SURFACE MOUNT EMI FILTERS CHIP FERRITE BEADS BLMR Series The BLMR Series ferrite beads are designed to minimize signal wave form distortion while exhibiting high impedance characteristics. FEATURES Low signal distortion High impedance characteristics Small size APPLICATIONS Digital Interface Circuits PART NUMBERING SYSTEM BLM CHIP FERRITE SERIES SIZE 11: 1.6 x 0.8mm 21: 2.0 x 1.25mm 11 R LOW DISTORTION R: Low Distortion Type 121 SK IMPEDANCE CODE at 100MHz 121: 120 ohms 471: 470 ohms PT CHARACTERISTICS PACKAGING CODE PB: Bulk PT: Tape 7" Reel PT1: Tape 13" Reel SPECIFICATIONS Dimensions: mm 0603 1.6 0.15 0.8 0.15 0.4 0.2 Part Number Impedance (Ohms) Typ. at 100MHz BLM11R121SK 120 BLM11R221SK 220 Rated Current (mA) DCR (Ohms max.) Operating Temperature Range 0.25 0.3 200 BLM11R471SK 470 0.5 BLM11R601SK 600 0.6 BLM11R102SK 1000 BLM21R121SK 0.8 0.15 0.8 -55C 120 0.15 +125C BLM21R221SK 220 0.2 BLM21R471SK 470 BLM21R601SK 600 0.3 BLM21R102SK 1000 0.5 100 ~ 0805 1.25 0.2 0.5 0.2 0.85 0.2 200 0.25 2.0 0.2 Available as standard through authorized Murata Electronics Distributors. 174 CG01-J SURFACE MOUNT EMI FILTERS CHIP FERRITE BEADS BLMR Series TYPICAL IMPEDANCE CHARACTERISTICS BLM11R121SK BLM11R221SK 150 100 50 0 1 10 100 300 200 100 0 1000 600 Impedance (Ohms) 400 Impedance (Ohms) Impedance (Ohms) 200 1 Frequency (MHz) 500 250 10 100 600 300 1 10 100 100 100 50 1 100 1000 1000 450 300 150 0 1000 10 BLM21R601SK Impedance (Ohms) Impedance (Ohms) 75 1000 Frequency (MHz) 600 150 100 150 0 1000 BLM21R471SK 225 10 200 Frequency (MHz) 300 10 1 BLM21R121SK 900 0 1000 BLM21R221SK 1 150 Frequency (MHz) Impedance (Ohms) Impedance (Ohms) Impedance (Ohms) 750 1 300 0 1000 1200 Frequency (MHz) Impedance (Ohms) 100 BLM11R102SK 1000 0 10 450 Frequency (MHz) BLM11R601SK 0 BLM11R471SK 1 Frequency (MHz) 10 100 1000 Frequency (MHz) 750 500 250 0 1 10 100 1000 Frequency (MHz) SURFACE MOUNT EMI FILTERS BLM21R102SK Impedance (Ohms) 1200 900 600 300 0 1 10 100 1000 Frequency (MHz) CG01-J 175