EE-SX951P-R 1M

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Photointerrupters are a type of optical sensor used to detect the presence of a physical obstruction. They use a beam of light to detect the interruption of the beam. The EE-SX951P-R 1M belongs to this class of sensors, specifically to the slot type that uses a transistor output. This device is especially useful in applications such as detection of transparent objects, motion sensors, gear wheels, pulse frequencey, counting, and security systems.

This specific model consists of infrared LED and an NPN phototransistor mounted in a single surface mount package and embedded in a plastic housing. The infrared LED emits an invisible beam and when an object interrupts it, the phototransistor switches on, starting a flow of current. It encompasses a distance of 5 mm, with a maximum power dissipation of 150 mW, a recommended operating temperature ranging from -25 °C to +70°C, a forward current of 20 mA, and a collector-emitter voltage of 30V. It is compatible with surface-mount technology and its package height is 7.2 mm.

The EE-SX951P-R 1M has four pins, numbered in sequence. The first one corresponds to the emitter (E) of the phototransistor and is connected to the ground wire. The third pin is the collector (C) of the phototransistor and is connected to the power supply. The second pin is the return wire from the power supply. Lastly, the fourth pin controls the LED circuit current flow. Since it is a normally open type, the phototransistor is normally turned off while the LED is turned on. When the optical pathway is blocked, the phototransistor turns on, sending a signal through the output wire.

This model is appropriate for applications in which a compact sensor is required. The LED current is constant during the operation and it is possible to modulate the output signal by adjusting the current of the LED. Additionally, the EE-SX951P-R 1M has a high speed response and a stable on/off ratio. It is also low power consumption and the LED current can be adjusted by resistor.

In conclusion, the EE-SX951P-R 1M is a powerful and reliable optical sensor for a wide range of applications. It is suitable for detection of transparent objects, motion sensors, gear wheels, pulse frequencey, counting, and security systems. Its advantages include a fast response, stability, low power consumption, and the ability to adjust the LED current. Thus, it is an ideal choice for any application where a small but reliable sensor is required.

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