Specifications:Material: Mental + PlasticModel: Stepper Motor Driver TMC2208Microsteps: Up to 1/256MicroPlyer: 1/256Logic Voltage (VIO): 3-5VMotor Voltage (VM): 4.75-36VDrive Current: 1.4AMotor Phase Current: 1.2A RMS, 2.0A PeakPower: 5WItem Size: 20.3*14.9*11.5mm / 0.8*0.6*0.5inItem Weight: 45g/1.6ozPackage Weight: 50g/1.8oz Features:TMC2208 V1.2 Driver: TMC2208 is single-axis stepper motor drive chip,continuous drive current 1.4A,peak current 2A,voltage range 4.75V-36V,256 subdivision.Heat Sink: With heat sink effeciently work in heat dissipation,practicaly for prolong the service time of the driver.Easy to Use: Use the standard step / dir interface,can replace the original TMC2100 and reduce heat generation,especially for the 3D printing market.Major Features: UART configuration interface,CoolStep current dynamic adjustment technology,dcStep,stallGuard2 stall detection technology,can save 70% of the energy.Ultra-Quiet: TMC2208 is an ultra-quiet two-phase stepper motor driver chip,because the stealthChop2 ultra-quiet technology.