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Maxi International (HK) Co., Limited
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HAMAMATSU
/ H11901-20
H11901-20
High-sensitivity PMT
with bialkali photocathode
Thermoelectric cooling system
(-20°C below ambient)
Built-in discriminator circuit
USB 2.0 interface
Designed for
ultra-low-light detection
in scientific and industrial applications
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Parameter
Specification
Detector Type
Bialkali PMT (Sb-K-Cs)
Spectral Range
300-650 nm
Peak Wavelength
420 nm
QE @ Peak
25%
Dark Count Rate
<50 cps (cooled)
Max Count Rate
5 MHz
Timing Resolution
3 ns FWHM
Cooling Capacity
ΔT = -20°C (max)
Output Signals
TTL (photon), Analog (0-5V)
Power Supply
12V DC, 1.5A max
Interface
USB 2.0
Operating Temp.
0°C to +40°C
Dimensions
φ60 × 50 mm
Weight
300 g
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