4N55TXV

Output Type:	Transistor with Base
Base Part Number:	4N55
Supplier Device Package:	16-DIP
Package / Case:	16-DIP (0.300", 7.62mm)
Mounting Type:	Through Hole
Operating Temperature:	-55°C ~ 125°C
Vce Saturation (Max):	--
Current - DC Forward (If) (Max):	20mA
Voltage - Forward (Vf) (Typ):	1.55V
Current - Output / Channel:	8mA
Voltage - Output (Max):	18V
Series:	--
Input Type:	DC
Rise / Fall Time (Typ):	--
Turn On / Turn Off Time (Typ):	400ns, 1µs
Current Transfer Ratio (Max):	--
Current Transfer Ratio (Min):	9% @ 16mA
Voltage - Isolation:	1500VDC
Number of Channels:	2
Part Status:	Active
Packaging:	Tube

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Optoisolators - Transistor, Photovoltaic Output

Optoisolators, which are also known as optocouplers and photocouplers, are devices used in electronics to isolate a low-voltage signal from a high-voltage circuit. The 4N55TXV optoisolator is a particular type of optoisolator, distinguished from other optoisolators by its transistor photovoltaic output. This article will explain the application fields of the 4N55TXV and its working principle. The 4N55TXV is primarily used for applications that require a stable, isolatable boundary between source and destination circuits, such as in electrical circuits that involve multiple switch controls, motors, and power supplies. For example, it can be used in industrial electronics to isolate a low voltage motor control from a high voltage main power supply, in communications systems to isolate a low voltage communications link from a high voltage radio transmitter, or in automated systems to isolate a low voltage control system from a high voltage AC power supply.The working principle of a 4N55TXV optoisolator is based on the idea of photovoltaic output. Inside the optoisolator are a number of elements working together to create a pressure-sensitive triggering system. The key components of the 4N55TXV are a phototransistor, a photoresistive layer, and a pair of electrodes.When the 4N55TXV is exposed to light, the photoresistive layer on the internal components converts the light into electrical current, and the current is then directed into the electrodes connected to the transistor. This instantly triggers a load to be activated or deactivated, depending on the application. The load is set to either “on” or “off” based on signals received from the control circuit. As the entire circuit is electrically isolated, the load is termed to have a photovoltaic output. The 4N55TXV’s automated triggering feature makes it useful for modern control systems that require fast and secure switching. Its optoelectronic isolation ensures high-voltage signals are not passed onto the system, protecting designs from failures due to over-amperage or over-voltage problems. Similarly, it ensures only low-voltage signals are sent to the high-voltage output circuit, further preventing electronic leakage and component damage. Moreover, the 4N55TXV’s optoelectronic isolation makes it ideal for industrial automation systems that require intense vibration resistance. In summary, the 4N55TXV optoisolator is a versatile and easy to use tool with many practical applications. Its photovoltaic output and optoelectronic isolation make it an ideal choice for modern control systems that require fast and secure switching. Whether it is used to provide electrical isolation for industrial control circuits, communications systems, or automated applications, the 4N55TXV optoisolator is a reliable and efficient choice.

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