Two-dimensional PSD


Non-discrete position sensor utilizing photodiode surface resistance


PSD (Position Sensitive Detector) is an optoelectronic position sensor utilizing photodiode surface resistance. Unlike discrete element detectors such as CCD, PSD provides continuous position data and features high position resolution and high-speed response.

- High position resolution
- Wide spectral response range
- High-speed response
- Simultaneous measurements of position and intensity
- Position is measured independent of light-spot size
- High reliability


Photosensitive area 4.7 x 4.7 mm
Package Metal
Peak sensitivity wavelength (typ.) 920 nm
Photosensitivity (typ.) 0.6 A/W
Spectral response range 340 to 1060
Dark current (max.) 5 nA
Rise time (typ.) 0.3 μs
Terminal capacitance (typ.) 45 pF
Interelectrode resistance (typ.) 10 kΩ
Measurement condition Typ. Ta=25 ℃, unless otherwise noted

Spectral response

Dimensional outline (unit: mm)

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