Data set 01
1961 Tung Sol
Published operating points and test conditions from this source.
SECTION 1
Cathode Ray
Capacitance
CathodeToOtherElectrodesCapacitance
7 pF
Specialized - Cathode Ray ·CathodeRay
3BP1
Three-inch high-vacuum electrostatic cathode-ray tube with P1 phosphor, designed for oscillographic applications. Electrostatic focusing and deflection provide direct, precise trace positioning for measurement equipment.
Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
- Sections
- 1
- Base
- -
- Socket code
- -
- Base pins
- 11
- Nominal heater
- 6.3 V / 600 mA
Description
High-vacuum electrostatic cathode-ray tube with No. 1 phosphor for oscillographic applications.
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- -
- Base pins
- 11
- Nominal heater voltage
- 6.3 V
- Nominal heater current
- 600 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
Cathode Ray
X-ray radiationInterelectrode capacitances
- Rectifier max heater-cathode voltage
- 125 V
Published ratings/characteristics promoted where semantically applicable; supplemental values retained in parameter table.
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.