march 3, 2010 datatronic : 28151 highway 74, romoland, ca 92585 tel: 951-928-7700 fax: 951-928-7701 email: ddisales@datatronics.com 499 king?s road, hong kong tel: (852) 2562 3858, (852) 2564 8477 fax: (852) 2565 7214, (852) 25 63 1290 all specifications are subj ect to change without notice. schematic 8 7 1 3 7 8 1 2 3 4 5 6 .024 0,61 .010 0,25 .320 max 8,13 .161 max 4,10 .236 max 6,00 .073 1,85 .073 1,85 .050 1,27 .060 1,52 .120 3,05 .100 2,54 .106 2,69 .050 1,52 suggested pad layout ct321-xxx smd current sense transformer ct321 series features ? low profile ? height: 4.1mm max. ? primary rated for 10 amps rms max. (note 8) ? operating frequency range: 10khz to 1mhz ? temperature range ?40c to +130c ? electrical specifications @ 25c ? tinned leads with leaded solder is available (note 6) datatronics part number turns ratio ( ? 2%) inductance (1-3) ? h (typ) dcr (1-3) ? (max) hipot vrms CT321-020 1:20 100 0.50 500 ct321-030 1:30 230 0.75 500 ct321-040 1:40 440 1.03 500 ct321-050 1:50 670 1.61 500 ct321-060 1:60 1000 1.98 500 ct321-070 1:70 1300 2.97 500 ct321-100 1:100 2800 5.36 500 ct321-125 1:125 4400 6.67 500 ct321-200 1:200 12200 33.24 500 mechanical outline: notes: 1.) all dimensions are in inches/mm tolerance: ? 0.010/0,25 unless otherwise specified 2.) inductance tested at 10 khz, 0.1vrms 3.) coplanarity: 0.004/0,102 4.) tape and reel quantity, 1200 pcs/reel 5.) terminating resistor (r t ) calculated: r t = (n turns / i pri ) * v ref 6.) for non-rohs parts, replace ct prefix with -42 e.g. ct321 becomes 42-321 7.) terminal finish compliant to rohs requirements. solder in accordance with j-std-020d 8.) primary dcr (~4m ? ) may cause higher voltage than typical for current sensing at high current and higher turns ratios.
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