9CR0412S50140X56MM12VDCTACH¥2490去看看光骏科技半导体企业一店发布了9CR0412S501《FAN 40X56MM 12VDC TACH》直流9CR0412S501风扇40X56MM¥3290去看看天熠半导体发布了无刷直流风扇9CR0412S501【FAN AXIAL DUAL 40X56MM 12VDC】