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Voltage Pentode - Sharp Cutoff (single) ·Pentode

6KY6

Exceptionally high-transconductance sharp-cutoff pentode with 9 W plate dissipation for demanding Class-A wideband amplifier service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
B9A
Base pins
9
Nominal heater
6.3 V / 520 mA

Description

Sharp-cutoff pentode for high-transconductance Class A amplifier service. Published data include max plate 330 V; gm about 30,000 µS.

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
6.3 V
Nominal heater current
520 mA
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

Pentode

X-ray radiationInterelectrode capacitances
Plate resistance
40000 Ω
Transconductance
0.03 S
Max plate voltage
330 V
Max screen voltage
330 V
Max plate dissipation
9 W
Max screen dissipation
1 W

Representative electrical section from supplied RCA data sheet.

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

1971 RCA HB3 Binder 5 of 7

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Heater voltage nominal

    6.3 V

  • Heater current

    520 mA

  • Plate Voltage Eb

    330 V

    Published source row

  • Grid-No

    2

    Published source row

  • Supply Voltage E c2

    330 V

    Published source row

  • Grid-No

    2

    Published source row

  • Grid-No (value 2)

    2

    Published source row

  • Heater Voltage (AC or DC) Eh

    5.7 V

    Published source row

  • Heater Voltage (AC or DC) Eh (value 2)

    6.9 V

    Published source row

  • Grid-No

    2

    Published source row

  • Plate Dissipation. Pb

    9 W

    Published source row

Characteristics

  • Heater Voltage (AC or DC) Eh

    6.3 V

    Published source row

  • Heater Current. Ih

    520 mA

    Published source row

  • Plate Resistance (Approx.) r

    40

    Published source row

  • Transconductance gm

    30000 µS

    Published source row

  • DC Plate Current Ib

    30 mA

    Published source row

  • DC Grid-No

    2 mA

    Published source row

  • DC Grid-No (value 2)

    5.2 mA

    Published source row

  • Cutoff DC Grid-No. l Voltage. Ecl(co)

    -4.5 V

    Published source row

  • Plate Supply Voltage Ebb

    200 V

    Published source row

  • Grid-No

    2 V

    Published source row

  • Grid-No (value 2)

    135 V

    Published source row

  • Grid-No. l Supply Voltage E cl

    0 V

    Published source row

  • Cathode Resistor ~k

    47

    Published source row

  • PLATE (Ib1

    0

    Published source row

  • PLATE (Ib1 (value 2)

    2

    Published source row

  • PLATE (Ip) OR GRID-No

    2

    Published source row

Capacitance

  • Grid No

    1 pF

    Published source row

  • Grid No (value 2)

    0.16 pF

    Published source row