4673

High-transconductance pentode developed for high-frequency and television amplification, with published operating conditions for wideband video service.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: P30-VIII
Socket code: -
Base pins: -
Nominal heater: 4 V / 150 mA

Description

Indirectly heated pentode for high-frequency amplification.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: P30-VIII
Socket code: -
Base pins: -
Nominal heater voltage: 4 V
Nominal heater current: 150 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

P30-VIII - 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: 1500000 Ω
Transconductance: 0.005 S
Max plate voltage: 250 V
Max screen voltage: 200 V
Max plate dissipation: 2.5 W
Max screen dissipation: 0.4 W
Max cathode current: 15 mA

Promoted only from clearly identified published characteristics/limits; additional operating, capacitance, regulator, gas-tube, and push-pull data retained as section parameters.

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 Philips Miniwatt Vacuum Tube Catalog

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

Plate current
8 mA
TelevisionAmplifier
Control-grid voltage
-2.5 V
TelevisionAmplifier
Screen voltage
200 V
TelevisionAmplifier
Suppressor-grid voltage
0 V
TelevisionAmplifier
Screen current
1.5 mA
TelevisionAmplifier

Characteristic

Plate resistance minimum
1500000 Ω
TelevisionAmplifier
Transconductance
5000 µS
TelevisionAmplifier

Capacitance

Grid-to-plate capacitance
0.012 pF
LessThan
Plate-to-cathode capacitance
7.5 pF
Section1
Grid-to-cathode capacitance
9.6 pF
Section1

Data set 02

1957 Philips Receiving and Amplifying Tubes

Published operating points and test conditions from this source.

SECTION 1

Pentode

Application

Application
High-frequency amplifier

Data set 03

1999 Philips 0-D

Published operating points and test conditions from this source.

SECTION 1

Pentode

Capacitance

Anode capacitance
13 pF
Input capacitance
9.6 pF
Anode-grid capacitance
<0.012 pF

Characteristic

Typical plate current
8 mA
Va=250V; Vg2=200V
Typical screen current
1.5 mA
Va=250V; Vg2=200V