4N25300

Series:	--
Packaging:	Tube
Part Status:	Obsolete
Number of Channels:	1
Voltage - Isolation:	5300Vrms
Current Transfer Ratio (Min):	20% @ 10mA
Current Transfer Ratio (Max):	--
Turn On / Turn Off Time (Typ):	2µs, 2µs
Rise / Fall Time (Typ):	--
Input Type:	DC
Output Type:	Transistor with Base
Voltage - Output (Max):	30V
Current - Output / Channel:	--
Voltage - Forward (Vf) (Typ):	1.18V
Current - DC Forward (If) (Max):	100mA
Vce Saturation (Max):	500mV
Operating Temperature:	-55°C ~ 100°C
Mounting Type:	Through Hole
Package / Case:	6-DIP (0.300", 7.62mm)
Supplier Device Package:	6-DIP
Base Part Number:	4N25

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Optoisolators - Transistor, Photovoltaic OutputOptoisolators are devices used for electrical isolation between two circuits. These isolators are composed of a light source, such as an LED or laser diode, coupled to a photosensitive device such as a transistor, photovoltaic cell, photodiode, or another type of photodetector. The light source either transmits light or is interrupted by the photosensitive device, depending on the type of optoisolator.This type of optoisolator, known as a 4N25300, utilizes a transistor photovoltaic output. This optoisolator is an AC output coupling device that is used to transfer a signal optically between two circuits that are not electrically connected. This signal is created by the switching action of an input LED and is picked up by a phototransistor on the other side of the electrical isolation barrier.The 4N25300 optoisolator consists of 4 main components: an LED light source, a phototransistor, an input photodiode, and an output transistor. The LED is a light emitting diode that sends light to the phototransistor, which is the photosensor. The input photodiode is used to sense the input current. The output transistor is used to switch the light signal from the phototransistor, creating an output signal.The working principle of the 4N25300 optoisolator is simple. When a current passes through the input diode, it generates a light emission from the LED. This light activates the phototransistor, which in turn switches on the output transistor. When the phototransistor is activated, the output transistor is turned on, creating an output signal that can be utilized by the other side of the isolation barrier.The 4N25300 optoisolator is mostly used in industrial applications, such as motor control, capacitance sensing, temperature control, and in automotive applications, such as the tiny microprocessor-controlled motor drivers used in modern cars. It is also used in many other applications, such as data communications, power supplies, safety circuits, and more.The advantages of using optoisolators in industrial settings are numerous. Optoisolators offer electrical isolation, which helps to protect sensitive equipment from power surges and other damaging activities. By using optoisolators, components can be replaced without shutting down an entire system. Additionally, optoisolators can provide faster response times, more accuracy, greater cost-efficiency, and improved performance compared to other isolation techniques.The 4N25300 optoisolator offers several advantages over other optoisolator types, as well. Due to its AC output coupling, it offers greater signal amplitude, which leads to an increase in signal strength. Additionally, the device utilizes fewer components and can be easily placed onto a circuit board without any soldering. This allows manufacturers to reduce component count and saves them money in the process.Overall, the 4N25300 optoisolator is a versatile device that is used in many different applications. Due to its electrical isolation, it offers increased safety and protection from power surges and other harmful activities. Additionally, it offers improved performance, faster response times, higher signal amplitude, and greater cost-efficiency compared to other isolation techniques. This makes it the perfect choice for a variety of applications, from industrial motor control to automotive microprocessors.

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