Surface Mount Toroidal Inductor The inductor is fully encapsulated in epoxy resin and is housed in a Liquid Crystal Polymer case, off-white in color. The case dimensions are specified in Table 2. The case marking is applied by silkscreen using blue epoxy paint. The 4 Phosphor-Bronze or Beryllium Copper leads are tin-lead plated and the 2 active leads are marked on the case by the coil emblem. Product Selection Table PART L SIZE DCR Q SRF TYP. RATED IDC NUMBER (uH) (ohms) (nom) (Mhz) (mA) SMT-2.7 2.7 1 0.50 90 93 900 SMT-3.0 3.0 1 0.50 90 87 880 3.3 1 0.50 87 81 860 SMT-3.3 SMT-3.6 3.6 1 0.50 87 76 840 SMT-3.9 3.9 1 0.60 85 71 820 SMT-4.3 4.3 1 0.60 85 67 810 SMT-4.7 4.7 1 0.60 80 63 800 SMT-5.1 5.1 1 0.60 78 60 790 SMT-5.6 5.6 1 0.60 78 57 780 SMT-6.2 6.2 1 0.60 75 54 770 SMT-6.8 6.8 1 0.60 75 51 760 SMT-7.5 7.5 2 0.80 92 48 750 SMT-8.2 8.2 2 0.90 92 45 730 SMT-9.1 9.1 2 0.90 92 42 710 SMT-10 10.0 2 0.90 91 40 690 SMT-11 11.0 2 1.0 91 38 670 SMT-12 12.0 2 1.1 91 36 650 SMT-13 13.0 2 1.1 90 34 630 SMT-15 15.0 2 1.2 90 32 610 SMT-16 16.0 2 1.2 90 30 600 SMT-18 18.0 2 1.3 90 28 590 SMT-20 20.0 2 1.4 90 26 570 SMT-22 22.0 2 1.5 89 24 550 SMT-24 24.0 2 1.5 89 22 540 SMT-27 27.0 2 1.6 88 21 530 SMT-30 30.0 2 1.7 88 20 510 SMT-33 33.0 2 1.8 87 19 500 SMT-36 36.0 2 1.9 85 18 490 SMT-39 39.0 2 2.0 83 17 480 SMT-43 43.0 2 2.1 80 16 470 SMT-47 47.0 2 2.2 76 15 470 SMT-51 51.0 3 2.3 110 14 460 A .025 B .020 TYP. CL A .010 TYP. C L 1/2C DATE CODE C INDUCTANCE TEST (IN uH) FREQUENCY 2.7-9.1 7.9MHz 10-91 2.5MHz 100-910 790KHz 1000-1200 250KHz TABLE 1 Test Frequencies YYWW The standard inductance value tolerance is +/-5% when measured at the frequencies specified in Table 1. Inductance values are measured on an HP 4284A LCR meter. Since inductance varies with AC/DC current values, each end application should be evaluated to ensure proper readings. The tabulated current ratings (Rated IDC) are those calculated to cause a 25 deg. C rise in case temperature. These inductors are designed to meet the applicable portions of MIL-C-15305, Grade 1, Class B. The temperature coefficient of inductance is less than 400ppm/deg. C over the operating temperature range of -55 to +125 deg. C. Inductors are capable of withstanding 500Vdc@50 uA applied between the coil and the case. SMT620 MADE IN USA The Surface Mount Toroidal Inductors manufactured by Engineered Components Company are designed for RF/low power applications using stable powdered iron core material. The fully encapsulated inductor provides a low external magnetic field, a high selfresonant frequency, and a high Q. A=WIDTH & LENGTH B=HEIGHT C=LEAD SPACING SIZE 1 2 3 4 5 A B C .250 .200 .150 .300 .200 .200 .350 .275 .250 .400 .275 .300 .500 .275 .400 TABLE 2 Package Sizes Product Selection Table (cont.) PART L SIZE DCR Q SRF TYP. RATED IDC NUMBER (uH) (ohms) (nom) (Mhz) (mA) SMT-56 56.0 3 2.4 106 13 450 SMT-62 62.0 3 2.6 102 12 440 SMT-68 68.0 3 2.8 98 12 420 SMT-75 75.0 3 3.0 96 11 410 SMT-82 82.0 3 3.2 94 10 400 SMT-91 91.0 3 3.4 92 10 400 SMT-100 100 3 3.6 105 9 380 SMT-110 110 3 3.8 104 9 370 SMT-120 120 3 3.9 103 8 360 SMT-130 130 3 4.0 102 8 350 SMT-150 150 3 4.2 102 7 340 SMT-160 160 3 4.4 101 7 330 SMT-180 180 3 4.8 101 6 330 SMT-200 200 4 5.1 100 6 320 SMT-220 220 4 5.4 100 5 320 SMT-240 240 4 5.7 100 5 320 SMT-270 270 4 3.8 100 5 400 SMT-300 300 4 4.0 100 4 390 SMT-330 330 4 4.2 100 4 380 SMT-360 360 4 4.4 100 4 370 SMT-390 390 4 4.6 99 3 360 SMT-430 430 4 4.8 98 3 350 SMT-470 470 4 5.0 97 3 350 SMT-510 510 4 5.2 95 3 340 SMT-560 560 4 5.5 92 3 330 SMT-620 620 5 5.8 88 2.8 350 SMT-680 680 5 6.2 82 2.6 340 SMT-750 750 5 6.5 75 2.5 330 SMT-820 820 5 6.8 70 2.3 320 SMT-910 910 5 7.1 65 2.2 320 SMT-1000 1000 5 7.5 115 2.1 310 SMT-1200 1200 5 8.2 115 1.8 300 Special modules can often be manufactured to provide for customer specific applications. engineered components company A Division of Cornucopia Tool & Plastics, Inc. PO Box 1915, 448 Sherwood Rd., Paso Robles CA 93447 Phone: 805-369-0034 Fax: 805-369-0033 Web: www.ec2.com