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The 0402CS-40N from Coilcraft is a RF Inductor with Inductance 0.04 to 0.04 uH, DC Resistance 0.44 Ohms, DC Current 0.32 mA, Self Resonant Frequency 2240 MHz. More details for 0402CS-40N can be seen below.
100, 120 and 160 nH Chip Inductors for NFC Circuits
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