Micro-PMT module


H12404 series is the most widespread standard type and has a built-in high-voltage power supply. The H12404-20 is extended red multialkali photocathode micro PMT module with spectral response range from 300 nm to 920 nm.

Spectral response 300 nm to 920 nm
Peak sensitivity wavelength 630 nm
Photocathode material Extended red multialkali
Window material Borosilicate glass
Effective area 1 mm x 3 mm
Input voltage ±4.5 V to ±5.5 V
Max. Input voltage ±5.5 V
Max. Input current +23.5 mA / -3.5 mA
Max. Average output signal voltage +4 V
Max. Control voltage +1.15 V
Recommended control voltage adjustment range +0.5 V to +1.1 V
Control voltage input impedance 1 MΩ
[Cathode] Luminous sensitivity Min. 300 μA/lm
[Cathode] Luminous sensitivity Typ. 400 μA/lm
[Cathode] Radiant sensitivity Typ. 60 mA/W
[Cathode] Red/White ratio Typ. 0.45
[Anode] Luminous sensitivity Min. 3.0 x 107 V/lm
[Anode] Luminous sensitivity Typ. 1.0 x 108 V/lm
[Anode] Radiant sensitivity Typ. 15 V/nW
Voltage output depending on PMT dark current Typ. 0.6 mV
Voltage output depending on PMT dark current Max. 6 mV
PMT gain 2.5 x 105
Frequency bandwidth DC to 20 kHz
Current-to-voltage conversion factor 1 V / μA
Output offset voltage ±1 mV
Ripple noise (peak to peak) 1.5 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)
Green Low voltage input (-5 V)
Blue Vref output (+1.2 V)
White Vcont input (+0.5 V to +1.1 V)
RG-174/U - Signal output / Signal GND (Coaxial)

Details of input window

Cross section

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