S2281-01Si photodiode


Datasheet [202 KB/PDF]

Si photodiode with BNC connector


The S2281-01 is a Si photodiode sealed in a metal package with a BNC connector. This configuration allows easy connection to Hamamatsu C9329 photosensor amplifier (S2281-01 has a large terminal capacitance which may cause a gain peaking to occur when C9329 is used with the gain set to the "M" range.). The large photosensitive area makes the S2281-01 well suited for optical power meters. Hamamatsu also provides E2573 BNC-BNC coaxial cable (length: 1 m) as an option.


- Metal package with BNC connector
- High sensitivity
- High reliability


Photosensitive area φ11.3 mm
Number of elements 1
Package With BNC connector
Package category With BNC connector
Cooling Non-cooled
Reverse voltage (max.) 5 V
Spectral response range 190 to 1000 nm
Peak sensitivity wavelength (typ.) 720 nm
Photosensitivity (typ.) 0.36 A/W
Dark current (max.) 300 pA
Rise time (typ.) 7 μs
Terminal capacitance (typ.) 3200 pF
Measurement condition Typ. Ta=25 ℃, unless otherwise noted,
Photosensitivity: λ=720 nm, Dark current: VR=10 mV, Terminal capacitance: VR=0 V, f=10 kHz

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Spectral response


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Dimensional outline (unit: mm)


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