Alternatives & variations Download PDF datasheet

6J49PD

Russian miniature pentode designed for voltage amplification in radio-electronic equipment. Its manufacturer description supports a conventional small-signal amplifier function without sufficiently explicit evidence for a narrower functional category.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 6.3 V / 300 mA

Description

Miniature pentode for voltage amplification in radio-electronic 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: 6.3 V
Nominal heater current: 300 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: 100000 Ω
Transconductance: 0.0175 S
Max plate voltage: 150 V
Max screen voltage: 150 V
Max plate dissipation: 2.85 W
Max screen dissipation: 0.52 W
Max cathode current: 22.5 mA

Values promoted where clearly identifiable from Russian source.

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

1981 Russian Tubes Katsnelson and Larionov

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristic

Plate current
4 mA
Published Russian-source value; OCR-normalized.
Screen current
0.55
Published Russian-source value; OCR-normalized.
Transconductance
53.5
Published Russian-source value; OCR-normalized.
Plate resistance
100 kΩ
Published Russian-source value; OCR-normalized.
Input capacitance
1.2 pF
Published Russian-source value; OCR-normalized.
Output capacitance
0.4 pF
Published Russian-source value; OCR-normalized.
Transfer capacitance
0.03 pF
Published Russian-source value; OCR-normalized.
Service life
10 h
Published Russian-source value; OCR-normalized.
Heater voltage
6.6 V
Nominal/published heater value.