Data set 01
1950 Sylvania
Published operating points and test conditions from this source.
SECTION 1
Other
Characteristics
Wavelength of maximum response
6100 angstrom
Construction
Photoconductor material
Cadmium sulfide
Other (weirdo tubes) ·Other
8346
Type 8346 remains functionally unresolved from the available approved source material; no narrower classification is assigned without readable application evidence.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- B12A
- Base pins
- -
- Nominal heater
- -
Description
Cadmium-sulfide photoconductive cell for industrial light-sensing and relay/control applications.
Socket description
Duodecal 12-contact
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- B12A
- Base pins
- -
- 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
Other
X-ray radiationInterelectrode capacitances
No fixed ratings are recorded for this section.
Photoconductive cell; spectral and construction data retained as parameters.
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
1965 Sylvania Electronic Tubes Vol3
Published operating points and test conditions from this source.
SECTION 1
Other
Construction
Sensitive material
Cadmium sulfide
Characteristics
Spectral response peak approximate
6100 angstrom
Cell resistance at 2 foot-candles
3000 ohm
Dark resistance minimum
300000 ohm
Other
Breakdown voltage maximum
400 V
Permissible dissipation at 25 C
300 mW
Permissible dissipation at 70 C
25 mW
Ambient temperature minimum
-40 C
Ambient temperature maximum
70 C
Condition
Resistance measurement illumination
2 foot-candle
Dark-resistance measurement delay
10 s
Application
Application
Industrial light sensing / relay control