description ? 3.8mm x 3.8mm shielded drum cores available in two heights: 1.2mm and 1.4mm ? current range from 4.44 to 0.100 amps ? inductance range from 0.47 uh to 680 uh ? ferrite shielded, low emi ? rohs compliant (-r option) applications ? digital cameras, cellular phones, cd players, and pdas ? pcmcia cards ? gps systems environmental data ? storage temperature range: -40 to +125? ? operating ambient temperature range: -40 to +85? (range is application specific). temperature rise is approximately 40c at rated rms current ? infrared reflow temperature: +240c for 30 seconds maximum packaging ? supplied in tape and reel packaging, 4,150 parts per 13" reel sd38 series low profile, shielded inductors (1) test parameters: 100khz, 0.100vrms, 0.0adc. (2) rms current f or an approximate ? t of 40 without core loss. it is recommended that the temper ature of the par t not e xceed 125 c . de-rating is necessary for ac currents. (3) p eak current for approximately 30% rolloff at 20. (4) dcr limits @ 20. (5) applied volt-time product (v-us) across the inductor at 100khz necessary to gener ate a core loss equal to 10% of the total losses f or 40 c temper ature r ise. de-rating of the irms is required to prevent excessive temperature rise. part number rated ocl (1) part irms (2) isat (3) dcr (4) volt (5) inductance +/-15% marking amperes amperes ( ) u-sec ( h) (?) designator typ. typ. sd3812-r47 0.47 0.405 a 2.53 3.89 0.030 2.52 sd3812-1r0 1.0 0.845 b 2.00 2.69 0.048 3.64 sd3812-1r2 1.2 1.125 c 1.71 2.33 0.066 4.20 sd3812-1r5 1.5 1.445 d 1.58 2.06 0.078 4.76 sd3812-2r2 2.2 2.205 e 1.32 1.67 0.111 5.88 sd3812-3r3 3.3 3.125 f 1.10 1.40 0.159 7.0 sd3812-4r7 4.7 4.805 g 0.87 1.13 0.256 8.7 sd3812-6r8 6.8 6.845 h 0.80 0.95 0.299 10.4 sd3812-8r2 8.2 8.405 i 0.690 0.854 0.406 11.5 sd3812-100 10.0 10.125 j 0.662 0.778 0.441 12.6 sd3812-150 15.0 15.125 k 0.539 0.636 0.665 15.4 sd3812-220 22.0 21.125 l 0.499 0.538 0.776 18.2 sd3812-330 33.0 32.805 m 0.399 0.432 1.212 22.7 sd3812-470 47.0 47.045 n 0.327 0.361 1.809 27.2 sd3812-680 68.0 68.445 o 0.269 0.299 2.666 32.8 sd3812-820 82.0 80.645 p 0.259 0.276 2.885 36 sd3812-101 100.0 99.405 q 0.217 0.248 4.099 39 sd3812-151 150.0 149.645 r 0.178 0.202 6.130 48 sd3812-221 220.0 218.405 s 0.160 0.167 7.585 59 sd3814-r47 0.47 0.360 a 2.81 4.44 0.020 2.16 sd3814-r82 0.82 0.752 b 2.18 3.08 0.033 3.12 SD3814-1R2 1.2 1.001 c 1.85 2.67 0.046 3.60 sd3814-1r5 1.5 1.286 d 1.76 2.35 0.051 4.08 sd3814-2r2 2.2 1.962 e 1.43 1.90 0.077 5.04 sd3814-3r3 3.3 2.781 f 1.31 1.60 0.093 6.0 sd3814-4r7 4.7 4.276 g 1.06 1.29 0.141 7.4 sd3814-6r8 6.8 6.768 h 0.87 1.03 0.207 9.4 sd3814-8r2 8.2 8.228 i 0.753 0.930 0.279 10.3 sd3814-100 10.0 9.830 j 0.713 0.851 0.311 11.3 sd3814-150 15.0 14.458 k 0.574 0.702 0.481 13.7 sd3814-220 22.0 21.186 l 0.519 0.580 0.589 16.6 sd3814-330 33.0 32.151 m 0.418 0.471 0.908 20.4 sd3814-470 47.0 47.210 n 0.346 0.388 1.322 24.7 sd3814-680 68.0 67.324 o 0.285 0.325 1.951 29.5 sd3814-820 82.0 81.101 p 0.270 0.296 2.174 32 sd3814-101 100.0 98.794 q 0.228 0.268 3.048 36 sd3814-151 150.0 149.026 r 0.191 0.219 4.359 44
