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 before 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 > for automotive > chip ferrite bead for automotive 2012.9.6 o this data sheet is applied for chip ferrite bead used for automotive electronics equipment for your design. for automotive chip ferrite bead for automotive blm31p series (1206 size) c dimensions 1.10.2 3.20.2 1.60.2 0.70.3 (in mm) : electrode c equivalent circuit (resistance element becomes dominant at high frequencies.) c packaging code packaging minimum quantity l 180mm embossed tape 3000 k 330mm embossed 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 blm31pg330sh1 p 33ohm 25% - 6000ma 0.009ohm max. -55 to +125c blm31pg500sh1 p 50ohm (typ.) - 3500ma 0.015ohm max. -55 to +125c blm31pg121sh1 p 120ohm 25% - 3500ma 0.02ohm max. -55 to +125c blm31pg391sh1 p 390ohm 25% - 2000ma 0.05ohm max. -55 to +125c blm31pg601sh1 p 600ohm 25% - 1500ma 0.08ohm 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 before 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 > for automotive > chip ferrite bead for automotive 2012.9.6 o this data sheet is applied for chip ferrite bead used for automotive 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 blm31pg 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 1500 6000 3500 c impedance-frequency characteristics (main items) 0 200 400 600 800 impedance ( ) 1 10 100 3000 1000 frequency (mhz) blm31pg391sh1 blm31pg500sh1 blm31pg330sh1 blm31pg121sh1 blm31pg601sh1 c impedance-frequency characteristics blm31pg330sh1 1 10 100 1000 3000 frequency (mhz) impedance ( ) 10 20 30 40 0 z r x 50 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 before 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 > for automotive > chip ferrite bead for automotive 2012.9.6 o this data sheet is applied for chip ferrite bead used for automotive electronics equipment for your design. continued from the preceding page. c impedance-frequency characteristics blm31pg500sh1 1 10 100 1000 3000 frequency (mhz) impedance ( ) 60 40 20 0 z r x 80 c impedance-frequency characteristics blm31pg121sh1 1 10 100 1000 3000 frequency (mhz) impedance ( ) 40 80 120 160 0 z r x 200 c impedance-frequency characteristics blm31pg391sh1 1 10 100 1000 3000 frequency (mhz) impedance ( ) 500 100 200 300 400 0 r x z c impedance-frequency characteristics blm31pg601sh1 1 10 100 1000 3000 frequency (mhz) impedance ( ) 800 600 400 200 0 r x z c ! caution/notice ! caution (rating) 1. do not use products beyond the rated current as this may create excessive heat and deteriorate the insulation resistance. 2. be sure to provide an appropriate fail-safe function on your product to prevent a second damage that may be caused by the abnormal function or the failure our product. 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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