FOD4118T

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

The FOD4118T is a unique optoisolator designed specifically to drive a triac, SCR output. The device is used as a power interface between an electrical control system and a load, providing electrical isolation and driving power control components such as AC switches, discrete hobs, dimmers, small motors, relays, and other related devices.

The FOD4118T optoisolator consists of a gallium arsenide infrared LED optically coupled to a photo SCR. When current is passed through the LED a signal is sent to the photo SCR, triggering its conduction and firing the triac, SCR output. The optoisolator isolates the input and output making a power interface in electrical environments with high common mode voltage noise or high static potential differences.

The FOD4118T has a switching speed of 10 µs, a supply voltage range of 2–15.5 V, and a 3–5 V current transfer ratio of 800% (LED on). It has high immunity to noise, high-voltage transient spikes, and fast current transients. The input and output can be AC or DC, and the device has excellent temperature stability. The FOD4118T also has a choice of correct power dissipation, emitter current, and LED control current.

The working principle of the FOD4118T is based on the emission of photons from the LED, which is then detected by the SCR. When current passes through the LED, the number of photons released increases. This enables the optoisolator to generate a higher level of signals to the photo SCR and thus it triggers its conduction and fires the triac, SCR output. The FOD4118T typically uses between 4 and 10 mA of current and usually requires up to 15.5 V of power source.

The FOD4118T is a perfect solution for use in applications where electrical isolation and control of a triac, SCR output is desired. It offers a dependable, cost-effective interface between various control systems and other equipment. The optoisolator provides safety and convenience in applications such as controlling voltage, current, and wattage. Furthermore, with its high switch capability and reliable performance, the FOD4118T is an ideal choice for numerous electrical control systems.

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