Data set 01
1938 Raytheon Amateur
Published operating points and test conditions from this source.
SECTION 1
Triode
Application
Application
Detector_AFAmplifier text
Voltage - Triode (single) ·Triode
864
Low-microphonics general-purpose triode for detector, amplifier, and oscillator service in battery equipment subject to shock or vibration.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- UX4
- Base pins
- 4
- Nominal heater
- 1.1 V / 250 mA
Description
Special low-microphonics general-purpose triode for detector, amplifier, and oscillator service in battery equipment subject to shock or vibration.
Socket description
Medium-shell UX 4-contact
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- UX4
- Base pins
- 4
- Nominal heater voltage
- 1.1 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
- Plate resistance
- 12700 Ω
- Transconductance
- 0.000645 S
- Amplification factor
- 8.2
- Max plate voltage
- 135 V
- Max cathode current
- 4 mA
Published ratings and characteristics promoted from the approved Raytheon 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 02
1938 RCA Transmitting Tubes
Published operating points and test conditions from this source.
SECTION 1
Triode
Other
HeaterVoltageNominal
1.1 V
Nominal
HeaterCurrentNominal
250 mA
Nominal
Maximum Plate Voltage
135 V
Characteristic
Transconductance
645 µS
Typical
Amplification Factor
8.2
Typical
Plate Resistance
12700 ohm
Typical
Data set 03
1950 Sylvania
Published operating points and test conditions from this source.
SECTION 1
Triode
Characteristic
Plate Resistance
12700 ohm
Transconductance
645 µS
Amplification Factor
8.2
Other
Maximum Plate Voltage
135 V
Maximum Cathode Current
4 mA