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Micro PMT photon counting head

H12406

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The H12406 is a photon counting head that contain a Micro PMT, a highvoltage power supply circuit and a photon counting circuit.
This photon counting head can be easily operated with a low voltage supply.

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Count sensitivity

Block diagram

Specifications

  Description/Value Unit
Spectral response 300 to 650 nm
Peak sensitivity wavelength 420 nm
Photocathode Material Bialkali -
Effective area 3 × 1 mm
Window material Borosilicate glass -
Dynode number of stages 12 -
Input voltage +4.75 to +5.25 V
Max. Input voltage +6 V
Max. Input current 40 mA
Count sensitivity Typ. 300 nm 1.7 × 105 s-1・pW-1
400 nm 3.6 × 105
500 nm 2.6 × 105
600 nm 4.3 × 104
700 nm 1.4 × 102
Count linearity (*1) 5.0 × 106 s-1
Dark count (*2) Typ. 10 s-1
Max. 50
Pulse-pair resolution 20 ns
Output pulse width 10 ns
Output pulse height (at load resistance 50 Ω) Min. +2.0 V
Typ. +2.2
Recommended load resistance 50 Ω
Signal output logic Positive logic -
Excessive light detection output (*3) Excessive light incident Min. +3.5 V
Normally Max. +0.5 V
Operating ambient temperature (*4) +5 to +50
Storage temperature (*4) -20 to +50
Weight 46 g

Notes
*1 Random pulse, at 10% count loss
*2 After 30 minute storage in darkness
*3 Load resistance 10 kΩ
*4 No condensation

Dimensional outline (Unit mm)

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