Product Center Home Product Center Intelligent Sensing 200/250/350/500um InGaAs PD Photodiode Chip The 200/250/350/500 μm InGaAs PD is a forward-illuminated photodiode chip with a center wavelength of 1550 nm, a conductive substrate, one electrode at 200/250 μm, four electrodes at 350/500 μm, and a photosensitive area size of 200/250/350/500 μm. Product Features High Responsiveness Ultra-low Dark Current Application Areas Optical Power Meter Instrumentation Product Performance Indicators