R1924А

The Hamamatsu R1924A is a high-sensitivityside-on type photomultiplier tube featuring a bialkali photocathode, designed for low-light-level detection in scientific and industrial applications. Its compact metal package provides excellent photon detection efficiency and fast response characteristics.

Parameter Specification
Photocathode Material Bialkali (Sb-K-Cs)
Spectral Range 300-650 nm
Peak Wavelength 420 nm
Cathode Luminous Sens. 70 μA/lm min (at 2856K)
Anode Luminous Sens. 50 A/lm min (at 800V)
Gain 1×10⁶ typical (at 800V)
Dark Current 5 nA max (at 800V)
Rise Time 2.2 ns
Transit Time 15 ns
Supply Voltage 800V max (divider circuit)
Package Type Metal can (φ19 mm)