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The Bourns 7118-RC is a through-hole common mode choke from the J.W. Miller 7100 series, designed for EMI suppression in power circuits. It features a ferrite core and radial termination style for PCB mounting. The component provides an inductance of 1.7 mH at a test frequency of 1 kHz with a tolerance of 15%. It supports a maximum DC current of 5 A and has a maximum DC resistance of 40 mOhms. The device operates within a temperature range of -55°C to +105°C and measures 30.48 mm in length, 11.43 mm in width, and 20.32 mm in height.
Verify the specific manufacturer part number against official Bourns documentation to ensure compatibility with design requirements. Confirm that the radial lead configuration matches the target PCB footprint. Check for RoHS compliance status if restricted substances are prohibited in the final assembly. Ensure the operating temperature range meets the environmental conditions of the intended application site.
Select this component when a high-current common mode choke with radial leads is required for power line filtering. The 1.7 mH inductance value is suitable for standard mains frequency noise suppression. Consider the physical dimensions and lead spacing to ensure adequate clearance on the circuit board. Verify that the 5 A current rating exceeds the maximum expected load current including surge conditions.
This component belongs to the Bourns J.W. Miller 7100 series of common mode chokes. The series offers various inductance values and current ratings for different power applications. The 7118-RC variant specifically targets higher current requirements compared to lower-rated siblings in the same family. It utilizes a standard unshielded design typical for general-purpose EMI suppression tasks.
Consult official Bourns substitution guides for verified alternatives. Cross-reference inductance, current rating, and physical dimensions before substituting.