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 12 x 12 mm
Package Ceramic
Peak sensitivity wavelength (typ.) 920 nm
Photosensitivity (typ.) 0.6 A/W
Spectral response range 320 to 1060
Dark current (max.) 500 nA
Rise time (typ.) 1.5 μs
Terminal capacitance (typ.) 300 pF
Interelectrode resistance (typ.) 10 kΩ
Measurement condition Typ. Ta=25 ℃, unless otherwise noted

Spectral response

Dimensional outline (unit: mm)

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