Optocoupler as a switch, optocoupler high side switch, Phototransistor

 DIP4 Surface Mount Single Channel 70 V 5000 Vrms Phototransistor Optocoupler

https://www.futureelectronics.com/p/semiconductors--optoelectronics--isolation-components-optocouplers/fod817dsd-onsemi-3492428