This part is a kind of semiconductor called 42BYGHW609.

Function of this product has Stepper Motor.

Manufacturers : ETC

Image and pinout :

Some of the text within the PDF file :

http://www.openimpulse.com 42BYGHW609 Stepper Motor Datasheet Model 42BYGHW609 Step Angle ( ° ) Motor Length L(mm) Rate Voltage (V) Rate Current (A) Phase Resistance ( Ω) Phase Inductance (mH) Holding Torque (g.cm) Lead Wire (NO.) Rotor Inertia (g. cm2) Detent Torque (g.cm) Motor Weight (kg) 1.8 40 3.4 1.7 2 3 4000 4 54 220 0.24 http://www.openimpulse.com http://www.openimpulse.com [ ... ]

42BYGHW609 PDF Datasheet Download