Alternatives & variations Download PDF datasheet

TC0525

Directly heated Philips transmitting triode for oscillator, RF amplifier, and Class B audio service. With about 660 V plate capability and 40 W dissipation, it provides useful medium-power transmitter performance.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 4 V / 2.2 A

Description

Directly heated transmitting triode for oscillator, RF amplifier and Class-B audio service. The supplied Philips source was read for heater or filament data, ratings, characteristics, capacitances, and representative operating conditions.

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: 4 V
Nominal heater current: 2.2 A
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

Triode

X-ray radiationInterelectrode capacitances

Transconductance: 0.0022 S
Max plate voltage: 660 V
Max plate dissipation: 40 W
Max cathode current: 100 mA

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

1999 Philips E-Z

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

Heater/filament voltage
4 V
Heater/filament current
2.2 A
Transconductance
2200 uS

Other

Maximum plate voltage
660 V
Maximum plate dissipation
40 W
Maximum cathode current
100 mA
Operating plate voltage
600 V
ClassC;Telegraphy;150m
Operating plate current
93 mA
ClassC;Telegraphy;150m
Output power
35 W
ClassC;Telegraphy;150m

Capacitance

Plate/anode capacitance
2.7 pF
Grid capacitance
6.2 pF
Plate-grid capacitance
6.6 pF