RPT-34PB3F

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Optical Sensors - Phototransistors

Phototransistors are optical sensor devices that use a phototransistor to detect and respond to an optical input. The phototransistor is a semiconductor device that, when exposed to light or other electromagnetic radiation, will produce a current that can be used to power a circuit. This type of sensor is commonly used in a variety of applications, such as light-sensitive switches, proximity sensors, and infrared detectors.

RPT-34PB3F Phototransistor

The RPT-34PB3F is an optically-sensitive phototransistor designed for applications where a precise level of light is needed for precise operation. The device features a wide-angle beam and a 150mV peak-to-peak sensitivity. It operates at a fast response time of 6µs, allowing for high-speed operation. The phototransistor is manufactured using a reliable, high-purity silicon substrate which helps to ensure long-term operation. The device is also RoHS compliant, making it environmentally safe for use.

Application Fields

The RPT-34PB3F phototransistor is suitable for a wide variety of applications. It can be used as a light-sensitive switch, such as in automated lighting systems or equipment control systems. Additionally, the device is suitable for building occupancy sensing or presence detection. It can also be used in home automation systems, such as for automatically turning on the lights when someone approaches or automatically turning off the lights when no one is in the room.

Working Principle

The RPT-34PB3F phototransistor uses a silicon substrate that contains two regions, an emitter and a collector. When light is shined onto the substrate, it causes the electrons in the emitter region to become excited. This causes a polarization effect as the electrons flow from the emitter to the collector. The resulting electric current causes a voltage to be generated across the collector-emitter, which can be used as a signal for the device to control or sense external conditions.

Conclusion

The RPT-34PB3F is an optically-sensitive phototransistor designed for applications where precision and reliability are essential. The device features a wide-angle beam and fast response time, making it suitable for numerous applications, such as light-sensitive switches, occupancy sensing, and home automation. The phototransistor uses a silicon substrate containing an emitter and collector that respond to light, creating a voltage difference between them that can be used as an external control or sensing signal.

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