surface mount wideband rf transformers document 117-1 document 117e-1 revised 03/23/06 ? provides wide band pass performance in a small smt package. ? 1812 size ferrite body with a ceramic base. ? 50 v isolation, 1/4 watt rf input power 1:1 transformers part inductance 2 test frequency imp. ratio dcr max i dc isolation insertion bandwidth color number 1 (h) (mhz) pri : sec (ohms) (ma) (vrms) loss (db) (mhz) dot 1812wbt-1l_ 14 10 1 : 1 4.8 200 50 <1 0.340 C 22 yellow 1812wbt-2l_ 5.3 10 1 : 1 1.8 400 50 <1 0.800 C 60 green 1812wbt-3l_ 1.25 50 1 : 1 0.7 500 50 <1 4 C 200 white 1812wbt-4l_ 0.220 50 1 : 1 0.3 700 50 <1 11 C 480 orange 1812wbt-5l_ 0.090 50 1 : 1 0.15 700 50 <1.5 48 C 645 red 1.5:1 transformers part inductance (h) 2 test freq. imp. ratio dcr max ( ) i dc isolation insertion bandwidth color number1 pri sec (mhz) pri : sec pri sec (ma) (vrms) loss (db) (mhz) dot 1812wbt1.5-1l_ 5.0 3.3 10 1.5 : 1 1.05 0.87 400 50 <0.5 1.3 C 100 red 1812wbt1.5-2l_ 2.5 1.6 10 1.5 : 1 0.74 0.58 500 50 <0.5 2.75 C 135 orange 1812wbt1.5-3l_ 1.0 0.60 10 1.5 : 1 0.43 0.34 500 50 <0.75 7.2 C 200 yellow 1812wbt1.5-4l_ 0.144 0.090 10 1.5 : 1 0.18 0.14 700 50 <2.25 38 C 535 green 2:1 transformers part inductance (h) 2 test freq. imp. ratio dcr max ( ) i dc isolation insertion bandwidth color number 1 pri sec (mhz) pri : sec pri sec (ma) (vrms) loss (db) (mhz) dot 1812wbt2-1l_ 13.80 6.90 10 2 : 1 4.6 3.2 200 50 <1.5 0.800 C 23 brown 1812wbt2-2l_ 5.850 2.925 10 2 : 1 1.25 0.95 400 50 <1.5 2.2 C 65 red 1812wbt2-3l_ 2.60 1.30 10 2 : 1 0.52 0.42 600 50 <1.5 4 C 105 orange 1812wbt2-4l_ 0.910 0.455 50 2 : 1 0.27 0.23 700 50 <1.5 11 C 200 yellow 1. when ordering, please specify termination and packaging codes: 1812wbt1.5-4 lc termination: e = rohs compliant gold over nickel over moly-manganese 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 (600 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 (2200 parts per full reel). 2. inductance is per winding 3. electrical specifcations at 25c. measurements are referenced to 50 ohms. refer to doc 362 soldering surface mount components before soldering. core material ferrite terminations rohs compliant gold over nickel over moly-manganese. other terminations available at additional cost. weight 131 C 152 mg ambient temperature C40c to +85c with i rms current storage temperature component: C40c to +85c. tape and reel packaging: C40c to +80c resistance to soldering heat max three 40 second refows at +260c, parts cooled to room temperature between cycles moisture sensitivity level (msl) 1 (unlimited foor 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 600/7 reel; 2200/13 reel plastic tape: 12 mm wide, 0.3 mm thick, 8 mm pocket spacing, 3.7 mm pocket depth pcb washing tested with pure water or alcohol only. for other solvents, see doc787_pcb_washing.pdf. us uk t aiwan china singapore +1-847-639-6400 sales@coilcraft.com +44-1236-730595 sales@coilcraft-eur ope.com +886-2-2264 3646 sales@coilcraft.com.tw +86-21-6218 8074 sales@coilcraft.com.cn + 65-6484 8412 sales@coilcraft.com.sg ? coilcraft inc. 2013 this pr oduct may not be used in medical or high risk applications without prior coilcraft appr oval. specification subject to change without notice. please check web site for latest infor mation.
document 117-2 typical frequency attenuation 1:1 transformers typical frequency attenuation 1.5:1 transformers typical frequency attenuation 2:1 transformers 4 4 3 3 1 1 2 2 bottom vie w 0.070 1,78 0.100 0.003 2,54 0,008 0.178 0.003 4,52 0,08 0.150 3,81 max ref color dot ov er pin 1 0.135 3,43 max 0.195 4,95 max 0.048 1,22 0.015 0,38 0.115 2,92 0.018 0,46 0.020 0,51 0.057 1,45 recommended land p attern 0.015 0,38 ref 0.040 1,02 0.020 0,51 min 0.030 0.002 0,76 0,05 pa d detail pri sec 14 23 attenuation (db, re: 50 ohms) frequency (mhz) 0 1 2 3 4 5 6 7 8 0.1 11 0 100 1000 -1 -2 -4 -3 -5 attenuation (db, re: 50 ohms) 0 1 2 3 4 5 6 7 8 frequency (mhz) 0.1 11 0 100 1000 -1 -2 -4 -3 attenuation (db, re: 50 ohms) 0 1 2 3 4 5 6 7 8 frequency (mhz) 0.1 11 0 100 1000 -1 -2 -4 -3 measured on a network analyzer (re: 50 ohms) document 117-2 revised 03/23/06 dimensions are in inches mm us uk t aiwan china singapore +1-847-639-6400 sales@coilcraft.com +44-1236-730595 sales@coilcraft-eur ope.com +886-2-2264 3646 sales@coilcraft.com.tw +86-21-6218 8074 sales@coilcraft.com.cn + 65-6484 8412 sales@coilcraft.com.sg ? coilcraft inc. 2013 this pr oduct may not be used in medical or high risk applications without prior coilcraft appr oval. specification subject to change without notice. please check web site for latest infor mation.
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