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Voltage Pentode - Sharp Cutoff (single) ·Pentode

RD12PB

High-frequency receiving pentode designed for RF amplification, including short-wave or VHF service according to type.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
12.6 V / 75 mA

Description

Telefunken RD12PB is a VHF receiving pentode intended primarily for approximately 1 to 2.5 m wavelength operation.

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
12.6 V
Nominal heater current
75 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
800000 Ω
Transconductance
0.0028 S
Max plate voltage
250 V
Max screen voltage
200 V
Max plate dissipation
1 W
Max screen dissipation
0.3 W
Max cathode current
6 mA

Published ratings and characteristics were promoted when unambiguous; additional operating values are preserved in TUBE_SECTION_PARAMETER.

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

194X Wehrmacht Rohren

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristic

  • Warm-up time

    15 s

Capacitance

  • Input capacitance

    3.5 pF

    Cold/static

  • Output capacitance

    2.7 pF

    Cold/static

Other

  • Plate voltage

    100 V

    HF input stage

  • Screen voltage

    130 V

    HF input stage

  • Plate current

    4 mA

    HF input stage

  • Screen current

    0.6 mA

    HF input stage