This part is a kind of semiconductor called 14HY8002.

Function of this product has Hybrid Stepper Motors.

Manufacturers : ETC

Image and pinout :

Some of the text within the PDF file :

HYBRID STEPPING MOTORS 0.9˚ 2-PHASE 1.8˚ 3.6˚ 14HY SERIES 1.8° Key Features I Low Inertia I Small Size I High Acceleration General Specifications Bi-polar Model Number 14HY5010 14HY8002 Resistance Inductance Rated per Phase per Phase Current ohm mH A 9 8 0.4 5.5 5 0.85 Holding Torque mNm oz-in 60 8.50 100 14.16 Detent Torque mNm oz-in 10 1.42 15 2.12 Rotor Inertia g.cm2 oz-in2 12 0.07 20 0.11 Uni-polar Model Number 14HY5011 14HY8001 Resistance Inductance Rated per Phase per Phase Current ohm mH A 9 4.2 0.4 2.7 1.4 1.2 Holding Torque mNm oz-in 45 6.37 80 11.33 Motor Wiring Diagram > Page A-8 Mechanical Dimension Detent Torque mNm oz-in 10 1.42 15 2.12 Rotor Inertia g.cm2 oz-in2 12 0.07 20 0.11 Model Number 14HY5** 14HY8** L mm (in.) 26 (1.01) 37 (1.44) Mass kg [ ... ]

14HY8002 PDF Datasheet Download