CK502AX

Directly heated Raytheon subminiature pentode for low-power amplifier service in portable and wearable equipment. Its tiny filament demand and compact construction target battery-operated personal electronics.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 1.25 V / 30 mA

Description

Directly heated subminiature pentode for low-power amplifier service in portable and wearable equipment.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: -
Base pins: -
Nominal heater voltage: 1.25 V
Nominal heater current: 30 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: 250000 Ω
Transconductance: 0.0005 S
Max plate voltage: 45 V
Max cathode current: 1 mA

Supplied handbook table and any explicit cross-reference/service row reviewed.

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

1938 Raytheon

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

HeaterVoltageNominal
1.25 V
Nominal
HeaterCurrentNominal
30 mA
Nominal
Maximum Plate Voltage
45 V
Maximum Cathode Current
1 mA

Characteristic

Transconductance
500 µS
Typical
Plate Resistance
250000 ohm
Typical

Data set 02

195X Raytheon Special Purpose Tubes

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

Published application/classification
subminiature pentode power amplifier
Supplied handbook table