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 blm21p 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 blm21pg220sn1 p 22ohm 25% - 6000ma 0.009ohm max. -55 to +125c blm21pg300sn1 p 30ohm (typ.) - 4000ma 0.014ohm max. -55 to +125c blm21pg600sn1 p 60ohm 25% - 3500ma 0.02ohm max. -55 to +125c blm21pg121sn1 p 120ohm 25% - 3000ma 0.03ohm max. -55 to +125c BLM21PG221SN1 p 220ohm 25% - 2000ma 0.045ohm max. -55 to +125c blm21pg331sn1 p 330ohm 25% - 1500ma 0.07ohm 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 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 derating of rated current in operating temperature exceeding +85c, derating of current is necessary for blm21pg 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 2000 3000 1500 6000 4000 3500 c impedance-frequency characteristics (main items) impedance ( ) frequency (mhz) 1 10 100 1000 3000 500 400 300 100 200 0 blm21pg220sn1 blm21pg300sn1 blm21pg600sn1 BLM21PG221SN1 blm21pg331sn1 blm21pg121sn1 c impedance-frequency characteristics blm21pg220sn1 1 10 100 1000 3000 frequency (mhz) impedance ( ) 30 20 10 0 z r x 40 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 blm21pg300sn1 1 10 100 1000 3000 frequency (mhz) impedance ( ) 10 20 30 40 0 z r x 50 c impedance-frequency characteristics blm21pg600sn1 1 10 100 1000 3000 frequency (mhz) impedance ( ) 20 40 60 80 0 z r x 100 c impedance-frequency characteristics blm21pg121sn1 1 10 100 1000 3000 frequency (mhz) impedance ( ) 0 40 80 160 120 z r x c impedance-frequency characteristics BLM21PG221SN1 1 10 100 1000 3000 frequency (mhz) impedance ( ) 60 120 180 240 0 z r x 300 c impedance-frequency characteristics blm21pg331sn1 1 10 100 1000 3000 frequency (mhz) impedance ( ) 500 100 200 300 400 0 r x z 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 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 ! 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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