Output Type:	Transistor
Supplier Device Package:	4-DIP
Package / Case:	4-DIP (0.400", 10.16mm)
Mounting Type:	Through Hole
Operating Temperature:	-55°C ~ 100°C
Vce Saturation (Max):	200mV
Current - DC Forward (If) (Max):	50mA
Voltage - Forward (Vf) (Typ):	1.2V
Current - Output / Channel:	50mA
Voltage - Output (Max):	70V
Series:	--
Input Type:	AC, DC
Rise / Fall Time (Typ):	2.4µs, 2.4µs
Turn On / Turn Off Time (Typ):	--
Current Transfer Ratio (Max):	150% @ 1mA
Current Transfer Ratio (Min):	50% @ 1mA
Voltage - Isolation:	5300Vrms
Number of Channels:	1
Part Status:	Obsolete
Packaging:	Tube

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Optoisolators - Transistor, Photovoltaic Output

Optoisolators are optoelectronic devices, often referred to as optocouplers, that provide electrical isolation between two terminals without the need for electrical connections. Optosolators, such as the H11AA814A300W, have two independent units: a photovoltaic output module and a transistor output module. This component can be used to effectively isolate voltage or current signals, preventing noise, transient, and other EMI disturbances from the primary side to the secondary side of the circuit.

Photovoltaic Output Module

The photovoltaic output module is comprised of a photo diode, an LED, and associated circuitry. The LED emits light that is detected by the photodiode, creating a current signal that can be used to provide a voltage reference or to drive a transistor module. When the voltage reference is applied to the photodiode, a photocurrent is generated, which is converted to a voltage that is applied to the transistor output module. Generally, the current generated within the photovoltaic output module is much smaller than the current produced by a transistor module, which allows it to be used for low-power applications.

Transistor Output Module

The transistor output module is comprised of two transistors, a phototransistor, and a field effect transistor (FET). The phototransistor converts the current generated by the photovoltaic output module to a voltage, which is used to drive the FET. The FET controls the electrical signals passed from the primary side to the secondary side of the circuit, providing electrical isolation between the two. This mechanism allows the original signal to remain unaffected by any noise, transient, or EMI disturbances on the primary side, and provides protection for the secondary side from being affected by the primary side.

Application and Working Principle

The H11AA814A300W optoisolator can be used in a wide range of applications, such as motor control, industrial communication, and power supply control. It is also suitable for data transmission, signal conditioning, and logic control applications.The optoisolator works by detecting the current generated by the photovoltaic output module, converting it to a voltage, and then amplifying the voltage to control the secondary side of the circuit. This type of optoisolator is especially well-suited for low power applications, as it does not rely on a transistor to generate a large current. Instead, the signal amplification is done through the phototransistor and FET, allowing for much more precise control of the signal.The H11AA814A300W optoisolator is a great choice for many applications, due to its ability to provide electrical isolation and signal amplification. It is also a low cost and low power option, making it ideal for a wide range of applications.

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