SF2-EH12

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Photointerrupters are optical sensors known for their ability to detect the presence or absence of an object in a particular range. SF2-EH12 is a slot type photointerrupter with logic output from Panasonic. It features a 2.7mm wide sensing gap and uses an exquisite plug-in structure. The SF2-EH12 operates on an input voltage of 24 V DC by which it can provide a maximum switching frequency of 50 khz.

The application field of SF2-EH12 sensor includes color sensors, position sensors, optical switches, rotary sensors and detecting broken wire. Its ability to detect minor motion creates a demand in the manufacturing industry, medical sector, and testing instrumentation. Its small size allows for space-saving designs in microcomputers or terminals.

The working principle of the SF2-EH12 sensor is based on an emitter and a phototransistor. When no object is present in front of the gap between the emitter and receiver, the phototransistor gets no signal and the output becomes low. When an object passes located in the range in front of the gap, the emitter reflects light to the phototransistor and the output becomes high.

The SF2-EH12 features a self-clinch design for secure mounting, making it suitable for areas where secure mounting is required. With an extremely fast response time of 1.6μs, even transient objects can be reliably detected. The slot type photointerrupter\'s casing is made of a robust UV-resistant plastic, making it suitable for exposure to direct sunlight.

The SF2-EH12 sensor is also equipped with reverse voltage protection functions that protect against reverse polarity connections. With its micro millimeters dimension and logic outputs, the SF2-EH12 is an excellent choice for applications that require extremely small size.

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