OPB890P51

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Optical sensors have been implemented in a wide range of applications, from industrial automation to motion control. One of the most popular categories of optical sensors are photointerrupters, and the OPB890P51 is an example of this type of device.

A photointerrupter is a form of optical switch which detects the presence of an object in its path. The OPB890P51 belongs to the slot type of photointerrupter, where two opposing slotted elements detect the passage of an object (e.g. card, pin etc.), by means of an interruption of an LED\'s light. This interruption is then detected by a phototransistor, providing logic levels as the output.

The key features of the OPB890P51 are as follows:

• Package type: DIP and SOP
• Slot length: 8.8mm
• Input voltage range: 3V - 24V
• High isolation voltage: 5kV or 1kV (depending on package type)
• High output current: 200mA
• Transistor output

This device is suitable for a wide range of applications, including paper detection, reflection sensors, card sensing and object detection. The wide voltage range makes it suitable for use in both industrial and consumer applications.

The working principle of the OPB890P51 is relatively simple. When the object blocks the transmission of light between the LED and phototransistor, the output of the phototransistor is pulled low, indicating the presence of the object in the slot. When the object is removed, the output of the phototransistor will rise to its default state, indicating that the object has moved away from the slot.

The OPB890P51 is a cost-effective and reliable solution for many optical sensing applications. It is easy to install and operate, and its small size and low power consumption make it an ideal choice for space-constrained applications. In addition, the OPB890P51\'s high output current and wide voltage range make it suitable for use in a variety of applications, from industrial automation to consumer electronics.

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