SFH 310

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Optical sensors, specifically phototransistors, have been used extensively in various applications since their development in the mid 20th century. The SFH310, an optical phototransistor from Siemens, has been developed exclusively for the detection of infrared radiation emitted by IR remote-control devices. This technology is relied upon in everyday consumer devices such interactive remote-controlled televisions, cable boxes, and DVD players. The SFH 310 is ideal because of its relative sensitivity to IR radiation, almost simplifying installation, and robust performance in a narrow range of temperatures. This optical sensor is specifically designed to allow a user to control multiple devices with the same remote device, eliminating the need for multiple controls in one system.

The working principle behind the SFH 310 is based on the semiconductor effects of infrared radiation. As photons are emitted from the remote-control device, the SFH 310 naturally collects and amplifies an electrical signal generated through the internal transfer of energy, caused by the presence of said irradiance. Once the infrared radiation is detected, a resulting voltage change occurs within the transistor to create a current between the base and emitter of the device. This current is responsible for activating the control circuit, thus allowing the user to take control of the desired device.

The SFH 310 has been widely adapted due to its capability to detect infrared radiation from not only standard remote-control systems, but other specialized applications as well. This versatile device is available in both an 8-pin dual in-line package (DIP) and a flat-lead leaded package (LFP). This combination allows for a wide range of flexibility in the installation and operation of the device. Additionally, the SFH 310 is also designed to work reliably between -40°C and 85°C with a recommended operating voltage of 4.5V-5.5V. To top it all off, the device is also selected to ensure excellent On/Off ratios from 10:1 , allowing for less noise and reliable operations.

In conclusion, the Siemens SFH310 is a reliable and versatile optical phototransistor perfect for the detection of infrared radiation. This device has the capability of detecting radiation from both standard remote-control devices and specialized applications. With its robust performance and flexibility of installation, the SFH 310 is sure to fit in any consumer electronic device.

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