This part is a kind of semiconductor called RF-370CA.

Function of this product has Motor.

Manufacturers : Mabuchi

Image and pinout :

Some of the text within the PDF file :

RF-370CA OUTPUT : 0.6W~2.0W (APPROX) MABUCHI MOTOR CO., LTD. Precious metal-brush motors WEIGHT : 51g (APPROX) Typical Applications Home Appliances : Blood Pressure Meter / Kitchen Appliance Audio and Visual Equipment VOLTAGE MODEL OPERATING RANGE NOMINAL NO LOAD SPEED r/min CURRENT A SPEED r/min AT MAXIMUM EFFICIENCY CURRENT A TORQUE mN·m g·cm OUTPUT W mN·m STALL TORQUE g·cm CURRENT A RF-370CA-15370 RF-370CA-12560 3~12 4~12 12V CONSTANT 12V CONSTANT 5600 3700 0.026 0.018 4840 3090 0.17 0.091 2.48 2.03 25.3 20.7 1.25 0.66 18.3 12.3 187 125 1.06 0.46 DIRECTION OF ROTATION 43.0 REF. 25° ␾ 1.2 HOLE 3.9 10.5 1.7 30.8 1.7 0.3 2° R E F. 2.0 RED MARK ␾ 24.4 MABUCHI MOTOR CO., LTD. (+) ␾ 6.45 ␾ 6.45 www.DataSheet.co.kr ␾ 2.0 (–) SHAFT LENGTH 42.0 [ ... ]

RF-370CA PDF Datasheet Download