1 data sheet ! note: 1. this datasheet is downloaded from the website of murata manufacturing co., ltd. therefore, it?s speci? cations are subject to change or our products in it may be discontinued without advance notice. please check with our sales representatives or product engineers bef ore ordering. 2. this datasheet has only typical speci? cations because there is no space for detailed speci? cations. therefore, please approve our product speci? cations or transact the approval sheet for product speci? cations before ordering. http://www.murata.com/ 1 noise suppression products/emi suppression filters > emifil r (inductor type) > chip ferrite bead 2012.1.10 o this data sheet is applied for chip ferrite bead used for general electronics equipment for your design. emifil r (inductor type) chip ferrite bead blm18p series (0603 size) c dimensions 0.40.2 1.60.15 0.80.15 0.80.15 (in mm) : electrode c equivalent circuit (resistance element becomes dominant at high frequencies.) c packaging code packaging minimum quantity d 180mm paper tape 4000 j 330mm paper tape 10000 b bulk(bag) 1000 c rated value ( p : packaging code) part number impedance (at 100mhz/20c) impedance (at 1ghz/20c) rated current dc resistance operating temperature range blm18pg300sn1 p 30ohm (typ.) - 1000ma 0.05ohm max. -55 to +125c blm18pg330sn1 p 33ohm 25% - 3000ma 0.025ohm max. -55 to +125c blm18pg600sn1 p 60ohm (typ.) - 500ma 0.10ohm max. -55 to +125c blm18pg121sn1 p 120ohm 25% - 2000ma 0.05ohm max. -55 to +125c blm18pg181sn1 p 180ohm 25% - 1500ma 0.09ohm max. -55 to +125c blm18pg221sn1 p 220ohm 25% - 1400ma 0.10ohm max. -55 to +125c blm18pg331sn1 p 330ohm 25% - 1200ma 0.15ohm max. -55 to +125c blm18pg471sn1 p 470ohm 25% - 1000ma 0.20ohm max. -55 to +125c number of circuits: 1 continued on the following page.
2 data sheet ! note: 1. this datasheet is downloaded from the website of murata manufacturing co., ltd. therefore, it?s speci? cations are subject to change or our products in it may be discontinued without advance notice. please check with our sales representatives or product engineers bef ore ordering. 2. this datasheet has only typical speci? cations because there is no space for detailed speci? cations. therefore, please approve our product speci? cations or transact the approval sheet for product speci? cations before ordering. http://www.murata.com/ 2 noise suppression products/emi suppression filters > emifil r (inductor type) > chip ferrite bead 2012.1.10 o this data sheet is applied for chip ferrite bead used for general electronics equipment for your design. continued from the preceding page. c derating of rated current in operating temperature exceeding +85c, derating of current is necessary for blm18pg series. please apply the derating curve shown in chart according to the operating temperature. derating of rated current operating temperature (c) rated current (ma) 85 0 125 0 1000 500 1200 1400 2000 3000 1500 c impedance-frequency characteristics (main items) impedance ( ) frequency (mhz) 1 10 100 1000 3000 600 450 300 150 0 blm18pg471sn1 blm18pg331sn1 blm18pg221sn1 blm18pg181sn1 blm18pg121sn1 blm18pg600sn1 blm18pg330sn1 blm18pg300sn1 c impedance-frequency characteristics blm18pg300sn1 1 10 100 1000 3000 frequency (mhz) impedance ( ) 0 0 10 20 30 40 z r x c impedance-frequency characteristics blm18pg330sn1 1 10 100 1000 3000 frequency (mhz) impedance ( ) z r x 0 10 20 30 40 50 c impedance-frequency characteristics blm18pg600sn1 1 10 100 1000 3000 frequency (mhz) impedance ( ) z r x 0 25 50 75 100 continued on the following page.
3 data sheet ! note: 1. this datasheet is downloaded from the website of murata manufacturing co., ltd. therefore, it?s speci? cations are subject to change or our products in it may be discontinued without advance notice. please check with our sales representatives or product engineers bef ore ordering. 2. this datasheet has only typical speci? cations because there is no space for detailed speci? cations. therefore, please approve our product speci? cations or transact the approval sheet for product speci? cations before ordering. http://www.murata.com/ 3 noise suppression products/emi suppression filters > emifil r (inductor type) > chip ferrite bead 2012.1.10 o this data sheet is applied for chip ferrite bead used for general electronics equipment for your design. continued from the preceding page. c impedance-frequency characteristics blm18pg121sn1 1 10 100 1000 3000 frequency (mhz) impedance ( ) 200 150 100 50 0 z r x c impedance-frequency characteristics blm18pg181sn1 1 10 100 1000 3000 frequency (mhz) impedance ( ) z r x 0 100 200 300 c impedance-frequency characteristics blm18pg221sn1 1 10 100 1000 3000 frequency (mhz) impedance ( ) r x 0 100 200 300 z c impedance-frequency characteristics blm18pg331sn1 1 10 100 1000 3000 frequency (mhz) impedance ( ) x 0 150 300 450 z r c impedance-frequency characteristics blm18pg471sn1 1 10 100 1000 3000 frequency (mhz) impedance ( ) x 0 150 300 450 600 z r continued on the following page.
4 data sheet ! note: 1. this datasheet is downloaded from the website of murata manufacturing co., ltd. therefore, it?s speci? cations are subject to change or our products in it may be discontinued without advance notice. please check with our sales representatives or product engineers bef ore ordering. 2. this datasheet has only typical speci? cations because there is no space for detailed speci? cations. therefore, please approve our product speci? cations or transact the approval sheet for product speci? cations before ordering. http://www.murata.com/ 4 noise suppression products/emi suppression filters > emifil r (inductor type) > chip ferrite bead 2012.1.10 o this data sheet is applied for chip ferrite bead used for general electronics equipment for your design. continued from the preceding page. c ! caution/notice ! caution (rating) do not use products beyond the rated current as this may create excessive heat and deteriorate the insulation resistance. notice solderability of tin plating termination chip might be deteriorated when low temperature soldering pro le where peak solder temperature is below the tin melting point is used. please con rm the solderability of tin plating termination chip before use.
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