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 inductors (coils) > chip inductor (chip coil) > power inductor (multilayer type for choke) 2011.9.8 o this data sheet is applied for chip inductors (chip coils) used for general electronics equipment for your design. chip inductor (chip coil) power inductor (multilayer type for choke) lqm21f_70 series (0805 size) c dimensions 2.00.2 0.50.3 1.250.2 1.250.2 (in mm) c packaging code packaging minimum quantity l 180mm embossed tape 3000 b bulk(bag) 1000 c rated value ( p : packaging code) part number inductance test frequency rated current dc resistance self resonance frequency (min.) lqm21fn4r7m70 p 4.7h 20% 1mhz 120ma 0.35ohm 30% 25mhz lqm21fn100m70 p 10h 20% 1mhz 100ma 0.60ohm 30% 15mhz class of magnetic shield: magnetic shield of ferrite operating temperature range (self-temperature rise is not included): -55 to +125c c impedance-frequency characteristics (typ.) 1 10 100 1000 1 10 100 1000 10000 frequency (mhz) impedance ( ) 10h 4.7h c inductance-current characteristics (typ.) inductance (h) current (ma) 0.1 1 10 100 1 100 10 1000 10h 4.7h c ! caution/notice ! caution (rating) do not use products beyond the rated current as this may create excessive heat. 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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