Micro-PMT module


H12402 series is the most widespread standard type and has a built-in high-voltage power supply. The H12402 is bialkali photocathode micro PMT module with spectral response range from 300 nm to 650 nm.

Spectral response 300 nm to 650 nm
Peak sensitivity wavelength 420 nm
Photocathode material Bialkali
Window material Borosilicate glass
Effective area 1 mm x 3 mm
Input voltage ±4.5 V to ±5.5 V
Max. Input Current +5.5 V
Max. Input current 20 mA
Max. Average output signal current 5 μA
Max. Control voltage +1.15 V
Recommended control voltage adjustment range +0.5 V to +1.0 V
Control voltage input impedance 1 MΩ
[Cathode] Luminous sensitivity Min. 50 μA/lm
[Cathode] Luminous sensitivity Typ. 80 μA/lm
[Cathode] Radiant sensitivity Typ. 80 mA/W
Blue sensitivity index Typ. 8.0
[Anode] Luminous sensitivity Min. 30 A/lm
[Anode] Luminous sensitivity Typ. 160 A/lm
[Anode] Radiant sensitivity Typ. 1.6 x 105
Gain Typ. 2.0 x 106
Anode dark current Typ. 0.3 nA
Anode dark current Max. 3 nA
[Time response] Rise time 1.2 ns
Ripple noise (peak to peak) 0.3 mV
Settling time 10 s

Dimensional outline (Unit mm)

Signal input/output

Cable  Color Signal type
UL1430 AWG26 Black GND
Red Low voltage input (+5 V)
Blue Vref output (+1.2 V)
White Vcont input (+0.5 V to +1.0 V)
RG-174/U - Signal output / Signal GND (Coaxial)

Details of input window

Cross section

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