HCF1305 Series Power Inductors Description RoHS 2002/95/EC • 125°C maximum total temperature operation • 12.5mm x 12.5mm x 5.0mm ferrite core material package • Low profile surface mount inductors designed for higher speed switch mode applications requiring low voltage and high current • Design utilizes ferrite core with high DC bias resistance and low core loss • Inductance range from 0.47µH to 4.7µH • Current range from 36.0 Amps to 10.4 Amps • Frequency range 100kHz to 1MHz Applications • Next generation processors • High current DC-DC converters • VRM, multi-phase buck regulators • PC Workstations, Routers, Servers • Telecom soft switches, Base stations 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 HCF1305-R47-R HCF1305-R56-R HCF1305-1R0-R HCF1305-1R2-R HCF1305-1R8-R HCF1305-2R2-R HCF1305-3R0-R HCF1305-3R3-R HCF1305-4R0-R HCF1305-4R7-R Rated Inductance (µH) 0.47 0.56 1.00 1.20 1.80 2.20 3.00 3.30 4.00 4.70 Packaging • Supplied in tape and reel packaging, 600 parts per reel OCL (1) µH ± 20% Irms (2) Amperes Isat (3) Amperes Isat2 (4) Amperes 0.47 0.56 1.00 1.20 1.80 2.20 3.00 3.30 4.00 4.70 32.0 32.0 22.0 22.0 16.3 16.3 13.2 13.2 10.9 10.9 36.0 30.0 24.0 20.0 18.0 15.0 14.4 12.5 12.0 10.4 30.0 22.5 20.0 15.0 15.0 11.2 12.0 9.0 10.0 7.5 1) OCL: Open Circuit Inductance test parameters: 100kHz, 0.1Vrms, 0.0Adc. OCL@-40°C can be lower than OCL@20°C by 15% max. 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. 3) Isat1: Amperes Peak for approximately 30% rolloff (@25°C) 4) Isat2: Amperes Peak for approximately 30% rolloff (@125°C) DCR mΩ@20°C (Typical) 0.83 0.83 1.58 1.58 2.58 2.58 4.08 4.08 6.0 6.0 DCR mΩ@20°C (Maximum) 1.00 1.00 1.90 1.90 3.10 3.10 4.90 4.90 7.2 7.2 K-factor (5) 21 21 14 14 10 10 8.3 8.3 6.9 6.9 5) 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). Part number definition: HCF1305-XXX-R HCF1305 = Product code and size XXX = Inductance value in uH. R = Decimal point. If no R is present, third character = #of zeros -R suffix indicates RoHS compliant Mechanical Diagrams TOP VIEW BOTTOM VIEW A 1 RECOMMENDED PCBLAYOU T C 2 3 E SCHEMAT IC L B HCF1305-XXX wwllyy R DIMENSION TABLE FRONT VIEW F D A: 12.5max G: 4.00 Ref. B: 12.5max H: 5.40 Ref. C: 5.0max I: 3.00 Ref. D: 2.00 ref J: 4.00 Ref. E: 2.40 +/- 0.10 K: 4.00 Ref. F: 6.90 +/- 0.30 L: 3.4 Ref. 1 K 2 H G Dimensions in Millimeters J wwllyy=Date code, R=Revision Level I I HCF1305 Series Power Inductors Packaging Information 1.5 dia +0.1/-0.0 4.0 1.5 dia min 2.0 A 1.75 HCF1305-XXX wwlly y-R 11.5 B0 24.0 +/-0.3 K0 A0 A 16.00 SECTION A-A A0= 12.60 mm B0= 12.60 mm K0= 5.50 mm User direction of feed Parts packaged on a 13" Diameter reel. 600 parts per reel. Core Loss 10 500kHz 1MHz 300kHz 1 200kHz Core Loss (W) 100kHz 0.1 0.01 0.001 0.0001 1 10 100 1000 Bp-p (m T) Temperature Rise vs. Total Loss Temperature Rise Vs. Power Loss Temperature Rise (ºC) 100 80 60 40 20 0 0 0.4 0.8 1.2 Total Pow er Loss (W) 1.6 2 HCF1305 Series Power Inductors Inductance Characteristics Normalized Rolloff Curves at 25 Deg. C 100.0% 90.0% % of OCL 80.0% 70.0% 60.0% R47, 1R0, 1R8, 3R0 and 4R0 R56, 1R2 and 2R2 3R3 and 4R7 50.0% 40.0% 0.0% 20.0% 40.0% 60.0% 80.0% % of ISAT1 100.0% 120.0% 100.0% 120.0% 140.0% Normalized Rolloff Curves at 125 Deg. C 100.0% 90.0% % of OCL 80.0% 70.0% 60.0% 50.0% R47, 1R0, 1R8, 3R0 and 4R0 R56, 1R2 and 2R2 3R3 and 4R7 40.0% 30.0% 0.0% PM-4133 3/07 © Cooper Electronic Technologies 2007 20.0% 40.0% 60.0% 80.0% % of ISAT2 140.0% 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. 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