S12742-254Si photodiode


Datasheet [159 KB/PDF]

Photodiode with interference filter for monochromatic light (254 nm) detection


The S12742-254 uses an interference filter for its window and is sensitive only to monochromatic light. The spectral response width is extremely narrow at 10 nm (FWHM), allowing accurate photometry without any effects of stray light. The peak sensitivity wavelength is 254 nm typ. The S12742-254 can be customized to support other peak sensitivity wavelengths such as 340 nm, 560 nm, and 650 nm.


- Si photodiode with interference filter
- Monochromatic light (254 nm) detection

Dimensional outline (unit: mm)


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Spectral response


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Photosensitive area 3.6 × 3.6 mm
Number of elements 1
Package Metal
Cooling Non-cooled
Reverse voltage (max.) 5 V
Spectral response range 252 to 256 nm
Peak sensitivity wavelength (typ.) 254 nm
Photosensitivity (typ.) 0.018 A/W
Dark current (max.) 25 pA
Rise time (typ.) 1 μs
Terminal capacitance (typ.) 500 pF
Measurement condition Typ. Ta=25 ℃, unless otherwise noted,
Photosensitivity: λ=254 nm, Dark current: VR=10 mV, Terminal capacitance: VR=0 V, f=10 kHz

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