SD3112 Series Low Profile Power Inductors Description RoHS 2002/95/EC • 125°C maximum total temperature operation • 3.1mm x 3.1mm x 1.2mm shielded drum core • Ferrite core material • Inductance range from 1.0uH to 220uH • Current range from 1.65 Amps to 0.113 Amps • Frequency range up to 4MHz Applications • Cellular phones, Digital cameras, CD players, PDA’s • Small LCD displays • LED driver and LED flash circuits • Hard disk drives • Backlighting • EL panel Environmental Data • Storage temperature range: -40°C to +125°C • Operating temperature range: -40°C to +125°C (range is application specific) • Solder reflow temperature: +260°C max. for 10 seconds maximum Part Number SD3112-1R0-R SD3112-1R5-R SD3112-2R2-R SD3112-3R3-R SD3112-4R7-R SD3112-6R8-R SD3112-8R2-R SD3112-100-R SD3112-150-R SD3112-220-R SD3112-330-R SD3112-470-R SD3112-680-R SD3112-820-R SD3112-101-R SD3112-151-R SD3112-221-R Rated Inductance (µH) 1.0 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 OCL (1) (µH) 1.11+/-30% 1.70+/-30% 2.41+/-30% 3.24+/-30% 4.72+/-30% 6.47+/-30% 8.50+/-30% 10.01+/-30% 15.28+/-20% 21.66+/-20% 33.30+/-20% 47.44+/-20% 68.10+/-20% 83.19+/-20% 99.8+/-20% 149.4+/-20% 219.9+/-20% Part Marking Designator A B C D E F G H I J K L M N O P Q (1) Open Circuit Inductance Test Parameters: 100kHz, 0.1V, 0.0Adc. (2) Irms: DC current for an approximate DT of 40°C without core loss. Derating is necessary for AC currents. PCB layout, trace thickness and width, air-flow, and proximity of other heat generating components will affect the temperature rise. It is recommended that the temperature of the part not exceed 125°C under worst case operating conditions verified in the end application. Packaging • Supplied in tape and reel packaging, 4100 per reel Irms (2) Amperes Isat (3) Amperes 1.39 1.16 0.97 0.90 0.74 0.68 0.57 0.55 0.45 0.37 0.30 0.270 0.228 0.213 0.184 0.149 0.121 1.65 1.33 1.12 0.97 0.80 0.68 0.60 0.55 0.44 0.37 0.30 0.25 0.211 0.190 0.174 0.142 0.117 DCR (Ω) typ. @ 20°C 0.069 0.099 0.140 0.165 0.246 0.291 0.408 0.446 0.654 0.953 1.48 1.85 2.56 2.93 3.95 6.01 9.12 K-factor (4) 135 110 92 79 66 56 49 45 37 31 25 21 17 16 14 12 10 (3) Isat Amperes peak for approximately 30% rolloff (@20°C) (4) K-factor: Used to determine B p-p for core loss (see graph). B p-p = K*L*∆I, B p-p(mT), K: (K factor from table), L: (Inductance in uH), ∆I (Peak to peak ripple current in Amps). SD3112 Series Low Profile Power Inductors Mechanical Diagrams Dimensions are in millimeters. Part Marking: 3 Digit Marking: (1st digit: Indicates inductance value per letter in Part Marking Designator); (2nd digit: Bi-weekly production date code); (3rd digit: Last digit of the year produced). Packaging Information Parts packaged on 13" Diameter reel, 4,100 parts per reel. Temp. Rise(°C) DC Current vs. Temperature 90 80 70 60 50 40 30 20 10 0 0 0.05 0.1 0.15 0.2 0.25 Total Loss (W) 0.3 0.35 0.4 0.45 SD3112 Series Low Profile Power Inductors Core Loss 10 1MHz 1 500kHz 300kHz 200kHz 0.1 Core Loss (W) 100kHz 0.01 50kHz 0.001 0.0001 0.00001 0.000001 1 10 100 1000 Bp-p (mT) Inductance Characteristics OCL vs Isat 120% 110% 100% 90% %% ooff OOCL C L 80% 70% -40°C 60% 50% 25°C 40% 30% 85°C 20% 10% 0% 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 110% 120% 130% 140% %% ooff I Isat s a t PM-4127 3/07 © Cooper Electronic Technologies 2006 Visit us on the Web at www.cooperbussmann.com 1225 Broken Sound Pkwy. Suite F Boca Raton, FL 33487 Tel: +1-561-998-4100 Toll Free: +1-888-414-2645 Fax: +1-561-241-6640 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 Technologies 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 perform, when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in significant injury to the user.