Photomultiplier tube

R2557P

13mm dia., Head-on type, Low noise bialkali photocathode (Effective area : 10 mm dia./Spectral response : 300 nm to 650 nm) Photon counting type of R2557

Type Head-on type
Tube Size Dia.13 mm
Photocathode Area Shape Round
Photocathode Area Size Dia.10 mm
Wavelength (Short) 300 nm
Wavelength (Long) 650 nm
Wavelength (Peak) 375 nm
Spectral Response Curve Code 402K
Photocathode Material Low noise bialkali
Window Material Borosilicate glass
Dynode Structure Linear-focused
Dynode Stages 10
[Max. Rating] Anode to Cathode Voltage 1500 V
[Max. Rating] Average Anode Current 0.03 mA
Anode to Cathode Supply Voltage 1250 V
[Cathode] Luminous Sensitivity Min. 25 μA/lm
[Cathode] Luminous Sensitivity Typ. 40 μA/lm
[Cathode] Blue Sensitivity Index (CS 5-58) Typ. 5.5
[Cathode] Radiant Sensitivity Typ. 50 mA/W
[Anode] Luminous Sensitivity Min. 50 A/lm
[Anode] Luminous Sensitivity Typ. 200 A/lm
[Anode] Radiant Sensitivity Typ. 2.5 x 105 A/W
[Anode] Gain Typ. 5.0 x 106
[Anode] Dark Current (after 30min.) Typ. 0.5 nA
[Anode] Dark Current (after 30min.) Max. 4 nA
[Time Response] Rise Time Typ. 2.2 ns
[Time Response] Transit Time Typ. 22 ns

Dimensional outline (Unit: mm)

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