PS2501L-1-F3-A

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The PS2501L-1-F3-A is an optoisolator, specifically part of the Transistor, Photovoltaic Output family. These optoisolators are designed to be mounted on a printed circuit board in order to transfer an electrical or optical signal with electrostatic protection. The device consists of a two-dimensional optically activated other side contact and a remote side contact, separated by an isolation gap between the input and output terminals.

The PS2501L-1-F3-A consists of a photo-sensitive element which is composed of a monolithic silicon chip, a NPN silicon phototransistor, and a field-effect transistor (FET). The phototransistor amplifies the weak current generated by the photo-sensitive element, while the FET helps enhance the amplifier gain. The PS2501L-1-F3-A provides an output of 1.8V maximum and 3mA maximum.

The PS2501L-1-F3-A has an exceptionally wide response range: from 300nm to 1100nm. Additionally, the FET acts as a low-pass filter, which allows the PS2501L-1-F3-A to reject any high-frequency signals so that it is immune to noise. The device also features a high isolation voltage, more than 5,000 VAC. The high isolation voltage prevents any noise from interfering with the signal.

The PS2501L-1-F3-A is most commonly used in the field of Touch Sensing, such as pical/light sensors or applications which require electrostatic isolation, as well as low-power signal relays and high-voltage or high-surge signal transfer. Additionally, it can be used as a TTL interface in high-speed logic circuits and for LED illumination systems. Furthermore, its use is not limited to consumer electronics; it also has a wide array of industrial applications.

The PS2501L-1-F3-A has a working principle that combines optical and electrical signals. The photo sensitive element of the optoisolator converts an optical signal into a weak electrical signal, which travels across the isolation gap between the input and output terminals. On the output side, the phototransistor amplifies the current into a higher voltage signal, which can then be used to power the circuit.

The PS2501L-1-F3-A has a variety of advantages, such as low cost, small size, and high reliability. Additionally, it has a very low operating current (mechanical): max. 10 mA, and the range is adjustable between 25mA and 6A. The FET\'s high amplification factor makes the output signal larger and more easily measurable, and its low-pass filters reduce interference.

In conclusion, the PS2501L-1-F3-A is an optoisolator that specializes in transferring electrical or optical signals with electrostatic protection, used in a variety of sensing, digital logic, and industrial applications. Its working principle intakes a weak signal and amplifies it with a phototransistor, while its FET and low-pass filter both enhance the signal\'s quality and reject any noise. The device offers a wide response range, high isolation voltage, adjustable current range, and a wide variety of advantages.

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