OP603TX

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Optical sensors, such as phototransistors, are used to detect the presence, absence, or intensity of light. The OP603TX is an example of an optical phototransistor that can do all of these things. This article will discuss the application field of the OP603TX and its working principle.

Application Field

The OP603TX is a general-purpose optical phototransistor with an integrated model. It is suitable for switch and control applications to sense the presence or absence of a light, such as automation and optical sorting applications. It is typically used in combination with a light emitting diode (LED) to detect and control the presence or absence of objects, such as in the field of product sorting.

The OP603TX is also used in handicapped assistance, lighting control, position sensing, industrial automation, obstacle detection, and other applications. It is also used in robotics applications, such as autonomous navigation, obstacle detection, and visual guidance.

The OP603TX is easy to use, has high reliability, and its usage temperature range is wide. It allows for high-sensitivity detection, making it suitable for optical sensing applications.

Working Principle

The OP603TX has an integrated LED and phototransistor. When a light source, such as a lamp or laser, is shone on the OP603TX, the LED emits light, which enters the phototransistor through its photosensitive area. The phototransistor then converts this light energy into an electric signal, which is then amplified and converted into a voltage signal.

The OP603TX phototransistor has a light sensing range that is adjustable from 0.2 to 100 lux. The current output is adjustable from 1 mA to 10mA. The dark current is the current output under a certain light intensity and it is extremely low typically, generally no more than 100nA. The phototransistor’s light intensity response time is fast, typically less than 100μs.

When the light intensity is below a certain level, the output voltage of the OP603TX is low (close to zero). When the light intensity reaches a certain level, the output voltage will increase rapidly. The OP603TX is mainly used in control applications and can be used as an output port of a microcontroller for a specific action.

Conclusion

The OP603TX is an optical phototransistor with an integrated LED and phototransistor that is suitable for switch and control applications. It can detect and control the presence or absence of objects and is used in various applications, such as automation, lighting control, battery charging, and handicapped assistance. Its main features are high sensitivity, fast response time, low dark current, and adjustable current output.

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