SD38 Series Low Profile, Shielded Inductors Description RoHS 2002/95/EC • 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 • Ferrite core material Applications • Digital cameras, cellular phones, CD players, and PDAs • PCMCIA cards • GPS systems Environmental Data • Storage temperature range: -40°C to +125°C • Operating ambient temperature range: -40°C to +85°C (range is application specific). Temperature rise is approximately 40°C at rated rms current • Solder reflow temperature: +260°C max for 10 seconds max. Part Number SD3812-R47-R SD3812-1R0-R SD3812-1R2-R SD3812-1R5-R SD3812-2R2-R SD3812-3R3-R SD3812-4R7-R SD3812-6R8-R SD3812-8R2-R SD3812-100-R SD3812-150-R SD3812-220-R SD3812-330-R SD3812-470-R SD3812-680-R SD3812-820-R SD3812-101-R SD3812-151-R SD3812-221-R SD3814-R47-R SD3814-R82-R SD3814-1R2-R SD3814-1R5-R SD3814-2R2-R SD3814-3R3-R SD3814-4R7-R SD3814-6R8-R SD3814-8R2-R SD3814-100-R SD3814-150-R SD3814-220-R SD3814-330-R SD3814-470-R SD3814-680-R Rated Inductance (µH) 0.47 1.0 1.2 1.5 2.2 3.3 4.7 6.8 8.2 10.0 15.0 22.0 33.0 47.0 68.0 82.0 100.0 150.0 220.0 0.47 0.82 1.2 1.5 2.2 3.3 4.7 6.8 8.2 10.0 15.0 22.0 33.0 47.0 68.0 OCL (1) +/-15% (µH) 0.405 0.845 1.125 1.445 2.205 3.125 4.805 6.845 8.405 10.125 15.125 21.125 32.805 47.045 68.445 80.645 99.405 149.645 218.405 0.360 0.752 1.001 1.286 1.962 2.781 4.276 6.768 8.228 9.830 14.458 21.186 32.151 47.210 67.324 (1) Test Parameters: 100KHz, 0.100Vrms, 0.0Adc. (2) RMS current for an approximate ∆T of 40°C without core loss. It is recommended that the temperature of the part not exceed 125°C. De-rating is necessary for AC currents. (3) Peak current for approximately 30% rolloff at 20°C. Part Marking Designator A B C D E F G H I J K L M N O P Q R S A B C D E F G H I J K L M N O Packaging • Supplied in tape and reel packaging, 4,150 parts per 13" reel Irms (2) Amperes Isat (3) Amperes 2.53 2.00 1.71 1.58 1.32 1.10 0.87 0.80 0.690 0.662 0.539 0.499 0.399 0.327 0.269 0.259 0.217 0.178 0.160 2.81 2.18 1.85 1.76 1.43 1.31 1.06 0.87 0.753 0.713 0.574 0.519 0.418 0.346 0.285 3.89 2.69 2.33 2.06 1.67 1.40 1.13 0.95 0.854 0.778 0.636 0.538 0.432 0.361 0.299 0.276 0.248 0.202 0.167 4.44 3.08 2.67 2.35 1.90 1.60 1.29 1.03 0.930 0.851 0.702 0.580 0.471 0.388 0.325 DCR (4) (Ω) Typ. 0.030 0.048 0.066 0.078 0.111 0.159 0.256 0.299 0.406 0.441 0.665 0.776 1.212 1.809 2.666 2.885 4.099 6.130 7.585 0.020 0.033 0.046 0.051 0.077 0.093 0.141 0.207 0.279 0.311 0.481 0.589 0.908 1.322 1.951 Volt (5) u-sec Typ. 2.52 3.64 4.20 4.76 5.88 7.0 8.7 10.4 11.5 12.6 15.4 18.2 22.7 27.2 32.8 36 39 48 59 2.16 3.12 3.60 4.08 5.04 6.0 7.4 9.4 10.3 11.3 13.7 16.6 20.4 24.7 29.5 (4) DCR limits @ 20°C. (5) Applied Volt-Time product (V-uS) across the inductor at 100kHz necessary to generate a core loss equal to 10% of the total losses for 40°C temperature rise. De-rating of the Irms is required to prevent excessive temperature rise. SD38 Series Low Profile, Shielded Inductors Part Number SD3814-820-R SD3814-101-R SD3814-151-R SD3814-221-R SD3814-331-R SD3814-471-R SD3814-681-R Rated Inductance (µH) 82.0 100.0 150.0 220.0 330.0 470.0 680.0 OCL (1) +/-15% (µH) 81.101 98.794 149.026 217.342 326.812 470.031 680.320 Part Marking Designator P Q R S T U V Isat (3) Amperes 0.270 0.228 0.191 0.170 0.136 0.111 0.100 0.296 0.268 0.219 0.181 0.148 0.123 0.102 BOTTOM VIEW TOP VIEW SIDE VIEW 4.8 MA X 3.65 typ Pin #1 indicator Marking (see note A) 1.2 max 0.09 max no plating 1.25 ±0.12 2.03 ±.02 4.0 max 4.0 max 0.415 min RECOMMENDED PCB LAYOUT SCHEMATIC 1.0 2 plcs 2.5 2plcs 4.0 typ 5.0 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. SD3814 Series TOP VIEW SIDE VIEW Pin #1 indicator Marking (see note A) BOTTOM VIEW 4.8 MA X 3.65 typ 0.09 max no plating 1.4 max 1.25 ±0.12 2.03 ±.02 4.0 max DCR (4) (Ω) Typ. 2.174 3.048 4.359 5.480 8.59 12.85 15.78 Volt (5) u-sec Typ. 32 36 44 53 65 78 94 (4) DCR limits @ 20°C. (5) Applied Volt-Time product (V-uS) across the inductor at 100kHz necessary to generate a core loss equal to 10% of the total losses for 40°C temperature rise. De-rating of the Irms is required to prevent excessive temperature rise. (1) Test Parameters: 100KHz, 0.100Vrms, 0.0Adc. (2) RMS current for an approximate ∆T of 40°C without core loss. It is recommended that the temperature of the part not exceed 125°C. De-rating is necessary for AC currents. (3) Peak current for approximately 30% rolloff at 20°C. Mechanical Diagrams SD3812 Series Irms (2) Amperes 4.0 max 0.415 min RECOMMENDED PCB LAYOUT 1.0 2 plcs SCHEMATIC 2.5 2 plcs 4.0 typ 5.0 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. SD38 Series Low Profile, Shielded Inductors Packaging Information SD3812/SD3814 Series 4.00 2.00 ± 0.05 1.5 Dia min. 1.5 Dia. +0.1/-0.0 1.75 Ao=5.1mm Bo=4.6mm Ko=1.6mm 12.0 +/-0.3 Bo 5.50 4.5 4.5 Ao Ko Parts packaged on 13" Diameter reel, 4,150 parts per reel. 8.0 SECTION A-A Direction of feed Inductance Characteristics OCL vs Isat SD3814 OCL vs Isat SD3812 100 90 80 100 90 OCL (%) 80 OCL (%) 70 60 50 40 30 70 60 50 40 30 20 10 0 20 10 0 0 0 10 20 30 40 50 60 70 80 90 100 110 120 130 10 20 30 40 50 60 70 80 90 10 11 12 13 14 15 16 0 0 0 0 0 0 0 % of Isat % of Isat Core Loss % of Losses from Irms (maximum) Irms DERATING WITH CORE LOSS % of Applied Volt-µSecond PM-4318 3/07 © Cooper Electronic Technologies 2007 Visit us on the Web at www.cooperbussmann.com 1225 Broken Sound Pkwy. 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