EL817(S1)(TU)

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Number of Channels:	1
Voltage - Isolation:	5000Vrms
Current Transfer Ratio (Min):	50% @ 5mA
Current Transfer Ratio (Max):	600% @ 5mA
Turn On / Turn Off Time (Typ):	--
Rise / Fall Time (Typ):	4µs, 3µs
Input Type:	DC
Output Type:	Transistor
Voltage - Output (Max):	35V
Current - Output / Channel:	50mA
Voltage - Forward (Vf) (Typ):	1.2V
Current - DC Forward (If) (Max):	60mA
Vce Saturation (Max):	200mV
Operating Temperature:	-55°C ~ 110°C
Mounting Type:	Surface Mount
Package / Case:	4-SMD, Gull Wing
Supplier Device Package:	4-SMD

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Optoisolators - Transistor, Photovoltaic Output – EL817 (S1)(TU)EL817 (S1)(TU) is an optoisolator which is used for providing electrical isolation between the input and the output of a circuit. It consists of a light-emitting diode (LED) which is the input, and a phototransistor which is the output device. The EL817 (S1)(TU) optoisolator design exploits the properties of the LED and a phototransistor in order to provide electrical isolation between different circuits.The input device of the EL817 (S1)(TU) isolator is a LED. LED stands for Light-Emitting Diode, it is a semiconductor which when energized emits light in the visible range of the electromagnetic spectrum. The light produced by the LED is converted into an electrical current using a phototransistor which is the output device of the optoisolator. A phototransistor is made up of two-junction transistors, the emitter and the collector, and a photo-sensitive base.The principle behind the EL817 (S1)(TU) optoisolator is based on the concept of photoconductivity. This is a phenomenon where the electrical resistance of a material changes with the amount of light absorbed by that material. In the case of the EL817 (S1)(TU), the light emitted from the input LED is absorbed by the photo-sensitive base of the phototransistor at the output, resulting in a current flow between the emitter and collector of the phototransistor. This current is proportional to the amount of light that is absorbed by the phototransistor base.The EL817 (S1)(TU) has a wide range of applications. It can be used as an isolation switch in electrical circuits, in order to prevent the unwanted transmission of electrical signals from one circuit to another. It can also be used in communication systems as it can convert optical signals into electrical signals, allowing for the transmission of information across electrical isolators. The EL817 (S1)(TU) is also suitable for optical sensing applications as it can detect direction of light and convert it into an electrical signal, which can then be used in automation systems or robotic applications.In conclusion, the EL817 (S1)(TU) is an optoisolator which is used for providing electrical isolation between the input and the output of a circuit. It consists of a light-emitting diode (LED) which is the input, and a phototransistor which is the output device. The EL817 (S1)(TU) has a wide range of applications, such as isolation switches in electrical circuits, communication systems, and optical sensing applications. The optoisolator is based on the concept of photoconductivity, where the electrical resistance of a material changes with the amount of light absorbed by that material. This allows the EL817 (S1)(TU) to provide electrical isolation between different circuits, as well as detect direction of light and convert it into an electrical signal.

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