Si photodiode


Photodiode with interference filter for monochromatic light (275 nm) detection

The S12742-275 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 275 nm typ. The S12742-275 can be customized to support other peak sensitivity wavelengths such as 340 nm, 560 nm.

- Si photodiode with interference filter
- Monochromatic light (275 nm) detection

Photosensitive area 3.6 × 3.6 mm
Number of elements 1
Package Metal
Cooling Non-cooled
Reverse voltage (max.) 5 V
Spectral response range 271 to 279 nm
Peak sensitivity wavelength (typ.) 275 nm
Photosensitivity (typ.) 0.01 A/W
Dark current (max.) 25 pA
Rise time (typ.) 1 μs
Terminal capacitance (typ.) 500 pF
Noise equivalent power (typ.) 2×10-13 W/Hz1/2
Measurement condition Typ. Ta=25 ℃, Photosensitivity: λ=220 nm, Dark current: VR=10 mV, Terminal capacitance: VR=0 V, f=10 kHz, Noise equivalant power: VR=0 V, λ=λp, unless otherwise noted

Spectral response

Dimensional outline (unit: mm)

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