VO215AT

Current - DC Forward (If) (Max):	60mA
Vce Saturation (Max):	400mV
Operating Temperature:	-40°C ~ 100°C
Mounting Type:	Surface Mount
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Supplier Device Package:	8-SOIC
Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Number of Channels:	1
Voltage - Isolation:	4000Vrms
Current Transfer Ratio (Min):	20% @ 1mA
Current Transfer Ratio (Max):	50% @ 1mA
Turn On / Turn Off Time (Typ):	3µs, 3µs
Rise / Fall Time (Typ):	3µs, 2µs
Input Type:	DC
Output Type:	Transistor with Base
Voltage - Output (Max):	30V
Current - Output / Channel:	50mA
Voltage - Forward (Vf) (Typ):	1V

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The VO215AT is an optoisolator from Vishay that features high isolation voltage and fast response time. It combines an infrared LED and a transistor in a single package, providing an electrically isolated feedback or control link between two circuits. It is typically used to transmit signals across a circuit, isolate inputs and outputs, or protect circuits from transient signals or noise.The VO215AT is unique in its design because it uses an optically coupled field effect switch (FET) instead of a transistor. This combination provides higher performance than a conventional Photovoltaic Output transistor optoisolator. The FET switch is especially effective for dynamic switching applications, allowing for higher speed, higher current and higher voltage than can be obtained with other optoisolators.In operation, the VO215AT uses the light generated by the LED to excite the FET switch, allowing it to switch between the on and off states. The input LED is connected to the input voltage, and the FET switch is connected to the output voltage. When the input voltage is higher than the switching threshold voltage of the FET, the FET is turned on and the output voltage is pulled to the level of the input voltage. When the input voltage is lower than the switching threshold voltage, the FET is turned off and the output voltage is pulled to ground. This allows the VO215AT to selectively transmit only the portion of a signal that exceeds the threshold voltage, while providing electrical isolation between the input and output circuits.In addition to higher performance, the VO215AT offers excellent thermal resistance, with a 1.2°C/W thermal resistance junction-to-ambient. The package is UL-recognized, and it meets ESD ratings of Class 2 (± 6 kV). The device is also RoHS compliant and is designed to withstand temperatures up to 125°C for soldering.The VO215AT is ideal for a wide range of applications, including communications, medical, industrial, and automotive. It is suitable for use in both AC and DC circuits, and it can be used to signal presence, level, position, count or other variable states. It can also be used in relay drivers, PLC analog signal transfer, contactless control applications, as well as motor and lighting control circuits.In conclusion, the VO215AT is a high-performance optoisolator that combines an infrared LED and a field effect switch (FET) in a single package. It provides high isolation voltage and fast response time, making it ideal for a variety of applications. The package is UL-recognized and meets ESD ratings of Class 2 (± 6 kV).

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