PS2581L2-W-A

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Optoisolators, also known as opto-couplers, are semiconductor components that transfer a signal through an isolation barrier, like an insulation barrier. This isolation barrier separates two circuits and allows them to be electrically independent, while allowing the transfer of a signal between them. The PS2581L2-W-A is an optoisolator component specifically designed as a transistor, photovoltaic output. It is a small component mostly used in electronic engine management systems, special machines and various other safety systems.

The PS2581L2-W-A is a single channel, photovoltaic output optoisolator component. It consists of a combination of an AlGaAs infrared LED light source and an integrated phototransistor detector. It also incorporates a series resistor and two series diodes that are all integrated into one small surface-mount package. The resin encapsulation of the PS2581L2-W-A serves to keep the opto-coupler isolated from its environment while providing mechanical protection against vibration and shock.

The PS2581L2-W-A’s application field consists of safety functions, such as single fault monitoring, interlock circuits, and machine door control, as well as many digital and analog speed measurement systems. The most common applications of the PS2581L2-W-A are machines and special safety functions due to its vibration-proof performance and its electrical isolation capability. The PS2581L2-W-A is also commonly used as a transistor, photovoltaic output optoisolator, and its compact surface-mount package makes it easy to mount and install. Because of its thermally stable, highly reliable construction, the PS2581L2-W-A has seen significant use in many industries and can be found in automotive, industrial, home appliance, and medical applications, among others.

The working principle of the PS2581L2-W-A is relatively simple. An infrared LED light source is used to emit light which is directed to an integrated phototransistor detector. The phototransistor detector triggers and activates when it senses the light, and the current is then modulated to a signal form. The light source’s intensity is adjustable and the resistance of the LED light source can also be regulated through a PWM signal. The current that is modulated by the phototransistor is then passed through an internal series resistor to an output terminal. The PS2581L2-W-A is designed to provide a high electrical insulation barrier and high transfer efficiency between input and output terminals.

In conclusion, the PS2581L2-W-A is an optoisolator component designed as a transistor, photovoltaic output for various safety functions, digital speed measurement systems, and other applications. The PS2581L2-W-A’s resin encapsulation keeps it isolated from its environment and serves as a mechanical protection, while its combination of an infrared LED light source and an integrated phototransistor detector modulates voltage into a signal form. The current that is modulated by the phototransistor is passed through an internal series resistor to an output terminal, providing a high electrical insulation barrier and high transfer efficiency between input and output terminals.

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