This part is a kind of semiconductor called 86BYGH450C-02.

Function of this product has HYBRID STEPPING MOTOR.

Manufacturers : ETC

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SERIES OF HYBRID STEPPING MOTOR 混合式步进电机 四相高转矩低振动方形 86BYGH450 系列 基本参数(General Specifications)： 步距角（Step Angle）--- 1.8°/0.9°(full step/ half step) 步距角精度(Step Angle Accuracy)±5%(full step, no load) 电阻精度（Resistance Accuracy）--±10% 电感精度(Inductance Accuracy) --±20% 温升(Temperature Rise)-80℃ Max(rated current, 2 phases on) 环境温度(Ambient Temperature Range)--- -20℃∽+50℃ 绝缘电阻(Insulation Resistance)- 100MΩ [ ... ]

86BYGH450C-02 PDF Datasheet Download