Effective September 2017 Technical Data DS4311 Supersedes April 2014 DRQ Dual winding, high power density, shielded drum core power inductors Applications Desktop and servers DVD and media players Portable and handheld devices LCD panels As a transformer: SEPIC, flyback As an inductor: buck, boost, coupled inductor DC-DC Converters VRM inductor for CPU and DDR power supplies Input and output filter chokes Environmental data Product features Storage temperature range (component): Dual winding inductors that can be used as -40 C to +125 C either a single inductor, or in coupled Operating temperature range: -40 C to +125 C inductor/transformer applications (ambient plus self-temperature rise) (1:1 turns ratio) Solder reflow temperature: Four sizes of shielded drum core inductors J-STD-020 (latest revision) compliant Windings can be connected in series or parallel, offering a broad range of inductance HALOGEN and current ratings Pb HF Peak current ratings from 0.13 A to 56 A FREE RMS current ratings from 0.128 A to 17.9 A Inductance ratings from 0.33 H to 4.02 mH 200 Vac Isolation between windings Ferrite core materialDRQ Technical Data DS4311 Effective September 2017 Dual winding, high power density, shielded drum core power inductors Product specifications Parallel Ratings Series Ratings 1 3 1 3 Rated OCL I OCL I sat sat 2 4 5 2 4 5 Inductance 20% I (A) DCR Volt 20% I (A) DCR Volt rms rms Part Number (H) (H) (A) Peak typ. -sec (H) (A) Peak typ. -sec DRQ73-R33-R 0.33 0.306 6.19 14.4 0.0074 1.98 1.224 3.10 7.18 0.0296 3.96 DRQ73-1R0-R 1.00 0.992 5.25 7.97 0.0103 3.56 3.968 2.63 3.99 0.0411 7.12 DRQ73-1R5-R 1.50 1.482 4.64 6.52 0.0132 4.36 5.928 2.32 3.26 0.0527 8.72 DRQ73-2R2-R 2.20 2.070 4.11 5.52 0.0167 5.15 8.280 2.06 2.76 0.0669 10.3 DRQ73-3R3-R 3.30 3.540 3.31 4.22 0.0259 6.73 14.16 1.66 2.11 0.1035 13.5 DRQ73-4R7-R 4.70 4.422 3.09 3.78 0.0297 7.52 17.69 1.55 1.89 0.1188 15.0 DRQ73-6R8-R 6.80 6.480 2.55 3.12 0.0435 9.11 25.92 1.28 1.56 0.1742 18.2 DRQ73-8R2-R 8.20 8.930 2.19 2.66 0.0592 10.7 35.72 1.10 1.33 0.2368 21.4 DRQ73-100-R 10.0 10.30 2.08 2.47 0.0656 11.5 41.20 1.04 1.24 0.2623 23.0 DRQ73-150-R 15.0 15.01 1.83 2.05 0.0844 13.9 60.04 0.916 1.03 0.339 27.8 DRQ73-220-R 22.0 22.65 1.62 1.67 0.107 17.0 90.60 0.811 0.83 0.429 34.0 DRQ73-330-R 33.0 34.41 1.31 1.35 0.166 21.0 137.6 0.653 0.68 0.665 42.0 DRQ73-470-R 47.0 48.62 1.08 1.14 0.241 24.9 194.5 0.542 0.57 0.965 49.8 DRQ73-680-R 68.0 68.91 0.89 0.96 0.358 29.7 275.6 0.444 0.48 1.43 59.4 DRQ73-820-R 82.0 80.37 0.86 0.89 0.384 32.1 321.5 0.430 0.44 1.54 64.2 DRQ73-101-R 100 101.4 0.73 0.79 0.527 36.0 405.6 0.367 0.39 2.11 72.0 DRQ73-151-R 150 150.9 0.58 0.65 0.851 44.0 603.6 0.289 0.32 3.41 88.0 DRQ73-221-R 220 223.3 0.52 0.53 1.05 53.5 893.2 0.260 0.27 4.20 107 DRQ73-331-R 330 325.5 0.42 0.44 1.59 64.5 1302 0.211 0.22 6.36 129 DRQ73-471-R 470 465.8 0.35 0.37 2.36 77.2 1863 0.173 0.18 9.44 154 DRQ73-681-R 680 676.5 0.29 0.31 3.47 93.1 2706 0.143 0.15 13.88 186 DRQ73-821-R 820 821.7 0.27 0.28 3.93 103 3287 0.134 0.14 15.72 206 DRQ73-102-R 1000 995.0 0.26 0.25 4.34 113 3980 0.128 0.13 17.36 226 1. Open Circuit Inductance Test Parameters: 100 kHz, 0.25 V , 0.0 Adc 6. Turns Ratio (1:3):(2-4) 1:1 rms Parallel: (1,2 -4,3) Series: (1-4) tie (2-3) 7. Part number definition: DRQxxx-yyy- 2. RMS current for an approximate DT of 40 C without core loss. - DRQxxx = product code and size, It is recommended that the temperature of the part not exceed +125 C. - yyy = inductance value in H, 3. Peak current for approximately 30% roll-off at +20 C - R = decimal point. If no R is present, third character = of zeros 4. DCR limits +20 C - -R suffix = RoHS complian 5. Applied Volt-Time product (V-s) across the inductor. This value represents the applied V-s at 100 kHz necessary to generate a core loss equal to 10% of the total losses for a 40 C temperature rise. www.eaton.com/electronics 2