Minimum operating voltage    8 V Maximum operating voltage    35 V Continuous current per phase    1 A Maximum current per phase    2 A Minimum logic voltage    3 V Maximum logic voltage    5.5 V Microstep resolution    full, 1/2, 1/4, 1/8 and 1/16 Reverse voltage protection?    No Dimensions    15.5 × 20.5 mm (0.6″ × 0.8″)