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The 1812WBT2-2L from Coilcraft is a Balun with Frequency 2.2 to 65 MHz, Impedance Ratio (Num) 1:0.5, Current 400 mA. More details for 1812WBT2-2L can be seen below.
1:1 Transmission Line Transformer from 45 to 1200 MHz
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