5KZ8

Combination triode and beam-power section designed as an oscillator and mixer in VHF color and black-and-white television receivers.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: -
Socket code: -
Base pins: 9
Nominal heater: 5 V / 600 mA

Description

Miniature type used as combined oscillator and mixer in vhf color and black-and-white television receivers. Outlines section, 6B; requires miniature 9-contact socket. Types 5KZ8 and 9KZ8 are identical with type 6KZ8 except for heater ratings. : : 352 RCA Receiving Tube Manual 5KZ8 6KZ8 9KZ8

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: -
Base pins: 9
Nominal heater voltage: 5 V
Nominal heater current: 600 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

2 physical sections, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances

Plate resistance: 5400 Ω
Transconductance: 0.0085 S
Amplification factor: 46
Max plate voltage: 330 V
Max plate dissipation: 2.5 W

Heater-variant/reference sheet: complete electrical characteristics explicitly referenced to 6KZ8/9KZ8; values not imported from outside approved source.

Section 2

Beam Power

X-ray radiationInterelectrode capacitances

Plate resistance: 200000 Ω
Transconductance: 0.0075 S
Amplification factor: 46
Max plate voltage: 330 V
Max screen voltage: 330 V
Max plate dissipation: 2.5 W
Max screen dissipation: 0.55 W

Heater-variant/reference sheet: complete electrical characteristics explicitly referenced to 6KZ8/9KZ8; values not imported from outside 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

1950 Sylvania

Published operating points and test conditions from this source.

SECTION 1

Triode

Application

Service
VHF oscillator and mixer

Data set 02

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

Plate Dissipation
12 watts
Published value from supplied target entry
Grid-No
1.9 watts
Published value from supplied target entry
Heater Voltage (ac/dc)
9.45 volts
Published value from supplied target entry
Heater Current
0.3 ampere
Published value from supplied target entry
Heater Warm-up Time (Average)
11 seconds
Published value from supplied target entry
Plate Voltage
330 volts
Published value from supplied target entry
Grid-No
330 volts
Published value from supplied target entry
Grid-No
300
Published value from supplied target entry
Grid No.l (Control-Grid) Voltage, Positive-bias value
0 volts
Published value from supplied target entry
Plate Dissipation
2.5 watts
Published value from supplied target entry
Grid-No
2
Published value from supplied target entry
For grid-No
0.55 volts
Published value from supplied target entry
For grid-No
300 volts
Published value from supplied target entry
Plate Voltage
125 volts
Published value from supplied target entry
Grid-No
125
Published value from supplied target entry
Grid-No
-1 volt
Published value from supplied target entry
Amplification Factor
46
Published value from supplied target entry
Plate Resistance (Approx.)
200000 ohms
Published value from supplied target entry
Transconductance
7500
Published value from supplied target entry
Plate Current
12 mA
Published value from supplied target entry
Grid-No
4 mA
Published value from supplied target entry

Capacitance

Grid to Plate
1.6 pF
Published value from supplied target entry
Plate to Cathode, Heater, Grid No
3
Published value from supplied target entry
Heater to Cathode (Each Unit)
3.2 pF
Published value from supplied target entry