Photomultiplier tube


25mm dia., Head-on type, Blue super bialkali photocathode (Effective area : 22 mm dia./Spectral response : 300 nm to 650 nm), Low noise, High sensitivity in 300 nm to 500 nm, Photon counting type of R1924A-700

Type Head-on type
Tube Size Dia.25 mm
Photocathode Area Shape Round
Photocathode Area Size Dia.22 mm
Wavelength (Short) 300 nm
Wavelength (Long) 650 nm
Wavelength (Peak) 400 nm
Spectral Response Curve Code 446K
Photocathode Material Blue super bialkali
Window Material Borosilicate glass
Dynode Structure Circular and linear-focused
Dynode Stages 10
[Max. Rating] Anode to Cathode Voltage 1250 V
[Max. Rating] Average Anode Current 0.1 mA
Anode to Cathode Supply Voltage 1000 V
[Cathode] Luminous Sensitivity Min. 70 μA/lm
[Cathode] Luminous Sensitivity Typ. 90 μA/lm
[Cathode] Blue Sensitivity Index (CS 5-58) Typ. 13
[Cathode] Radiant Sensitivity Typ. 105 mA/W
[Anode] Luminous Sensitivity Min. 105 A/lm
[Anode] Luminous Sensitivity Typ. 180 A/lm
[Anode] Radiant Sensitivity Typ. 2.1 x 105 A/W
[Anode] Gain Typ. 2.0 x 106
[Anode] Dark Current (after 30min.) Typ. 0.5 nA
[Anode] Dark Current (after 30min.) Max. 5 nA
[Time Response] Rise Time Typ. 1.5 ns
[Time Response] Transit Time Typ. 17 ns

Dimensional outline (Unit: mm)

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