Inductors for power line filtering

16 September 2009 Passive Components

The new 1200RS and 1200LRS series of inductors from Murata Power Solutions are well suited for providing power line filtering in low- to medium-current applications such as switching power supply circuits. An integral ferrite shield makes them especially useful in designs that are susceptible to electromagnetic interference (EMI).

The through-hole, radial leaded devices have compact overall dimensions of 10,5 mm diameter x 8,5 mm height to support their inclusion in designs where PCB space is limited. The 1200LRS series is available with inductance values ranging from 6,8 μH to 22 mH and DC current ratings up to 4,7 A. The 1200RS series offers higher current versions with the same footprint; Inductance values extend from 10 μH to 1 mH and maximum current ratings to 4,6 A. All parts have a low DC resistance to help maximise efficiency.

Operating temperature range of the 1200RS and LRS series is -40°C to +85°C. The new devices use UL 94V-0 approved materials, are fully RoHS compliant, and have backward compatibility with Sn/Pb soldering systems.

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