H11AA4S

Output Type:	Transistor with Base
Supplier Device Package:	6-SMD
Package / Case:	6-SMD, Gull Wing
Mounting Type:	Surface Mount
Operating Temperature:	-55°C ~ 100°C
Vce Saturation (Max):	400mV
Current - DC Forward (If) (Max):	100mA
Voltage - Forward (Vf) (Typ):	1.2V
Current - Output / Channel:	--
Voltage - Output (Max):	30V
Series:	--
Input Type:	AC, DC
Rise / Fall Time (Typ):	--
Turn On / Turn Off Time (Typ):	--
Current Transfer Ratio (Max):	--
Current Transfer Ratio (Min):	100% @ 10mA
Voltage - Isolation:	5300Vrms
Number of Channels:	1
Part Status:	Obsolete
Packaging:	Tube

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Optoisolators - Transistor, Photovoltaic OutputOptocouplers, also known as optoisolators, are essential electronic components designed to protect sensitive devices and systems from damage due to voltage surges, ground loops, electromagnetic interference, and other types of induced transient conditions. They serve as isolators, connecting two different circuits without any direct electrical connection. The purpose of an optocoupler is to keep the circuits completely separated from each other and still provide a reliable data or signal flow between them.The H11AA4S optoisolator is an industry standard 4-pin optocoupler device containing an input LED and output photovoltaic diode. It has a high isolation voltage rating of 6000VRMS and a wide operating temperature range from -40°C to +85°C. Its maximum transfer rate of 5MHz makes it ideal for use in many digital and analog signal processing applications.The H11AA4S optoisolator utilizes a compact photovoltaic output stage that produces an electrical output when it is exposed to light. It consists of a photo-transistor with an integrated photodiode inside a single package. When the photodiode is excited by an external light source, it emits a current which then turns on the internal photo transistor. When the internal transistor is activated, it then switches on an external electrical load. This internal photovoltaic output stage allows the device to achieve very high reliability and immunity to electrical disturbances.The working principle of the H11AA4S optoisolator is relatively simple. When input current from the input LED is applied, the internal photo-diode emits light which is then used to activate the internal photo-transistor. The activated transistor then switches on the external electrical load, completing the optoisolator’s circuit. The device provides high electrical isolation between the input and output stages, allowing the two circuits to remain separate without any unwanted interaction or interference between them.The H11AA4S optoisolator is a widely used device for many different types of applications. Its high isolation voltage rating and wide operating temperature range make it suitable for use in a variety of industries including telecommunications, industrial, medical, automotive, and instrumentation. It is also used in process control systems, data-acquisition systems, power supplies, motor control, and consumer electronics. In addition, its high transfer rate and compact design make it ideal for a wide range of digital and analog signal processing applications.In summary, the H11AA4S optoisolator offers robust electrical isolation and reliable signal transmission between circuits. Its wide range of advantages and features make it a highly versatile device that is suitable for a range of different applications. With its high performance and reliable operation, the H11AA4S optoisolator is an essential component in any modern electronic system.

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