This part is a kind of semiconductor called M55SP-1.
Function of this product has Stepping Motors.
Manufacturers : Mitsumi Electronics
Image and pinout :
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MITSUMI Stepping Motors M55SP-1 Stepping Motors OUTLINE A high-precision stepping motor "M55SP-1", 55mm in outer diameter. Despite such compact body size as 23mm in thickness, it has acquired high output characteristic, excellent running quietness and stability. FEATURES 1.High output torque. 2.Superior running quietness and stability. 3.Step angle : 7.5˚. 4.Excellent responsiveness acquired. www.DataSheet4U.com USES Printers, multifunction machines, copy machines, FAX, and such. MITSUMI Stepping Motors SPECIFICATIONS Items Rated Voltage Working Voltage Rated Current/Phase No. of Phase Coil DC Resistance Step Angle Excitation Method Insulation Class Holding Torque Pull-out Torque Pull-in Torque Max. Pull-out Pulse Rate Max. Pull-in Pulse Rate M55SP-1 DC 12V DC 24V DC 10.8~13.2V DC [ ... ]