SDH3812 Series Low Profile, High Power, Shielded Inductors Description RoHS 2002/95/EC • 125°C maximum total temperature operation • 3.8mm x 3.8mm x 1.2mm shielded drum core • High power density, compact footprint • Inductance range from 0.47uH to 220uH • Current range from 4.2 Amps to 0.16 Amps • Ferrite shielded, low EMI • Ferrite core material Applications • Buck or Boost inductor • Noise filtering output filter chokes • LED photo flash • Handheld devices • Notebook and battery power • Cellular phones / PDA’s / GPS systems • Digital cameras / MP3 players / IP phones 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 SDH3812-R47-R SDH3812-1R0-R SDH3812-1R2-R SDH3812-1R5-R SDH3812-2R2-R SDH3812-3R3-R SDH3812-4R7-R SDH3812-6R8-R SDH3812-8R2-R SDH3812-100-R SDH3812-150-R SDH3812-220-R SDH3812-330-R SDH3812-470-R SDH3812-680-R SDH3812-820-R SDH3812-101-R SDH3812-151-R SDH3812-221-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 OCL (1) µH ± 20% 0.43 0.89 1.17 1.49 2.23 3.17 4.96 6.70 8.01 9.67 14.45 22.00 32.90 46.20 67.40 81.80 97.50 149.00 218.50 Part Marking Designator A B C D E F G H I J K L M N O P Q R S (1) Open Circuit Inductance Test Parameters: 100kHz, 0.1V, 0.0Adc. (2) Irms: DC current for an approximate ∆T 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. (3) Isat Amperes peak for 30% maximum rolloff (@25°C) Packaging • Supplied in tape and reel packaging, 4150 per reel Irms (2) Amperes Isat (3) Amperes 2.69 2.07 1.77 1.67 1.37 1.14 0.94 0.85 0.73 0.69 0.56 0.50 0.41 0.34 0.31 0.26 0.25 0.20 0.16 4.20 3.00 2.60 2.30 1.90 1.60 1.25 1.05 0.96 0.88 0.72 0.61 0.49 0.41 0.34 0.31 0.28 0.22 0.19 DCR Ω @20°C (Typical) 0.027 0.045 0.062 0.069 0.104 0.148 0.220 0.265 0.342 0.398 0.612 0.750 1.132 1.583 2.000 2.750 3.042 4.542 7.017 DCR Ω @20°C (Maximum) 0.032 0.054 0.074 0.083 0.124 0.177 0.264 0.317 0.410 0.478 0.735 0.900 1.358 1.900 2.400 3.300 3.650 5.450 8.420 K-factor (4) 145.2 100.6 87.1 76.9 62.2 52.3 42.2 35.3 33.5 30.4 23.8 20.1 16.1 13.8 11.4 10.3 9.4 7.6 6.3 (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). (5) Part Number Definition: SDH3812-xxx-R SDH3812 = 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 SDH3812 Series Low Profile, High Power, Shielded Inductors Mechanical Diagrams Dimensions are in millimeters. Part Marking: 3 Digit Marking: (1st digit: Indicates inductance value per Part Marking Designator in chart above); (2nd digit: Bi-weekly production date code); (3rd digit: Last digit of the year produced). 1.5 Dia Packaging Information 1.5 Dia. 4.00 2.00 A 1.75 1 A0 = 4.9 mm B0 = 4.9 mm K0 = 1.6 mm Bo 10.25 XX X 12.0 +/-0.3 5.50 Ko 2 4.2 A0 8 4.2 SECTION A-A A Direction of feed Parts packaged on 13" Diameter reel, 4,150 parts per reel. Core Loss 1 500kHz 1MHz 0.1 200kHz 0.01 Core Loss (W) 300kHz 100kHz 0.001 0.0001 0.00001 0.000001 1 10 100 Bp-p (m T) 1000 SDH3812 Series Low Profile, High Power, Shielded Inductors Temperature Rise vs. Loss 100 Temperature Rise (°C) 80 60 40 20 0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 Total Loss (W) Inductance Characteristics OCL Vs. Isat 120.00% 100.00% OCL % 80.00% 60.00% 40.00% 20.00% 0.00% 0.00% +25 Deg. C +85 Deg. C - 40 Deg. C 20.00% 40.00% 60.00% 80.00% 100.00% 120.00% 140.00% 160.00% Isat % PM-4143 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.