Si photodiode


A scintillator can be mounted directly on the chip.

The S12497 is a Si photodiode suitable for non-destructive inspection of baggage and the like and general industrial measurement. As it is a back-illuminated photodiode, photosensitive area does not have wires, and therefore a scintillator can be mounted directly on the photodiode.

- Spectral response range : 400 to 1100 nm
- Photosensitive area: 9.5 × 9.5 mm - Easy scintillator mounting


The chip of this product is not sealed and is exposed.
Parts such as electrodes on the chip are not protected by an enclosure or window and so require especially strict care during handling compared to ordinary products.
Before using this product, always read “Precautions / Unsealed products” described below.


Photosensitive area 9.5 × 9.5 mm
Number of elements 1
Package PWB with pins
Cooling Non-cooled
Reverse voltage (max.) 10 V
Spectral response range 400 to 1100 nm
Peak sensitivity wavelength (typ.) 920 nm
Photosensitivity (typ.) 0.57 A/W
Dark current (max.) 200 pA
Rise time (typ.) 15 μs
Terminal capacitance (typ.) 950 pF
Measurement condition Typ. Ta=25 ℃, Photosensitivity: λ=920 nm, Dark current: VR=10 mV, Terminal capacitance: VR=0 V, f=10 kHz, unless otherwise noted

Spectral response

Dimensional outline (unit: mm)

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