Other (weirdo tubes) ·Other
E448
Philips E448 remains functionally unresolved from the available datasheet summary; a narrower classification is not assigned without explicit application evidence.
- Sections
- 1
- Base
- -
- Socket code
- B5
- Base pins
- -
- Nominal heater
- 4 V / 1.2 A
Description
Philips other vacuum tube. Electrical ratings, heater data, operating characteristics and construction details are taken from the supplied Philips data sheet.
Socket description
European 5-pin base
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- B5
- Base pins
- -
- Nominal heater voltage
- 4 V
- Nominal heater current
- 1.2 A
- 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
Other
No fixed ratings are recorded for this section.
Published characteristics promoted where clearly identified.
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.