smd power choke: p/n 1812sdfc series rev. b jan. 10, 2012. page: 1 of 1 frontier electronics corp. ? 667 e. cochran street, simi valley, ca 93065 tel: (805) 522-9998 fax: (805) 522-9989 e-mail: frontiersales@frontierusa.com web: http://www.frontierusa.com smd square drum inductors? 1812sdf series a. electrical specifications: part no. mark l (uh) tolerance test freq. srf typ. (mhz) dcr ( ) max. idc max. (a) 1812sdf-1r0 ? -lfr 1r0 1.00 m 1.0 khz 100 0.08 1.080 1812sdf-1r5 ? -lfr 1r5 1.50 m 1. 0 khz 85.0 0.09 1.000 1812sdf-2r2 ? -lfr 2r2 2.20 m 1. 0 khz 60.0 0.11 0.900 1812sdf-3r3 ? -lfr 3r3 3.30 m 1. 0 khz 47.0 0.13 0.800 1812sdf-4r7 ? -lfr 4r7 4.70 m, k 1.0 khz 35.0 0.15 0.750 1812sdf-6r8 ? -lfr 6r8 6.80 m, k 1.0 khz 30.0 0.20 0.720 1812sdf-100 ? -lfr 100 10.0 k, j 1. 0 khz 23.0 0.24 0.650 1812sdf-150 ? -lfr 150 15.0 k, j 1. 0 khz 20.0 0.32 0.570 1812sdf-220 ? -lfr 220 22.0 k, j 1. 0 khz 15.0 0.60 0.420 1812sdf-330 ? -lfr 330 33.0 k, j 1. 0 khz 12.0 1.00 0.310 1812sdf-470 ? -lfr 470 47.0 k, j 1. 0 khz 10.0 1.10 0.280 1812sdf-680 ? -lfr 680 68.0 k, j 1. 0 khz 8.4 1.07 0.220 1812sdf-101 ? -lfr 101 100 k, j 1.0 khz 6.8 2.20 0.190 1812sdf-151 ? -lfr 151 150 k, j 1.0 khz 5.5 3.50 0.130 1812sdf-221 ? -lfr 221 220 k, j 1.0 khz 4.5 4.00 0.110 1812sdf-331 ? -lfr 331 330 k, j 1.0 khz 3.6 6.80 0.100 1812sdf-471 ? -lfr 471 470 k, j 1.0 khz 3.0 8.50 0.090 b. mechanical dimensions: (unit: mm) series a b c d e f type 1812sdf 4.5 0.30 3.2 0.30 2.6 0.30 1.0 (min.) 1.0 (min.) 4.0 ref. 2 type: 2 c. feature: 1. ? (tolerance): j = 5%, k = 10%, m = 20%. 2. operating temperature: -25oc to +85oc. 3. electrical specifications at +25oc. 4. inductance measured on the hp4284a lcr meter 5. dcr measured on the 502bc milli-ohm meter. 6. i dc: inductance drops no more than 10% at rated current or the t 40oc. 7. temperature rises t < 40oc (typical) at rated current and room temperature 20oc. 8. tape and reel packing. suitabl e for ir re-flows soldering. 9. rohs compliant parts. d. applications: ? power supply line choke. ? dc-dc converters. ? notebooks. ? filters. ? telecommunications devices. special specifications are avail able for customer?s requirement.
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