SFH 331-JK

Series:	TOPLED
Packaging:	Tape & Reel (TR)
Part Status:	Active
Sensing Distance:	--
Sensing Method:	Reflective
Voltage - Collector Emitter Breakdown (Max):	35V
Current - Collector (Ic) (Max):	15mA
Current - DC Forward (If) (Max):	30mA
Output Type:	Phototransistor
Response Time:	300ns, 150ns
Mounting Type:	Surface Mount
Package / Case:	4-LCC (J-Lead)
Operating Temperature:	-40°C ~ 100°C

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Optical Sensors - Reflective - Analog Output

The SFH 331-JK is an optical reflective analog output sensor. It is designed for sensing solutions that require a combination of reliable position detection and the highest achievable linearity and resolution. The SFH 331-JK is designed as a two-piece self-contained assembly, with a sensing head and a sampling unit.The sensing head is responsible for receiving incident light and converting it into an analog signal. It consists of a light-sensitive optical material in a small floating chamber, which is enclosed by a reflective surface. When light hits this reflective surface, it is reflected onto the chamber and is then converted into an analog voltage signal proportional to the amount of reflected light.The sampling unit comprises of a constant current source, which is used to keep the output voltage of the sensing head at a steady level over a wide input light range. It also has an amplifier and analog-to-digital converter (ADC) to convert the analog signal into a digital signal for processing.The SFH 331-JK is capable of detecting changes in the light intensity accurately and over a wide range of wavelengths, from short to long. This makes it ideal for applications such as security systems, automotive headlights, and human machine interface (HMI) applications.The SFH 331-JK is also highly durable, thanks to its robust construction. It is designed to operate in temperature extremes of -40°C to 105°C, and the reflective material is even certified for high-pressure washing. Additionally, the SFH 331-JK is capable of operating in vibrations of up to 4G, which is ideal for off-road applications.Overall, the SFH 331-JK is an ideal solution for a wide range of applications that require reliable position detection and accurate analog output. Its highly linear response, wide input light range, and its ability to operate in harsh environments make it the perfect choice for any application that requires a reliable and accurate analog output.

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