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Photosensor module

H14121-50

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The H14121 series are photosensor modules containing a metal package PMT having a GaAsP/GaAs photocathode and a high-voltage power supply circuit. The H14121-50 (GaAs photocathode) is sensitive along a wide spectral range from 380 nm to 900 nm. The H14121-40 (GaAsP photocathode) has high sensitivity in the spectral range from 300 nm to 740 nm wavelengths.

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Specifications

Parameter Description / Value Unit
Input voltage +11.5 to +15.5 V
Max. input voltage +18 V
Max. input current *1 12 mA
Max. output signal current 2 μA
Max. control voltage +0.9 (Input impedance 30kΩ) V
Recommended control voltage adjustment range +0.5 to +0.8 V
Effective area Dia.5 mm
Spectral response 380 to 900 nm
Peak quantum efficiency wavelength 630 nm
[Cathode] Quantum efficiency at peak quantum efficiency wavelength Min. 14 %
Typ. 19 %
at 800 nm Min. 11 %
Typ. 15 %
[Cathode] Radiant sensitivity at peak quantum efficiency wavelength Min. 70 mA/W
Typ. 95 mA/W
at 800 nm Min. 71 mA/W
Typ. 97 mA/W
[Anode] Radiant sensitivity *2 at peak quantum efficiency wavelength Min. 4.2 × 104 A/W
Typ. 9.5 × 104 A/W
at 800 nm Min. 4.3 × 104 A/W
Typ. 9.7 × 104 A/W
[Anode] Dark current *2 *3 Typ. 4 nA
Max. 12 nA
[Anode] Gain *2 Typ. 1.0 × 106 -
Rise time *2 Typ. 1.0 ns
Ripple noise (peak to peak) *2 *4 Max. 0.6 mV
Settling time *5 Typ. 0.2 s
Operating ambient temperature *6 +5 to +35 °C
Storage temperature *6 -20 to +50 °C
Weight 76 g

Notes
*1 At ±5 V input voltage and +0.8 V control voltage in darkness
*2 Control voltage = +0.8 V
*3 After 30 minutes storage in darkness
*4 Load resistance = 1 MΩ, Load capacitance = 22 pF
*5 The time required for the output to reach a stable level following a change in the control voltage from +0.9 V to +0.5 V.
*6 No condensation

Dimensional outline (unit: mm)

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