Data set 01
1961 Tung Sol
Published operating points and test conditions from this source.
SECTION 1
PhotoemissiveDetector
Other
PeakCathodeCurrentDensity
125 uA/in2
Average Cathode Current
5 uA
Specialized - Photo Tube ·PhotoemissiveDetector
8049
Cesium-antimony head-on vacuum photodiode designed for low light levels and low applied voltages. Low dark current and visible-spectrum sensitivity make it suitable for direct photoelectric measurement without internal multiplication.
Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
- Sections
- 1
- Base
- -
- Socket code
- -
- Base pins
- 8
- Nominal heater
- -
Description
The 8049 is a cesium-antimony head-on vacuum photodiode designed for low light levels and low applied voltages, with low dark current and useful visible-spectrum sensitivity.
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- -
- Base pins
- 8
- Nominal heater voltage
- -
- Nominal heater current
- -
- 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
PhotoemissiveDetector
X-ray radiationInterelectrode capacitances
- Max plate voltage
- 250 V
- Max cathode current
- 0.005 mA
Published promoted fields populated by semantic section ownership; identical repeated sections compressed.
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
1966 Tung Sol Electronic Tubes 4 of 4
Published operating points and test conditions from this source.
SECTION 1
PhotoemissiveDetector
Characteristic
Wavelength of maximum response
3500 to 4500 angstrom
WholeTube
Direct interelectrode capacitance
1.3 pF
WholeTube
Luminous sensitivity average
15 to 60 uA/lumen
WholeTube
Direct
1.3 pf
PublishedTable
Voltage (Dc
-0.3 voLTs
PublishedTable
Dark Current
25 VOLTS
PublishedTable
Luminous Sensitivity
60 uA
PublishedTable
Other
Peak cathode current maximum
20 uA
WholeTube
Average cathode current maximum
5 uA
WholeTube
Wavelength Of Maximum Response
500 ANGSTROMS
PublishedTable
Maximum Peak Cathode Current
20 AMP
PublishedTable