4 4-43 model lc series lc and rc ?ters are offered by bi to solve issues of unwanted noise. each has cost/performance trade offs. lc composite construction has superior performance through the entire frequency range and has the sharpest roll off compared with rcs. new product model lc series low pass filter leadless surface mount chip inductor/capacitors ?integrated ladder ?ter ?small outline 0805 and 1206 sizes ?low pro?e suitable for pcmcia cards ?nickel barrier terminations ?monolithic construction ?steep insertion loss ?eliminates noise over a wide frequency range ?requires no chip orientation ?ideal for high frequency, space limited designs features and benefits ?emi/rfi ?tering ?on-board controllers and ethernet ?digital communications: facsimile machines, modems and isdn ?digital av equipment: television, video camrecorders and dvd ?lan, wan, universal serial bus cards and graphics card ?computers and peripherals applications speci?ations subject to change without notice. low pass filter technology thick ?m rc is the lowest cost and provides good performance. thin ?m rc offers good performance (under 1ghz), moderate cost and very good multi-element density.
4-44 model lc series typical performance - model lc 0805 lc 0805 l 103m lc 0805 l 223m lc 0805 l 473m lc 0805 l 104m lc 0805 l 224m 0 -10 -20 -30 -40 -50 -60 insertion loss [db] frequency [mhz] 0.1 1 10 100 1,000 10,000 cutoff frequency (code) temperature characteristics (tolerance) inductance at 1mhz (reference) magnetic loss at 1mhz (reference) capacitance at 1mhz (reference) dissipation factor at 1mhz (reference) dc resistance (reference) -25 c to +85 c +30%, -20% meets cutoff frequency 3.0 meets cutoff frequency 5.0% 6.0 ? 200nh 2.5 600pf 2.4% 3.0 ? 180nh 1.8 300pf 1.8% 1.8 ? 200nh 1.4 100pf 1.9% 1.8 ? 110nh 2.2 30pf 1.9% 1.5 ? 70nh 2.7 15pf 2.3% 1.2 ? 103 223 104 473 224
4 4-45 model lc series typical performance - model lc 1206 lc 1206 l 103m lc 1206 l 223m lc 1206 l 473m lc 1206 l 104m 0 -10 -20 -30 -40 -50 -60 insertion loss [db] frequency [mhz] 0.1 1 10 100 1,000 10,000 cutoff frequency (code) temperature characteristics (tolerance) inductance at 1mhz (reference) magnetic loss at 1mhz (reference) capacitance at 1mhz (reference) dissipation factor at 1mhz (reference) dc resistance (reference) -25 c to +85 c +30%, -20% meets cutoff frequency 3.0 meets cutoff frequency 5.0% 6.0 ? 330nh 1.1 760pf 3.0% 2.6 ? 550nh 0.6 200pf 1.7% 1.9 ? 220nh 1.0 100pf 2.0% 1.4 ? 150nh 1.5 20pf 2.3% 1.4 ? 103 223 104 473
4-46 model lc series low pass lters are most commonly used in high frequency circuits where the probability of noise is signi cant. the lc series, a ladder type low pass lter, is the most suitable for attenuating unwanted noise. the lc series is an integrated passive device with the equivalent of four inductors and three capacitors imbedded into a single 0805 or 1206 monolithic chip. the lc series integrated passive ladder construction filter design comparison and benefits cutoff rated part frequency rated current dcr number -3db (20%) voltage max. max. lc 0805 l 103m 10 mhz 25vdc 100ma dc 6 ohms lc 1206 l 103m 10 mhz 25vdc 100ma dc 6 ohms lc 0805 l 223m 22 mhz 25vdc 100ma dc 6 ohms lc 1206 l/h 223m 22 mhz 25vdc 100ma dc/1a dc 6 ohms/1 ohm lc 0805 l/h 473m 47 mhz 25vdc 100ma dc/1a dc 6 ohms/1 ohm lc 1206 l/h 473m 47 mhz 25vdc 100ma dc/1a dc 6 ohms/1 ohm lc 0805 l/h 104m 100 mhz 25vdc 100ma dc/1a dc 6 ohms/1 ohm lc 1206 l/h 104m 100 mhz 25vdc 100ma dc/1a dc 6 ohms/1 ohm lc 0805 l/h 224m 220 mhz 25vdc 100ma dc/1a dc 6 ohms/1 ohm electrical solderability jis c5102 8.4, 230 , 4 seconds, 90% coverage life 2 x rated voltage, ? c, ? l, 30%, 1,000 hours at 85 c temperature cycle jis c5102 9.3, -25 c to +85 c, 5 cycles, ? c, ? l, 20% moisture resistance +65 c, 90% r.h., 1,000 hours, ? c, ? l, 30% environmental is superior to discrete solutions at high frequencies due to very short internal interconnections. the lc series' ladder construction is superior to "t" styles by offering greater attenuation beyond the cutoff frequency. the lc series low pass lters offer steeper insertion loss and greater noise attenuation than other lters. the lc series provides signal attenuation below -20db above 1ghz.
4 4-47 model lc series outline dimensions (inch/mm) b a ferrite terminal electrode common ground c 0805 2012 1206 3216 .079 .008 2.0 0.20 .126 .008 3.2 0.20 .049 .008 1.25 0.20 .063 008 1.6 0.20 .031 .008 0.8 0.20 .039 008 1.0 0.20 .012 0.10 0.3 0.25 .016 012 0.4 0.30 a dim. size b dim. c dim. d dim. .024 0.12 0.6 0.30 .043 .012 1.1 0.30 e dim. .039 008 1.0 0.20 .063 .012 1.6 0.30 f dim. d e f recommended pcb layout (inch/mm) b d d e c a model lc 0805 lc 1206 a dim. .160 4.0 .110 2.8 b dim. .080 2.0 .070 1.8 c dim. .060 1.5 .036 .90 d dim. .036 .90 .025 .65 e dim. .014 .35 .012 .30 note: via recommended between ground plane and center pad.
4-48 model lc series lc 1206 l 223 m 7 model series size: 0805 1206 circuit: l = low current ladder h = high current ladder cutoff frequency code (khz): first two digits are significant. third digit denotes number of trailing zeros. packaging option: 7 = tape & 7" reel (standard) 0805: 4k/reel 1206: 2k/reel b = bulk (optional) 0805: 2k/bag 1206: 1k/bag cutoff frequency tolerance: (m = 20%) ordering information schematic y y y y yy y yy y v.v. gnd sg 50 ? 50 ?
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