16-ch. phototransistor array 0.60mm optical
pitch on plastic SMD package, cross shape
OIT7C consists in three silicon phototransistor’s monolithic arrays. The two arrays of six devices are placed on top and bottom of the device, they represent each bit of the encoder disc. A further array of four devices is placed in the center. It can be used as light sensor or as adding bits, increasing the resolution of the encoder.
The phototransistors have a common collector, every emitter is available as a pad. The pitch of the silicon arrays is 0.6 mm, while the component electrical pitch is 1.27 mm. The active area of each element is 0.2 x 0.45 mm. The encapsulant is an high quality microelectronic transparent resin, its transmission value is 100% in the range 300-900nm.
The advantages of this product are the high uniformity of the silicon sensors, due to the monolithic construction and the high optical responsivity, due to the antireflective coating deposited on the phototransistor’s areas.
The packaging method is oriented to industrial harsh applications, which means high temperature range, high stability in time and very high uniformity of the silicon cells.
12-13 bit absolute encoders
High uniformity of silicon cells
High transparency resin
Designed to meet industrial specifications
Reference holes for precise mounting
Custom design available
0.6 mm optical pitch (0.68 mm on request)