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MURATA: 60% SMALLER DC POWER FILTERS!

2008-03-01  MURATA

MURATA recently introduced the BLM15P series of chip ferrites in size 0402 packages measuring a tiny 1.0mm x 0.5mm x 0.5mm! Despite their 60% reduction in length, the new chip ferrites versions offer the same high performance as the previous (size 0603) series.

The BLM15P series is well suited for reducing EMI on DC power lines and low-speed signal lines, especially in applications where board space is limited. The inductors feature low DC resistance – between 0.035 ohms and 0.090 ohms – and high rated current of up to 2.2A. The typical impedance at 100 MHz is between 10 Ohms and 120 Ohms, depending on the specific ferrite version. The equivalent circuit is an inductor in series with a resistor, with the resistance element becoming dominant at high frequencies.

The BLM15P series has an operating temperature range of -55°C to +125°C and current derating is required above +85°C. The components are offered on 180mm or 330mm paper tape reels, or packaged in bulk in minimum quantities of 1000.



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