Micro-PMT photon counting head
H12406 series has an internal photon counting circuit. The H12406-20 is extended red multialkali photocathode micro PMT photon counting head 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||+4.75 V to +5.25 V|
|Max. Input voltage||+6 V|
|Max. Input current||40 mA|
|Count sensitivity at 300 nm Typ.||4.4 x 104 s-1・pW-1|
|Count sensitivity at 400 nm Typ.||6.6 x 104 s-1・pW-1|
|Count sensitivity at 500 nm Typ.||2.1 x 105 s-1・pW-1|
|Count sensitivity at 600 nm Typ.||2.6 x 105 s-1・pW-1|
|Count sensitivity at 700 nm Typ.||2.1 x 105 s-1・pW-1|
|Count sensitivity at 800 nm Typ.||1..2 x 105 s-1・pW-1|
|Count sensitivity at 900 nm Typ.||3.9 x 103 s-1・pW-1|
|Count linearity||5.0 x 106 s-1|
|Dark count Typ.||500 s-1|
|Dark count Max.||2500 s-1|
|Pulse-pair resolution||20 ns|
|Output pulse width||10 ns|
|Output pulse height (at load resistance 50 Ω) Min.||+2.0 V|
|Output pulse height (at load resistance 50 Ω) Typ.||+2.2 V|
|Recommended load resistance||50 Ω|
|Signal output logic||Positive logic|
|Excessive light detection output (Excessive light incident) Min.||+3.5 V|
|Excessive light detection output (Normally) Max.||+0.5 V|
|Red||Low voltage input (+5 V)|
|Blue||Over light detection output|
|RG-174/U||-||Signal output / Signal GND (Coaxial)|
Details of input window
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