VO4258D

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Optoisolators are electronic components that isolate electrical circuits from one another to provide a robust security mechanism. The concept of optical isolation was first introduced to build interfaces between microprocessors and other devices, such as modems. The isolators are widely used in electrical and electronic control systems where they provide protection from electrical surges as well as maintaining the required performance. The VO4258D is a type of optoisolator that has been designed for use in industrial and commercial applications. It is a Triac, SCR Output type isolator which is perfect for applications that require reliable and fast switching action.

The VO4258D is a 4-pin package available with in-line terminals or surface mount. It features a 4N slope resistor with operating currents from 2.5mA to 18mA. It comes with adjustable peak life current for both the anode and cathode and supports a maximum of 250Vac or 300Vdc. The isolator has a high response speed and is designed to switch rapidly up to 5kHz. It also has a low minimum on/off times of 1.5µs and maximum off/on times of 5µs.

The working principle of the VO4258D is based on the principle of optical isolation. The isolator consists of an infrared LED and a photo-sensitive triac. Whenever a voltage from the input circuit is applied across the LED, the LED emits light, which then activates the triac. The triac then conducts the electrical current flowing through the output circuit and the cycle continues until the voltage is removed from the LED. The isolator also includes a Zener diode connected to the triac, which avoids electrical sparks due to over-voltage.

The VO4258D optoisolator is mainly used in applications involving high voltages and currents, such as controlling relays, contactor boards and motor starters. It can also be used to control heaters, motors, fans, solenoid valves, as well as other electronic components. The isolator can also be incorporated into alarms, timers and other electromechanical protection systems.

Due to its fast switching ability, the VO4258D optoisolator is preferred by industrial and commercial users to ensure their electrical systems are isolated securely from each other. Additionally, the isolator has an adjustable peak life current that allows users to have better control over their applications. With its high response speed and low minimum on/off times, the VO4258D is a reliable and robust optoisolator that is suitable for a wide variety of applications.

The specific data is subject to PDF, and the above content is for reference