Data set 01
1957 Philips Receiving and Amplifying Tubes
Published operating points and test conditions from this source.
SECTION 1
PhotoemissiveDetector
Characteristics
Anode-to-last-dynode Capacitance
3 pF
Anode Capacitance
5 pF
Specialized - Photo Tube ·PhotoemissiveDetector
50AVP
Eleven-stage Amperex photomultiplier with at least 32 mm useful photocathode diameter. Cascaded secondary-emission stages provide high internal gain for sensitive measurement of very low optical signal levels.
Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
- Sections
- 1
- Base
- Duodecal
- Socket code
- B12C
- Base pins
- 12
- Nominal heater
- -
Description
50AVP is a PhotoTube device in the supplied Amperex literature. Eleven-stage Amperex photomultiplier tube with 32 mm minimum useful photocathode diameter.
Socket description
Duodecar 12-contact
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- Duodecal
- Socket code
- B12C
- Base pins
- 12
- Nominal heater voltage
- -
- Nominal heater current
- -
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
Duodecal - 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
- 2250 V
- Max plate dissipation
- 0.5 W
Photomultiplier structure with photocathode and dynode chain.
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
1963 Amperex Condensed
Published operating points and test conditions from this source.
SECTION 1
PhotoemissiveDetector
Other
Minimum useful photocathode diameter
32 mm
Number of stages
11 count
Base
duodecal
Recommended supply voltage
1800 V
Minimum photocathode-to-first-dynode voltage
180 V
Minimum voltage between other electrodes
80 V
Minimum D1-to-D2 voltage
160 V
50AVP special instruction
Characteristic
Maximum spectral response wavelength
4200 angstrom
Minimum photocathode sensitivity
25 uA/lm
Average photocathode sensitivity
50 uA/lm
Minimum anode sensitivity
60 A/lm
Data set 03
1999 Philips 0-D
Published operating points and test conditions from this source.
SECTION 1
PhotoemissiveDetector
Characteristic
Number of stages
11
Photocathode useful diameter
min 32 mm
Wavelength maximum response
4200 ±300 angstrom
Luminous sensitivity
50 uA/lm
Current amplification
60 to - A/lm
Vb=1800V; Vs=147V
Anode dark current
max 50e-9 A
Capacitance
Anode capacitance
5 pF
Anode-to-last-dynode capacitance
3 pF
Other
Anode current max
0.7 mA