OIT29
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Catalog excerpts

OIT29 3-ch. phototransistor array 0.60mm optical pitch on plastic SMD package General Description OIT29 consists in a three elements silicon phototransistor’s monolithic array. 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 silicone resin: its transmission value is greater than 95% between 300nm and 400nm while it is very close to 100% in the range 400-900nm. The phototransistors have an antireflective coating that guarantees a good spectral bandwith (500-950nm) with a peak responsivity at 755nm. The main advantages of this device are the high uniformity of the silicon sensors in all elctro-optical parameters, due to the monolithic construction and the high optical responsivity, due to the antireflective coating deposited on the phototransistor’s areas. Applications Optical encoders Incremental encoders Optical Receivers Controls/drives Features ■ High uniformity of silicon cells ■ High transparency resin ■ High gain ■ Very small dimensions ■ Reference dots on gold layer for very precise alignment ■ Reference holes on frame for mechanical alignment Function Phototransistor A Emitter Phototransistor C Emitter Not Connected Common collector Not Connected Not Connected Phototransistor B Emitter Common collector OIT29 3-ch. phototransistor array 0.60mm optical pitch

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f According to Jedec standard J-STD-020D.1

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OIT29 MECHANICAL DIMENSIONS Units=mm Mechanical tolerances=+/-0.2mm TYPICAL PERFORMANCE CURVES Figure 1 – Output voltage Vs Temperature Figure 2 – Spectral Responsivity (hfe=1000)

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