EL817(S)(A)(TB)-V

Output Type:	Transistor
Supplier Device Package:	4-SMD
Package / Case:	4-SMD, Gull Wing
Mounting Type:	Surface Mount
Operating Temperature:	-55°C ~ 110°C
Vce Saturation (Max):	200mV
Current - DC Forward (If) (Max):	60mA
Voltage - Forward (Vf) (Typ):	1.2V
Current - Output / Channel:	50mA
Voltage - Output (Max):	35V
Series:	--
Input Type:	DC
Rise / Fall Time (Typ):	4µs, 3µs
Turn On / Turn Off Time (Typ):	--
Current Transfer Ratio (Max):	160% @ 5mA
Current Transfer Ratio (Min):	80% @ 5mA
Voltage - Isolation:	5000Vrms
Number of Channels:	1
Part Status:	Discontinued at Digi-Key
Packaging:	Tape & Reel (TR)

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The EL817 (S)(A)(TB)-V optoisolator is a transistor-based transformer photovoltaic output device that provides electrical isolation between input and output circuits. It provides the advantages of higher electrical noise immunity and reduces the risk of combustion due to lightning strikes, thus enhancing the safety of the overall system. It is widely used in electric industrial control, precision instrumentation, medical equipment, and automotive systems.The EL817 (S)(A)(TB)-V features an LED optically coupled with a phototransistor detector, and a power transistor to provide isolation between the input and output. The output circuit is powered by an independent dedicated power supply, which is connected to the output circuit through two pins on the optoisolator. The input of the optoisolator is powered by an external power supply and is connected to the input circuit. The LED inside the device is driven by current from the input line, which causes the photon detector to send out a signal which is further amplified by the power transistor and sent to the output board. The working principle of the EL817 (S)(A)(TB)-V optoisolator is based on the physical phenomenon of the phototransistor, which uses light to switch a current from one terminal of the transistor to another. The EL817 (S)(A)(TB)-V optoisolator takes advantage of this phenomenon to establish a connection between two circuits while providing complete electrical isolation.When a voltage is applied between the input pins of the optoisolator, current flows through the LED circuit and produces light which is detected by the phototransistor. This detection is used to switch the power transistor on and off, thus allowing the current from the input to pass through the output circuit. This switching action isolates the input and output circuits, protecting the output circuit from electric noise, lightning strikes, and other dangerous electric conditions.The EL817 (S)(A)(TB)-V optoisolator is also equipped with a protective circuit which prevents damage due to overcurrent or excessive voltage, ensuring the safety and stability of the system. In addition, the optoisolator also offers high levels of noise immunity, making it an ideal choice for applications in electric industrial control, precision instrumentation, medical equipment, and automotive systems.The EL817 (S)(A)(TB)-V optoisolator is an ideal solution for a wide range of applications that require electrical isolation, increased noise immunity, and protection against dangerous electric conditions. It is a robust and reliable device that can be used in a variety of systems to ensure maximum safety and efficiency.

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