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The 143-12J12 from Coilcraft is a RF Inductor with Inductance 0.545 uH, DC Resistance 0.0205 Ohms, DC Current 6.6 mA, Self Resonant Frequency 250 MHz. More details for 143-12J12 can be seen below.
Ferrite Chip Inductors for use in Mobile & Infrastructure Equipments
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