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 2011.11.2 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 blm21a series (0805 size) c dimensions 2.00.2 0.50.2 1.250.2 eia code : 0805 0.850.2 (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 blm21ag121sn1 p 120ohm 25% - 800ma 0.10ohm max. -55 to +125c blm21ag151sn1 p 150ohm 25% - 800ma 0.10ohm max. -55 to +125c blm21ag221sn1 p 220ohm 25% - 800ma 0.13ohm max. -55 to +125c blm21ag331sn1 p 330ohm 25% - 700ma 0.16ohm max. -55 to +125c blm21ag471sn1 p 470ohm 25% - 700ma 0.19ohm max. -55 to +125c blm21ag601sn1 p 600ohm 25% - 600ma 0.21ohm max. -55 to +125c blm21ag102sn1 p 1000ohm 25% - 500ma 0.28ohm max. -55 to +125c number of circuits: 1 c impedance-frequency characteristics (main items) impedance ( ) frequency (mhz) 1 10 100 1000 3000 1200 900 600 300 0 blm21ag331sn1 blm21ag221sn1 blm21ag601sn1 blm21ag471sn1 blm21ag121sn1 blm21ag102sn1 blm21ag151sn1 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 2011.11.2 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 blm21ag121sn1 1 10 100 1000 3000 frequency (mhz) impedance ( ) 200 150 100 50 0 r x z c impedance-frequency characteristics blm21ag151sn1 1 10 100 1000 3000 frequency (mhz) impedance ( ) 200 150 100 50 0 r x z c impedance-frequency characteristics blm21ag221sn1 1 10 100 1000 3000 frequency (mhz) impedance ( ) 300 60 120 180 240 0 r x z c impedance-frequency characteristics blm21ag331sn1 1 10 100 1000 3000 frequency (mhz) impedance ( ) 400 300 200 100 0 r x z c impedance-frequency characteristics blm21ag471sn1 1 10 100 1000 3000 frequency (mhz) impedance ( ) 600 450 300 150 0 x r z c impedance-frequency characteristics blm21ag601sn1 1 10 100 1000 3000 frequency (mhz) impedance ( ) 800 600 400 200 0 x r z 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 2011.11.2 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 blm21ag102sn1 1 10 100 1000 3000 frequency (mhz) impedance ( ) 1200 900 600 300 0 x r z 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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