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Voltage - Triode (single) ·Triode

101J

Low-power filamentary triode for carrier-system modulation and amplification in professional communications equipment.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
UV4
Base pins
4
Nominal heater
4.15 V / 500 mA

Description

The 101J is a low-power filamentary triode similar in characteristics to the 101F, with a pear-shaped bulb and higher insulation between elements, for carrier-system modulation/demodulation and low-power amplification.

Socket description

WD/UV 4-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
UV4
Base pins
4
Nominal heater voltage
4.15 V
Nominal heater current
500 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
Plate resistance
6500 Ω
Amplification factor
6.5
Max plate voltage
190 V

Low-power filamentary triode; similar to 101F, pear-shaped bulb, higher interelement insulation.

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

2026 Western Electric 100s

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Filament voltage

    4.15 V

  • Filament current

    500 mA

  • Maximum plate voltage

    190 V

  • Plate voltage

    100 V

    RecommendedOperating; Point1

  • Grid voltage

    -4 V

    RecommendedOperating; Point1

  • Plate current

    6.3 mA

    RecommendedOperating; Point1

  • Amplification factor

    6.6

    RecommendedOperating; Point1

  • Plate resistance

    5750 ohm

    RecommendedOperating; Point1

  • Power output

    16 mW

    RecommendedOperating; Point1

  • Plate voltage

    130 V

    RecommendedOperating; Point2

  • Grid voltage

    -10 V

    RecommendedOperating; Point2

  • Plate current

    4.8 mA

    RecommendedOperating; Point2

  • Amplification factor

    6.5

    RecommendedOperating; Point2

  • Plate resistance

    6500 ohm

    RecommendedOperating; Point2

  • Power output

    80 mW

    RecommendedOperating; Point2

  • Plate voltage

    180 V

    RecommendedOperating; Point3

  • Grid voltage

    -8 V

    RecommendedOperating; Point3

  • Plate current

    7 mA

    RecommendedOperating; Point3

  • Amplification factor

    6.5

    RecommendedOperating; Point3

  • Plate resistance

    5600 ohm

    RecommendedOperating; Point3

  • Power output

    62 mW

    RecommendedOperating; Point3

  • Plate voltage

    130 V

    RecommendedOperating; Point4

  • Grid voltage

    -4 V

    RecommendedOperating; Point4

  • Plate current

    11.9 mA

    RecommendedOperating; Point4

  • Amplification factor

    6.6

    RecommendedOperating; Point4

  • Plate resistance

    4800 ohm

    RecommendedOperating; Point4

  • Power output

    20 mW

    RecommendedOperating; Point4

  • Plate voltage

    160 V

    RecommendedOperating; Point5

  • Grid voltage

    -14 V

    RecommendedOperating; Point5

  • Plate current

    5.4 mA

    RecommendedOperating; Point5

  • Amplification factor

    6.5

    RecommendedOperating; Point5

  • Plate resistance

    6500 ohm

    RecommendedOperating; Point5

  • Power output

    170 mW

    RecommendedOperating; Point5

  • Plate voltage

    160 V

    RecommendedOperating; Point6

  • Grid voltage

    -10 V

    RecommendedOperating; Point6

  • Plate current

    10 mA

    RecommendedOperating; Point6

  • Amplification factor

    6.6

    RecommendedOperating; Point6

  • Plate resistance

    5000 ohm

    RecommendedOperating; Point6

  • Power output

    120 mW

    RecommendedOperating; Point6

  • Plate voltage

    190 V

    MaximumOperating; Point7

  • Grid voltage

    -18 V

    MaximumOperating; Point7

  • Plate current

    6.2 mA

    MaximumOperating; Point7

  • Amplification factor

    6.5

    MaximumOperating; Point7

  • Plate resistance

    6100 ohm

    MaximumOperating; Point7

  • Power output

    275 mW

    MaximumOperating; Point7

  • Plate voltage

    190 V

    MaximumOperating; Point8

  • Grid voltage

    -16 V

    MaximumOperating; Point8

  • Plate current

    8.4 mA

    MaximumOperating; Point8

  • Amplification factor

    6.5

    MaximumOperating; Point8

  • Plate resistance

    5450 ohm

    MaximumOperating; Point8

  • Power output

    270 mW

    MaximumOperating; Point8

  • Plate voltage

    190 V

    MaximumOperating; Point9

  • Grid voltage

    -14 V

    MaximumOperating; Point9

  • Plate current

    10.9 mA

    MaximumOperating; Point9

  • Amplification factor

    6.6

    MaximumOperating; Point9

  • Plate resistance

    5000 ohm

    MaximumOperating; Point9

  • Power output

    250 mW

    MaximumOperating; Point9

Capacitance

  • Grid-to-plate capacitance

    6.5 pF

    Based tube without socket

  • Grid-to-filament capacitance

    4.2 pF

    Based tube without socket

  • Plate-to-filament capacitance

    1.7 pF

    Based tube without socket

Characteristic

  • Plate resistance

    6500 ohm

    Representative published operating point

  • Amplification factor

    6.5

    Representative published operating point