Block vcm pcb mount single output transformers block vcm 16112 the block vcm pcb mount transformer 16va 12v 133ma is ideal for adjustment of the voltage and simple electrical isolation while also acting as a safety isolating transformer for the safe electrical isolation of the input and output sides suitable for creating selv and pelv circuits because of the limit on the output voltagedesigned with excellent size to power ratio with mounting tabs on side of housing this high quality tr