Snappy opto constant voltage led drivers sph250 series snappy psu sph250 12a the snappy optoelectronics psu sph250 12a is a constant voltage led driver from the sph series this led driver is ip65 rated with a power rating of 250w it complies to international safety and emission standards the led driver features inbuilt openshort circuit protection overload and overheat protection snappy psu sph250 12a power supply 12vdc 18a 250w cv ip65