? coilcraft, inc. 2011 specifications subject to change without notice. please check our website for latest information. midi spring ? air core inductors document 184-1 document 184-1 revised 01/11/11 inductance 2 percent q 2 q 2 test freq. srf min 4 dcr max 5 i rms 6 part number 1 (nh) tolerance 3 typ min (mhz) (ghz) (mohm) (a) 1812sms-22n_l_ 22 5,2 135 100 150 3.2 4.2 3.0 1812sms-27n_l_ 27 5,2 135 100 150 2.7 4.0 3.5 1812sms-33n_l_ 33 5,2 130 100 150 2.5 4.8 3.0 1812sms-39n_l_ 39 5,2 135 100 150 2.1 4.4 3.0 1812sms-47n_l_ 47 5,2 135 100 150 2.1 5.6 3.0 1812sms-56n_l_ 56 5,2 125 100 150 1.5 6.2 3.0 1812sms-68n_l_ 68 5,2 120 100 150 1.5 8.2 2.5 1812sms-82n_l_ 82 5,2 120 100 150 1.3 9.4 2.5 1812sms-r10_l_ 100 5,2 115 100 150 1.2 12.3 1.7 1812sms-r12_l_ 120 5,2 125 100 150 1.1 17.3 1.5 1812sms-r15_l_ 150 5,2 145 100 150 0.75 33.0 1.2 1. when ordering, specify tolerance , termination and packaging codes: 1812sms-r12 glc tolerance: g =2% j = 5% termination: l = rohs compliant tin-silver (96.5/3.5) over copper. special order: t = rohs tin-silver-copper (95.5/4/0.5) or s = non-rohs tin-lead (63/37). packaging: c =7 machine-ready reel. eia-481 embossed plastic tape, 500 parts per full reel. b = less than full reel. in tape, but not machine-ready. to have a leader and trailer added ($25 charge), use code letter c instead. d =13 machine-ready reel. eia-481 embossed plastic tape. factory order only, not stocked, 2000 parts per full reel. 2. inductance and q tested at 150 mhz on an agilent/hp 4291a with a 16193 fixture and correlation. 3. tolerances in bold are stocked for immediate shipment. 4. srf tested on the agilent/hp 8753d and a coilcraft ccf1248 test fixture. 5. dcr tested on the cambridge technology model 510 micro-ohmmeter. 6. current that causes a 15c temperature rise from 25c ambient. 7. electrical specifications at 25c. refer to doc 362 ?soldering surface mount components? before soldering. for part marking data see www.coilcraft.com/colrcode.cfm. weight 0.10 ? 0.16 g terminations rohs compliant tin-silver over copper. other terminations available at additional cost. ambient temperature ?40c to +125c with i rms current, +125c to +140c with derated current storage temperature component: ?40c to +140c. packaging: ?40c to +80c resistance to soldering heat max three 40 second reflows at +260c, parts cooled to room temperature between cycles temperature coefficient of inductance (tcl) +5 to +70 ppm/c moisture sensitivity level (msl) 1 (unlimited floor life at <30c / 85% relative humidity) failures in time (fit) / mean time between failures (mtbf) one per billion hours / one billion hours, calculated per telcordia sr-332 packaging 500/7 reel; 2000/13 reel plastic tape: 12 mm wide, 0.3 mm thick, 8 mm pocket spacing, 4.2 mm pocket depth pcb washing only pure water or alcohol recommended ? air core inductors feature high q and current handling ? acrylic top provides a flat surface for pick and place ? solder coated leads ensure reliable soldering
? coilcraft, inc. 2011 specifications subject to change without notice. please check our website for latest information. document 184-2 document 184-2 revised 01/11/11 midi spring ? air core inductors typical l vs frequency typical q vs frequency 0 1 10 frequency (mhz) inductance (nh) 100 1000 10000 22 nh 39 nh 68 nh 120 nh 250 200 150 100 50 1 10 frequency (mhz) q factor 100 1000 10000 22 nh 39 nh 68 nh 120 nh 0 250 200 150 100 50 pick and place surface 135 max 0 min recommended land pattern strip length a b d c e f 0.103 2,62 0.203 5,16 0.058 1,48 0.170 4,32 0.195 0.250 0.165 0.170 0.015 0.030 a max b max c max d e f max 0.140 0.010 4,95 6,35 4,20 3,56 0,25 4,32 0,38 0,76 irms derating -40 -20 0 20 40 60 80 100 140 120 ambient temperature (c) 120 110 100 90 80 70 60 50 40 30 20 10 0 percent of rated rms i 25c dimensions are in inches mm designer?s kit c318 contains 12 each of all 5% values. designer?s kit c318-2 contains12 each of all 2% values.
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