Data set 01
9999 Mixed G 1000
Published operating points and test conditions from this source.
SECTION 1
Triode
Characteristics
Plate Voltage
150 V
Plate Current
0.5 mA
Voltage - Triode (single) ·Triode
201
Telefunken Arcotron 201 directly heated early audio-frequency voltage amplifier for resistance-coupled circuits, with 1 V 0.25 A filament and recommended 1 MΩ anode load.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- -
- Base pins
- -
- Nominal heater
- 1 V / 250 mA
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
- 1 V
- Nominal heater current
- 250 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
No fixed ratings are recorded for this section.
Telefunken Arcotron 201, original German manufacturer literature pages 120 and 122. Early directly heated low-frequency voltage amplifier tube intended only for resistance-coupled audio-frequency amplifier stages. Filament 1.0 V, approximately 0.25 A. Maximum anode current 0.5 mA. Recommended anode load approximately 1 MΩ, with example anode supply 150 V and measured circuit voltage gain approximately 15 at 500 Hz. This is loaded circuit voltage gain, NOT intrinsic triode amplification factor (mu). The 150 V supply is an example operating condition, NOT a published maximum plate-voltage rating. Manufacturer says a conventional static characteristic curve cannot be supplied for Telefunken rod tubes. Mechanical/base references are to other pages not present in this PDF; canonical base unassigned. Do not infer gm, rp, mu, or maximum plate voltage.
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.