MABA-011064 Step-Down Balun Transformer MACOM MABA-011064 is offered as a RoHS compliant, 4:1 step-down flux coupled Balun transformer. This 5-300MHz transformer provides excellent temperature stability and is 260º reflow compatible. The MACOM MABA-011064's high power and temperature performance make it ideally suited for CATV, broadband, FTTX, and DOCSIS 3.0x upstream applications.