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The 1812WBT2-1L from Coilcraft is a Balun with Frequency 0.8 to 23 MHz, Impedance Ratio (Num) 1:0.5, Current 200 mA. More details for 1812WBT2-1L can be seen below.
1:1 Transmission Line Transformer from 45 to 1200 MHz
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