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Voltage - Triode (single high frequency) ·Triode

8254

Premium subminiature frame-grid triode designed for high-frequency probe and instrumentation service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
6.3 V / 185 mA

Description

Premium-quality subminiature frame-grid triode designed for high-frequency probe 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
185 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
0.0145 S
Amplification factor
24
Max plate voltage
119 V
Max plate dissipation
1.5 W
Max cathode current
22 mA

Promoted ratings and characteristics mapped from source tables.

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

1953 Amperex

Published operating points and test conditions from this source.

SECTION 1

Triode

Capacitance

  • Grid To Cathode Capacitance

    3.5 pF

    Published direct interelectrode capacitance

  • Grid To Plate Capacitance

    1.9 pF

    Published direct interelectrode capacitance