SFH 309 FA-5

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SFH 309 Phototransistors are optical sensors with binary outputs. The sensors are designed to detect light and output a voltage that indicates the state of the light. Phototransistors are ideal for applications that require a smaller amount of light to trigger the sensor, such as sensing when a car is in the dark and turning on the headlights. The SFH 309 FA-5 Phototransistor features a high sensitivity GaAsP LED detector, an integrated Schmitt trigger and an adjustable time delay.

The SFH 309 FA-5 Phototransistor is a three-terminal phototransistor with a typical open-circuit voltage of 2.2V. It is designed to detect light with wavelengths ranging from 400 to 900 nm and has a typical rise and fall time of 1.5 μs and a typical sensitivity range of 0.05 to 0.5 lux. The integrated LED detector provides a binary output, meaning that the output is either “on” (high) or “off” (low).

The SFH 309 FA-5 Phototransiitor.s working principle is simple. It consists of an LED detector, a variable resistive load, a voltage booster and a Schmitt trigger. When light is incident on the LED detector, the energy is absorbed by the electrons in the semiconductor and converted into a current which is passed through the resistive load. The voltage booster then amplifies the current which triggers the Schmitt trigger and activates the output signal.

The SFH 309 FA-5 Phototransistor is used in a wide range of applications, such as robotics, security systems, gaming consoles, medical devices, fiber optic communications and industrial automation. The Phototransistor’s small size and low power consumption make it ideal for applications where size and power are critical. Its adjustable time delay makes it suitable for applications where a specific time delay is required for switching. Furthermore, its adjustable current output enables the user to adjust the amount of current that is output from the Phototransistor.

The SFH 309 FA-5 Phototransistor is a fast and reliable optical sensor ideal for a variety of applications. Its small size, low power consumption and adjustable time delay make it a versatile sensor that can suit many different needs. Its adjustable current output enables the user to control the amount of current that is output from the Phototransistor, and its versatility and reliability make it a great choice for a variety of applications.

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