VEMD10940F Sensors, Transducers

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Wavelength:	920nm
Color - Enhanced:	--
Spectral Range:	780nm ~ 1050nm
Diode Type:	PIN
Responsivity @ nm:	--
Response Time:	100ns
Voltage - DC Reverse (Vr) (Max):	60V
Current - Dark (Typ):	1nA
Active Area:	0.23mm²
Viewing Angle:	150°
Operating Temperature:	-40°C ~ 100°C
Mounting Type:	Surface Mount
Package / Case:	2-SMD, No Lead

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Introduction
The VEMD10940F optical sensor photodiode is a miniature passive infrared (PIR) detector. It is used for the sensing of environmental change in visible and infrared radiation. It is made of a low-noise Gallium Arsenide material with a high responsivity. Its applications include fire alarms, bio-sensing, thermal sensors, night vision devices, and many other commercial and consumer applications.Architecture of VEMD10940F
The VEMD10940F consists of a sensing element, an optical window, a protective plate and a connection lead. The sensing element consists of a semiconductor material such as Gallium Arsenide. It converts radiant energy into an electrical signal which is then processed by the electronics within the sensor. The optical window lets in the radiation into the sensor. It is a transparent material such as quartz or glass which allows the incident radiation to mate. The protective plate surrounds the sensing element and prevents the radiation from leaking out. The connection lead is the electrical connection between the sensor and the associated electronics.Applications of VEMD10940F
The VEMD10940F is used in a wide range of applications. It is commonly used as the sensing element in commercial and consumer fire alarms, security systems, and data processing equipment. It is also used in medical applications such as bio-sensing and thermal sensing. It is also used in night vision devices for surveillance purposes and in automotive headlights for judging the amount of illumination of an area. Operation Principle of VEMD10940F
The operation of the VEMD10940F is based on the principle of radiant energy conversion. It works by measuring the amount of radiant energy that is incident on the sensing element, converting it into an electrical signal, and then relaying this signal to the associated electronics. When a beam of radiation such as light is incident on the sensing element, it is absorbed by the semiconductor material. The absorbed energy is then converted into an electrical signal which is then processed by the electronics. This process is repeated for each incident beam of radiation.The output of the sensing element is then processed by the associated electronics and used to determine the environment. This could be used to detect motion, temperature changes, or a wide range of other environmental parameters. Conclusion
The VEMD10940F optical sensor photodiode is a miniature passive infrared (PIR) detector. It is made of a low-noise Gallium Arsenide material with a high responsivity and is used for sensing environmental change in visible and infrared radiation. Its applications include fire alarms, bio-sensing, thermal sensors, night vision devices, and many other commercial and consumer applications. Its operation is based on the principle of radiant energy conversion. It works by measuring the amount of radiant energy that is incident on the sensing element, converting it into an electrical signal, and then relaying this signal to the associated electronics.

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