SDH3812 Series Low Profile, High Power, Shielded Inductors Description RoHS 2002/95/EC 125C 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 Packaging Cellular phones / PDAs / GPS systems Supplied in tape and reel packaging, 4150 per reel Digital cameras / MP3 players / IP phones Environmental Data Storage temperature range: -40C to +125C Operating temperature range: -40C to +125C (range is application specific) Solder reflow temperature: +260C max. for 10 seconds maximum Part Number Rated OCL (1) Part Irms (2) Isat (3) DCR DCR K-factor Inductance H 20% Marking Amperes Amperes 20C 20C (4) (H) Designator (Typical) (Maximum) SDH3812-R47-R 0.47 0.43 A 2.69 4.20 0.027 0.032 145.2 SDH3812-1R0-R 1.0 0.89 B 2.07 3.00 0.045 0.054 100.6 SDH3812-1R2-R 1.2 1.17 C 1.77 2.60 0.062 0.074 87.1 SDH3812-1R5-R 1.5 1.49 D 1.67 2.30 0.069 0.083 76.9 SDH3812-2R2-R 2.2 2.23 E 1.37 1.90 0.104 0.124 62.2 SDH3812-3R3-R 3.3 3.17 F 1.14 1.60 0.148 0.177 52.3 SDH3812-4R7-R 4.7 4.96 G 0.94 1.25 0.220 0.264 42.2 SDH3812-6R8-R 6.8 6.70 H 0.85 1.05 0.265 0.317 35.3 SDH3812-8R2-R 8.2 8.01 I 0.73 0.96 0.342 0.410 33.5 SDH3812-100-R 10.0 9.67 J 0.69 0.88 0.398 0.478 30.4 SDH3812-150-R 15.0 14.45 K 0.56 0.72 0.612 0.735 23.8 SDH3812-220-R 22.0 22.00 L 0.50 0.61 0.750 0.900 20.1 SDH3812-330-R 33.0 32.90 M 0.41 0.49 1.132 1.358 16.1 SDH3812-470-R 47.0 46.20 N 0.34 0.41 1.583 1.900 13.8 SDH3812-680-R 68.0 67.40 O 0.31 0.34 2.000 2.400 11.4 SDH3812-820-R 82.0 81.80 P 0.26 0.31 2.750 3.300 10.3 SDH3812-101-R 100.0 97.50 Q 0.25 0.28 3.042 3.650 9.4 SDH3812-151-R 150.0 149.00 R 0.20 0.22 4.542 5.450 7.6 SDH3812-221-R 220.0 218.50 S 0.16 0.19 7.017 8.420 6.3 (1) Open Circuit Inductance Test Parameters: 100kHz, 0.1V, 0.0Adc. (4) K-factor: Used to determine B p-p for core loss (see graph). (2) Irms: DC current for an approximate T of 40C without core loss. Derating is B p-p = K*L*I, B p-p(mT), K: (K factor from table), L: (Inductance in uH), necessary for AC currents. PCB layout, trace thickness and width, air-flow, and I (Peak to peak ripple current in Amps). proximity of other heat generating components will affect the temperature rise. It (5) Part Number Definition: SDH3812-xxx-R is recommended that the temperature of the part not exceed 125C under worst SDH3812 = Product code and size -xxx = Inductance value in uH case operating conditions verified in the end application. R = decimal point If no R is present, third character = of zeros. (3) Isat Amperes peak for 30% maximum rolloff ( 25C) -R suffix = RoHS compliantSDH3812 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 1.75 2.00 A 1 12.0 A0 = 4.9 mm XXX 10.25 +/-0.3 Bo B0 = 4.9 mm 5.50 K0 = 1.6 mm 4.2 4.2 2 Ko A0 8 A SECTION A-A Direction of feed Parts packaged on 13 Diameter reel, 4,150 parts per reel. Core Loss 1 500kHz 300kHz 1MHz 0.1 200kHz 0.01 100kHz 0.001 0.0001 0.00001 0.000001 1 10 100 1000 Bp-p (mT) Core Loss (W)