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The 1812WBT1.5-4L from Coilcraft is a Balun with Frequency 38 to 535 MHz, Impedance Ratio (Num) 1:0.67, Current 700 mA. More details for 1812WBT1.5-4L can be seen below.
1:1 Transmission Line Transformer from 45 to 1200 MHz
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