DR1040 Series Low Profile Power Inductors Description RoHS 2002/95/EC • 125°C maximum total temperature operation • Low profile surface mount inductor • 10.3mm x 10.5mm x 4.0mm shielded drum core • Ferrite core material • Inductance range from 1.5µH to 330µH • Current range from 10.0 Amps to 0.52 Amps • Frequency range up to 1MHz Applications • Notebook power, Portable devices • Wireless modems, ADSL line cards • Point of load power supplies • Battery chargers, Video Cards • MP3 player, PDA’s, DVD players • LED driver for notebook computer • Navigation system, LCD backlighting • Buck, Boost, or Forward inductor 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 DR1040-1R5-R DR1040-2R5-R DR1040-3R8-R DR1040-5R2-R DR1040-7R0-R DR1040-8R2-R DR1040-100-R DR1040-150-R DR1040-220-R DR1040-330-R DR1040-470-R DR1040-680-R DR1040-820-R DR1040-101-R DR1040-151-R DR1040-221-R DR1040-331-R Rated Inductance (µH) 1.5 2.5 3.8 5.2 7.0 8.2 10 15 22 33 47 68 82 100 150 220 330 Packaging • Supplied in tape and reel packaging, 850 per reel OCL (1) µH±30% Irms(2) Amperes Isat (3) Amperes 1.4 2.4 3.6 5.2 6.8 8.1 9.6 14.9 21.1 32.6 45.8 65.3 86.8 101.4 148.3 216.2 323.4 6.50 6.10 5.50 5.40 4.50 3.98 3.80 3.10 2.50 2.20 1.90 1.42 1.29 1.25 0.85 0.70 0.52 10.00 7.80 6.40 5.50 4.80 4.60 4.40 3.60 2.90 2.45 2.10 1.65 1.47 1.35 1.15 0.92 0.70 (1) Open Circuit Inductance Test Parameters: 100kHz, 0.25V, 0.0Adc. (2) Irms: DC current for an approximate ∆T of 30°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. (3) Isat Amperes peak for approximately 35% rolloff (@25°C) DCR (Ω) mΩ @20°C (Typical) 6.0 7.0 9.6 14.0 17.0 24.0 26.0 37.0 54.0 69.0 95.0 152 214 225 356 530 810 DCR (Ω) mΩ @20°C (Maximum) 8.1 9.0 13.0 17.0 20.0 29.0 35.0 50.0 73.0 93.0 128 183 260 304 430 640 1090 K-factor (4) 15.48 12.04 9.85 8.33 7.22 6.37 5.70 4.71 4.01 3.28 2.78 2.30 2.04 1.90 1.57 1.27 1.03 (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 µH), ∆I (Peak to peak ripple current in Amps). (5) Part Number Definition: DR1040-xxx-R DR1040 = Product code and size; -xxx = Inductance value in uH; R = decimal point; If no R is present, third character = # of zeros. -R suffix = RoHS compliant DR1040 Series Low Profile Power Inductors Mechanical Diagrams TOP VIEW SIDE VIEW RECOMMENDED PCB LAYOUT BOTTOM VIEW 10.5 max 3.0 +/- 0.1 4.0 max 1 XX X wwll y R 2 1 10.3 max 1.6 2 plcs 2 3.2 2 plcs 1.2 +/- 0.15 (2 Pcs) SCHEMATI C 1 2 10.5 Ref 7.7 +/- 0.3 Dimensions are in millimeters. xxx = Inductance value in uH. R = decimal point. If no R is present third character = # of zeros. wwllyy = Date code, R = Revision level. Packaging Information 1.5 dia +0.1/-0.0 1.5 dia min 4.0 2.0 A 1.75 12.0 Bo B1 Ko 24.0 +/-0.3 XXX wwlly R A1 16.0 Ao SECTION A-A A Ao=10.8 mm Bo=11.0 mm User direction of feed A1=10.6 mm B1=10.5 mm Parts packaged on 13" Diameter reel, 850 parts per reel. Ko=4.2 mm Core Loss 1MHz 500kHz 300kHz 200kHz 10 100kHz Core Loss (W) 1 0. 1 0. 01 0. 001 1 10 100 Bp-p (mT) 1000 DR1040 Series Low Profile Power Inductors Temperature Rise vs. Loss Temperature Rise(°C) 120 100 80 60 40 20 0 0 0.2 0.4 0.6 0.8 1 1.2 Total Loss (W) Inductance Characteristics OCL vs. Isat 120.0% 100.0% % of OCL 80.0% 60.0% 40.0% -40 Deg.C +25 Deg.C +85 Deg.C 20.0% 0.0% 0.0% 20.0% 40.0% 60.0% 80.0% 100.0% 120.0% 140.0% 160.0% % of Isat PM-4147 3/07 © Cooper Electronic Technologies 2007 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.