www.lairdtech.com sip-bro-7-0208 ambient operating temperature range: -40c to + 125c low profle surface mount common mode chokes laird technologies monolithic common mode chokes are designed for power and data line emi fltering where high current, small size or high frequency performance is required. this family of compact ferrite parts provides emi suppression on conductors such as pc board traces and high speed input/output circuitry (including network and storage subsystems). features: ? monolithic ? compact ? high current carrying capability (up to 10 amps continuous) ? excellent high frequency performance ? very low dcr to minimize circuit resistance ? smaller, lighter and less susceptible to vibration than wire-wound chokes ? lead free ? stable impedance under load applications: ? filtering dc power on pc boards, especially in applications of greater than 3.0 amps ? filtering common mode emi on high speed data lines ? pcmcia products ? filtering for bellcore telecom applications ? filtering on usb power lines ? disk drives test specifcations: ? maximum current ratings are determined by testing to a maximum temperature rise of 40 o c with continuous operating current. ? board level components are rated up to a maximum of 75 volts ? part performance is shown with curves for common, open and normal mode impedances. common mode impedance is the impedance of emi noise conducted in the same direction along two conductors. open mode impedance is the impedance measured across a single leg of the common mode choke. normal mode impedance is the total impedance to the differential circuit (both out and back). see data curves on back 2 3 4 .88 [.074] 2.92 [.5] 6.27 [.247] 0.46 [.08] 6.53 [.257] 0.26 [.404] figure #1 cm3322 figure #2 cm1922 2 3 4 .9 [.075] 2.95 [.6] 6.35 [.250 ] 0.46 [.08 ] 2.72 [.07] 6.53 [.257] part number fig # a mm (inches) b mm (inches) c mm (inches) d mm (inches) impedance (z) ohms @ typical peak impedance ( w ) peak impedance frequency (mhz) dcr max (ohms) rated i max (continuous) ma nominal 100 mhz typical 500 mhz typical 1 ghz cm3322p400r-10 1 8.50 (0.335) 5.60 (0.220) 2.10 (0.083) 2.24 (0.088) 40 121 185 251 1931 0.030 4000 CM3322U610R-10 1 8.50 (0.335) 5.60 (0.220) 2.10 (0.083) 2.24 (0.088) 61 123 170 191 1581 0.015 7000 cm3322x630r-10 1 8.50 (0.335) 5.60 (0.220) 2.85 (0.112) 2.24 (0.088) 63 114 152 165 1459 0.008 10000 cm1922x330r-10 2 4.70 (0.185) 5.60 (0.220) 2.85 (0.112) 2.24 (0.088) 33 64 86 93 1783 0.003 10000 part numbering system example cm 3322 p 400 r -0 product series code part size code rated continuous current code impedance value code packaging code additional description recommended lead free soldering conditions natural cooling soldering pre-heating 60 seconds 100 seconds 5 - 10 seconds 60 seconds 250 [482] 130 [255] temperature (o c) [o f] equivalent circuit land patterns 1 2 4 3
2 www.lairdtech.com sip-bro-7-0208 common mode bead impedance cm3322p400r-10 impedance ( w ) 0 0 00 000 frequency (mhz) 50 200 00 250 50 400 300 450 350 normal open common 0000 cm1922x330r-10 impedance ( w ) 0 0 00 000 frequency (mhz) 80 40 00 20 80 normal open common 0000 60 40 20 60 CM3322U610R-10 impedance ( w ) 0 0 00 000 frequency (mhz) 50 200 00 250 50 300 350 normal open common 0000 cm3322x630r-10 impedance ( w ) 0 0 00 000 frequency (mhz) 50 200 00 250 50 300 normal open common 0000 cm1922x330r-10 impedance ( ? ) 0 20 30 40 50 00 0 00 000 frequency (mhz) cm3322p400r-10 impedance ( ? ) 0 00 000 frequency (mhz) z 0 3000 0 00 50 200 250 300 50 3000 r x l z r x l 60 70 80 90 CM3322U610R-10 impedance ( ? ) 0 00 000 frequency (mhz) 0 00 50 200 250 50 3000 z r x l cm3322x630r-10 impedance ( ? ) 0 00 000 frequency (mhz) 0 00 40 60 80 80 3000 z r x l 20 60 40 20
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