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Description
Optocoupler
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4N35 Optocoupler Description
4N35 is a Standard Single Channel Phototransistor Coupler manufactured by Vishay Industries, which falls in the optocoupler family which include 4N36/4N37/4N38 couplers.The 4N35 optocoupler consists of gallium arsenide infrared light emitting diode and a silicon NPN phototransistor.This coupler is an Underwriters Laboratories (UL) listed to comply with a 5300 VRMS isolation test voltage. The above isolation performance is accomplished through Vishay double molding isolation manufacturing method.
These isolation processes and the Vishay ISO9001 quality process results in the highest isolation performance available for a commercial plastic phototransistor optocoupler. The device 4N35 is available in lead formed configuration suitable for surface mounting and are available either on tape and reel, or in standard tube shipping containers.
Pin Configuration
The max collector-emitter voltage of the phototransistor is 30V and max collector-emitter current is 150mA. However, the collector-emitter saturation voltage is from 0.14 to 0.3. Normally the saturation voltage of transistor is 0.6 or 0.7 volts but 0.3 volts is an ideal saturation voltage for applications where low voltage saturation is required.
As regarding the IR LED characteristics, the max forward current is 60 milliampere and max power dissipation is 120 milliwatt. Pin3 is labeled with “NC” which means the pin3 have not connection with the internal circuitry
Specifications and features
● Package Type: 6 Pin Dip & SMD
● Transistor Type: NPN Photo Transistor
● Photo Transistor Max Collector Current (IC): 150mA
● Photo Transistor Max Collector-Emitter Voltage (VCEO): 30V
● Photo Transistor Collector-Emitter Saturation Voltage: 0.14 to 0.3
● Photo Transistor Max Emitter-Collector Voltage (VECO): 7V
● Photo Transistor Max Collector Dissipation (Pc): 150 Milliwatt
● LED Max Reverse Voltage (VR): 6V
● LED Max Forward Current: 60 Milliamperes
● LED Max Power Dissipation: 120 Milliwatts
● Max Operating & Storage Temperature Should Be: -55 to +100 Centigrade for Operating & -55 to +150 for Storage.
Working Principle of 4N35
Using 4N35 optocoupler is very easy, the device contains two parts or components an IRLED and a Phototransistor, the LED Anode pin can be connected with the output of the device you are operating or working on (for example any IC or Microcontroller) and the cathode pin of the LED should be connected with the ground of that device, this LED should be handled same as you handle any other LED for example you have to use a current limiting resistor too. When the output of the device goes high the LED will become switched ON and the IR light with be detected by the photo transistor making it saturated or switched ON hence the collector and emitter pins will become shorted and as a result any wire connected with the pin 4 and 5 will be connected with each other. The internal phototransistor can also be controlled like a normal BJT transistor, the pin6 is connected with the base of the transistor and you can also use pin6 to control the transistor.
Application of 4N35
4N35 optocoupler can be used for variety of general-purpose requirements in electronic circuits. For example, you can use it in electronic circuits to save the circuits, ICs and other components from voltage surge or voltage spikes which damages the components. Other than this it can also be used for isolation in electronic circuits. You can also use to detect voltage in AC and DC circuits, at the output of microcontroller Chips, controlling high power transistors, high voltage devices etc.
● Isolation in circuits
● Microcontrollers output to control devices
● Power supplies and chargers
● Digital application circuits
● Telecommunication Applications / Circuits
● AC Isolation Circuits
● AC Detector Circuits
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10000 buyer reviews from United States
Jason Adams
Length of registration:7 years
I recently purchased 4N35V components from Utsource, and I am very pleased with the qu of the product. The components are well-made and perform as expected. I would highly recommend Utsource as a supplier of electronic components.
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03/17/2023
Teknosald Vjen
Length of registration:5 years
Very satisfied with
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01/15/2019
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4N35
4N35 has several brands around the world that may have alternate names for 4N35 due to regional differences or acquisition. 4N35 may also be known as the following names:
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