( 1) test parameters: 100khz, 0.100vrms, 0.0adc. (2) rms current for an approximate ? t of 40 without core loss. it is r ecommended that the temperature of the part not exceed 125. d e-rating is necessary for ac currents. (3) peak current for approximately 30% rolloff at 20. ( 4) dcr limits @ 20. (5) applied volt-time product (v-us) across the inductor at 100khz necessary to g enerate a core loss equal to 10% of the total losses for 40 temperature rise. d e-rating of the irms is required to prevent excessive temperature rise. part number rated ocl (1) part irms (2) isat (3) dcr (4) volt (5) inductance +/-15% marking amperes amperes ( ) u-sec (?) ( h) designator typ. typ. sd3814-221 220.0 217.342 s 0.170 0.181 5.480 53 sd3814-331 330.0 326.812 t 0.136 0.148 8.59 65 sd3814-471 470.0 470.031 u 0.111 0.123 12.85 78 sd3814-681 680.0 680.320 v 0.100 0.102 15.78 94 sd38 series low profile, shielded inductors mechanical diagrams t op view side view b ottom view recommended pcb l ayout schem atic 1.2 max 1.25 0.12 5.0 1.0 2 plcs 2.5 2plcs 4.0 typ 4.0 max 4.0 max pin #1 indicator ma rking ( see note a) 2 .03 .0 2 0.09 max n o plating 4.8 ma x 3 .65 t yp 0 . 4 15 min sd3812 ser ies note a: 3 digit marking. first digit indicates inductance value per chart above. second digit indicates bi-weekly date code. third digit of year produced. box indicates sd3814 part. t op view side view b ottom view recommended pcb l ayout schem atic 1.4 max 1.25 0.12 2.5 2 plcs 1.0 2 plcs 4.0 typ 5.1 max 4.0 max 4.0 max pin #1 indicator marking (see note a) 2.03 .02 0.09 max no plating 4.8 ma x 3.65 typ 0.415 min sd3814 series note a: 3 digit mar king. first digit indicates inductance v alue per char t abo ve. second digit indicates bi-weekly date code. third digit of y ear produced. box indicates sd3814 part. option code option code description -r rohs compliant version
sd38 series low profile, shielded inductors p ackaging information ko 1.5 dia min. bo 8.0 4.00 2.00 0.05 1.5 dia. +0.1/-0.0 1.75 5.50 12.0 +/-0.3 ao 4 .5 4.5 s ection a-a direction of feed sd3812/sd3814 series ao=5.1mm bo=4.6mm ko=1.6mm p arts packaged on 13" diameter reel, 4,150 parts per reel. rolloff ocl vs isat sd3812 0 10 20 30 4 0 50 60 70 80 90 100 0 10 20 30 40 50 60 70 80 90 100 110 120 130 % of isat o c l ( % ) ocl vs isat sd3814 0 10 20 30 40 50 60 70 80 90 100 0 10 20 30 40 50 60 70 80 90 10 0 11 0 12 0 13 0 14 0 15 0 16 0 % of isat o c l ( % ) core loss irms der ating with core loss % of applied v olt- second % o f l o s s e s f r o m i r m s ( m a x i m u m ) visit us on the web at www.cooperet.com 3601 quantum boulevard boynton beach, florida 33426-8638 tel: +1-561-752-5000 toll free: +1-888-414-2645 fax: +1-561-742-1178 this bulletin is intended to present product design solutions and technical information that will help the end user with design applications. cooper electronic technologies reserves the right, without notice, to change design or construction of any products and to discontinue or limit distribution of any products. cooper electronic technologies also reserves the right to change or update, without notice, any technical information contained in this bulletin. once a product has been selected, it should be tested by the user in all possible applications. life support policy: cooper electronic t echnologies does not authorize the use of any of its products for use in life support devices or systems without the express written approval of an officer of the company . life support systems are devices which support or sustain life, and whose failure to per form, when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in significant injur y to the user . pm-4318 9/05 cooper electronic technologies 2005
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