE5 target datasheet entry; Section1