Data set 01
1947 Standard Valves
Published operating points and test conditions from this source.
SECTION 1
Triode
Capacitance
Anode-grid capacitance
1.5 pF
Anode-cathode capacitance
0.035 pF
Grid-cathode capacitance
4 pF
Voltage - Triode (single high frequency) ·Triode
3AI48J
Special grounded-grid UHF triode designed primarily for operation around 600 MHz.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- -
- Base pins
- -
- Nominal heater
- 6.3 V / 400 mA
Description
Special grounded-grid UHF triode designed primarily for 600 MHz operation, equivalent to 3A/I48J.
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
- 400 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
- Transconductance
- 0.005 S
- Amplification factor
- 100
- Max plate voltage
- 350 V
- Max plate dissipation
- 2 W
Grounded-grid UHF triode.
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.