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Power - Pentode (NOT beam) ·Pentode

6P15

Power/output pentode designed for low-frequency or audio-frequency output amplification.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
B9A
Base pins
9
Nominal heater
6.3 V / 760 mA

Description

Output pentode for audio-frequency power amplification. Technical and descriptive data are taken from the supplied English-language Mazda/Thorn-AEI datasheet.

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
760 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
38000 Ω
Transconductance
0.0113 S
Amplification factor
19
Max plate voltage
300 V
Max screen voltage
300 V
Max plate dissipation
12 W
Max screen dissipation
2 W
Max cathode current
65 mA

Published electrical limits and characteristics promoted from the approved source.

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

1973 Mazda Valves Binder 2

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Heater Voltage Vh

    6.3 V

  • Heater Current Ih

    760 mA

  • Maximum Anode Voltage Va(max)

    300 V

  • Maximum Screen Voltage Vg2(max)

    300 V

  • Maximum Anode Dissipation Pa(max)

    12 W

  • Voltage d.c. Vh-k(max)

    100 V

Characteristic

  • Current Ik(av)max

    65 mA

  • * At Va = Vg2 = 250V. la = 48 mA. Vg1 = —

    73 V

  • Anode Supply Voltage Va(b)

    250 V

  • Screen Voltage (screen to earth) Vg2

    250 V

  • Anode Current (quiescent) la(o)

    48 mA

  • Screen Current (quiescent) 1g2(o)

    5.5 mA

  • Grid Bias Vg1

    7.3 V

  • Input Swing for 50mW (r.m.s.) 0.25

    34 V

  • Input Swing for 250mW (r.m.s.) 0.57

    0.75 V

  • Anode Supply Voltage Va(b)

    257 V

  • Screen Voltage (screen to earth) Vg2

    257 V

  • Anode Current (quiescent) la(o)

    49.5 mA

  • Screen Current (quiescent) 1g2(o)

    57 mA

  • Input Swing for 50mW (r.m.s.) 025

    0.34 V

  • Input Swing for 250mW (r.m.s.) 0.57

    75 V

  • (Vh=6 3V, Vg2=

    250 V

  • (Vgy=

    300 V

  • n II —

    11 A