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Voltage - Triode (single high frequency) ·Triode

3A148J

Special grounded-grid UHF triode designed primarily for operation around 600 MHz.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
6.3 V / 400 mA

Description

Grounded-grid UHF triode designed primarily for 600 MHz service.

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
6.3 V
Nominal heater current
400 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

Triode

X-ray radiationInterelectrode capacitances
Transconductance
0.005 S
Amplification factor
100
Max plate voltage
350 V
Max plate dissipation
2 W

Published triode ratings/characteristics promoted from the approved datasheet.

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

1946 Standard Telephone and Cables

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Anode-grid capacitance

    1.5 pF

    Direct inter-electrode capacitance

  • Anode-cathode capacitance

    0.035 pF

    Direct inter-electrode capacitance

  • Grid-cathode capacitance

    4 pF

    Direct inter-electrode capacitance