Galvanic barrier with 5000Vrms and a 2:1 CTR spread
The FOD2711ASD is a single-channel optoisolator from onsemi that couples a DC input LED to a phototransistor output across a 5000Vrms isolation barrier. The current transfer ratio spans 100% to 200% at a 10 mA forward current — a 2:1 min-to-max spread that forces the designer to bias the LED for the worst-case CTR to guarantee the output saturates into the load. The transistor output is rated for 30 V and 50 mA continuous, with a maximum Vce(sat) of 400 mV.
Industrial temperature grade and surface-mount footprint
The 8-SMD gull-wing package suits standard reflow soldering and allows visual inspection of the solder joints. The input is DC only; no AC line coupling without an external bridge.
Active production — no lifecycle risk for the BOM
Listed as Active by onsemi, the FOD2711ASD carries no end-of-life notice.