SFH 3605-3/4-Z

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Optical Sensors, such as Phototransistors, are used to measure and detect light, commonly used in optical and biological sensing applications. The SFH 3605-3/4-Z is a phototransistor designed to detect light with a wavelength range of 375 to 950 nm, making it suitable for a wide range of sensing and detection uses.

In their simplest forms, phototransistors are made of three parts: a base, an emitter, and a collector. The base of a SFH 3605-3/4-Z is a p-type semiconductor, while the rest of the sensor is made up of an n-type semiconductor. The base-emitter junction of the phototransistor has a built-in potential difference, which creates a current flow when the phototransistor is exposed to light. This current flow can be detected and measured by a control circuit, allowing the device to be used as an electronic switch.

In the case of the SFH 3605-3/4-Z, the device is encapsulated in a black epoxy body with transparent epoxy lens. The phototransistor has an active area of 8.4 mm2, with a peak spectral sensitivity at 860 nm. The current gain varies between 8-30, with a maximum collector current of 10 mA. The SFH 3605-3/4-Z is also capable of being operated between -40 to +85°C.

When used for detection purposes, the SFH 3605-3/4-Z can be used in a variety of situations. It is suitable for line width and index sensing, reflection sensing, and speed detection. It can also be used as an over and under detectors, and can be integrated into robots and other automated systems for detection and navigation purposes. In addition, the phototransistor can be used to detect the presence of liquid substances, or to detect changes in color in a wide range of environments.

The SFH 3605-3/4-Z is also suitable for use in security applications. The device can be operated in beam-break detection mode, in which it is used to detect the intrusion of an object into its detection area. This function makes the phototransistor useful for door activation systems, motion detectors, burglar alarms, and even CCTV surveillance applications.

The SFH 3605-3/4-Z is a versatile phototransistor, capable of being used in a wide range of applications. Its ability to detect light in a wide range of wavelengths makes it suitable for a variety of detection tasks, and its small size and low power consumption make it an ideal choice for a range of applications. With its easy to use design, the SFH 3605-3/4-Z phototransistor is an excellent choice for sensing, detection, and security applications.

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