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Si photodiodes S2281 series

Si photodiodes S2281 series
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Si photodiodes with BNC connector The S2281 series is Si photodiodes sealed in a metal package with a BNC connector. This conﬁguration allows easy connection to Hamamatsu C9329 photosensor ampliﬁer (The S2281-01 has a large terminal capacitance which may cause a gain peaking to occur when the C9329 is used with the gain set to the “M” range.). Two different spectral response characteristics are provided and the large photosensitive area makes the S2281 series well suited for optical power meters. A variant type S9219 with a visual compensation ﬁlter is also available. Hamamatsu also provides the E2573 BNC-BNC coaxial cable (length: 1 m) as an option. Metal package with BNC connector Analytical instruments High sensitivity Optical measurement equipment High reliability Structure Parameter Photosensitive area size Photosensitive area Package Window material S2281-01 ϕ11.3 100 Metal package with BNC connector Quartz glass Absolute maximum ratings Parameter Reverse voltage Operating temperature Storage temperature Symbol VR max Topr Tstg Note: Exceeding the absolute maximum ratings even momentarily may cause a drop in product quality. Always be sure to use the product within the absolute maximum ratings. Electrical and optical characteristics (Ta=25 °C, unless otherwise noted) Parameter Spectral response range Peak sensitivity wavelength Photosensitivity Short circuit current Dark current Shunt resistance Rise time Terminal capacitance Noise equivalent power

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Spectral response Dark current vs. reverse voltage (Typ. Ta=25 °C) Dark current Terminal capacitance vs. reverse voltage 10 nF Terminal capacitance

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Dimensional outlines (unit: mm) S2281, S2281-01 Glass window BNC: UG-625B/U Core: cathode Case: anode Precautions against UV light exposure ∙ When UV light irradiation is applied, the product characteristics may degrade. Such examples include degradation of the product’s UV sensitivity and increase in dark current. This phenomenon varies depending on the irradiation level, irradiation intensity, usage time, and ambient environment and also varies depending on the product model. Before employing the product, we recommend that you check the tolerance under the ultraviolet light environment...

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