6N138S(TB)

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Optoisolators, also known as optocouplers or photocouplers, are electrical components that provide electrical isolation while transmitting electrical signals between two circuits. The 6N138S (TB) optoisolator belongs to a category known as Transistor, Photovoltaic Output. These optoisolators use a photovoltaic cell to control the output. This makes it ideal for applications that require fast switching speeds, noise immunity, and superior voltage isolation.

Application Field

The 6N138S (TB) optoisolator is mainly used in secure communications where maximum data integrity is of utmost importance. It is ideal for isolating noisy circuits, and it also has excellent noise immunity and protection against electrostatic discharge. It is suitable for low-voltage AC/DC applications as well as high-speed signal transmission and data conversions.

It is commonly used in industrial automation, industrial control, power supplies, data processing, and for monitoring and controlling digital logic signals. Additionally, it is often used in automotive, medical, aerospace, and military applications. It can also be used in medical devices, as well as in telecommunications, security, and audio systems.

Working Principle

The 6N138S (TB) optoisolator consists of an LED and a photo transistor, contained within a single package. When the LED is stimulated with a current, it emits photons that are then absorbed by the phototransistor. The phototransistor then switches on allowing current to flow between the emitter and collector terminals of the optoisolator.

The optoisolator is electrically isolated, which prevents direct current flow between the input and output circuits. This keeps the circuits from affecting each other, while still allowing signals to pass between them. Additionally, the optoisolator has the ability to isolate the input signal from the output signal, which helps to maintain the integrity of data and eliminate interference.

The high-speed switching of the 6N138S (TB) optoisolator and its superior voltage isolation make it an ideal choice for applications that require maximum data integrity. It can be used in a variety of applications, and its wide voltage range and fast response time make it an attractive option.

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