The WD3100B-6/TR is an electronic part manufactured by Will Semiconductor. It is a LED driver which features SC-70-6 (SOT-363) for RoHS compliance. It is configured in a 6-pin, miniature plastic surface mount package, and is capable of providing a constant LED current of up to 50mA. Its operating voltage is from 4V to 36V, making it suitable for use in both automotive and industrial applications. The WD3100B-6/TR also has a low quiescent current and low shutdown current, and features cycle-by-cycle over-current protection.