SMT POWER INDUCTORS Power Beads - Volta 1 & 2 Series Height: 3.2mm and 4.5mm Max Footprint: 7.0 x 6.4mm Max and 8.9 x 6.4mm Max Current Rating: up to 16A Inductance Range: 0.1µH to 0.6µH Frequency Range: up to 2MHz Electrical Specifications @ 25°C — Operating Temperature -40°C to +130°C Inductance @Irated (nH ± 20%) Part Number Irated (ADC) DCR (mΩ) 1 Saturation Current 2 (ADC) Inductance @0ADC (nH ± 20%) TYP MAX VOLTA 1 P1681 95 15 0.31 0.39 100 PA0274 475* 6.0 1.60 1.8* 700 VOLTA 2 PA0229 92 16 0.68 0.80 100 P2005 142.5 15 0.45 0.56 150 P2004 190 15 0.45 0.56 200 PA0277 600* 10.7 2.3 2.53* 700 * DCR and Inductance rating for indicated parts is for both windings tied in series. 25°C 100°C Heating Current 3 (A) 18 7 16.2 4.8 15 12 36 18 16.8 12.6 30 16.2 15.1 8.0 16 15 15 10.7 Trise4 Factor K0 K1 K2 1.0032 1.4000 .00319 .00638 .07381 .24632 2.2458 2.2458 2.2458 2.0400 .00638 .00638 .00638 .01276 .03975 .05961 .07949 .13196 Schematic Mechanicals Volta 1 Volta 2 .276 MAX 7,01 P1681 Date Code Country of Origin .350 MAX 8,89 .255 6,48 MAX .130 3,30 Date Code Country of Origin 2 .150 3,81 2 SUGGESTED PAD LAYOUT .075 1,91 .350 MAX 8,89 4 .255 MAX 3 6,48 PA0274 .350 8,89 2X.079 2,01 SUGGESTED PAD LAYOUT .085 2,16 Date Code Country of Origin .135 3,43 .010 0,25 .280 7,11 .276 MAX 7,01 1 .177 MAX 4,50 .150 3,81 .125 MAX 3,18 2X.065 1,65 1 2 PA0277 Date Code Country of Origin 4 .296 7,52 .085 2X 2,16 .130 MAX 3,30 .010 0,25 .150 3,81 4X .065 1,65 2X 2X 2X .177 MAX 4,50 .031 1,79 .020 0,51 1 4X .079 2,01 .157 4,00 .012 0,30 .079 2,00 .295 7,49 .630 ± .012 16,00 ± 0,30 .285 7,24 TAPE & REEL LAYOUT .069 1,75 .270 6,86 .472 12,00 USER DIRECTION OF FEED .060 1,52 2X 4 .099 2,51 2 2X 2X .040 1,02 .015 0,38 3 PA0274 PA0277 SUGGESTED PAD LAYOUT SUGGESTED PAD LAYOUT .130 3,30 .360 9,14 .040 2X 1,02 .135 3,43 .010 0,25 P1681 P2004 P2005 PA0229 Volta 1 Volta 2 Weight.........0.464 grams ....0.945 grams Tape & Reel .....1500/reel .........1000/reel .250 MAX 6,35 3 .045 2X 1,14 .065 2X 1,65 1 .250 6,35 MAX .110 2,80 P2004/P2005 PA0229 .100 2,54 .010 0,25 Core Loss Factor4 .180 4,57 .012 0,30 .157 4,00 .079 2,00 .295 7,49 .630 ± .012 16,00 ± 0,30 .340 8,64 TAPE & REEL LAYOUT .069 1,75 .265 6,73 .472 12,00 Dimensions: Inches mm Unless otherwise specified, all tolerances are ± .010 0,25 USER DIRECTION OF FEED US 858 674 8100 • UK 44 1483 401 700 • France 33 3 84 35 04 04 • Singapore 65 6287 8998 • Taiwan 886 2 2698 0228 • Hong Kong 852 2788 6588 • http://www.pulseeng.com PC500.D (1/05) 6 SMT POWER INDUCTORS Power Beads - Volta 1 & 2 Series Notes from Tables 1. The rated current as listed is either the saturation current or the heating current depending on which value is lower. 5. Optional Tape & Reel packaging can be ordered by adding a “T” suffix to the part number, (i.e. PA0274T). 2. The saturation current is the current which causes the inductance to drop by 10% at the stated ambient temperatures (-40°C, 25°C, 125°C). This current is determined by placing the component in the specified ambient environment and applying a short duration pulse current (to eliminate self-heating effects) to the component. Estimated Temperature Rise: .833 Trise = Coreloss (mW) + Copper Loss (mW) (°C) K0 Coreloss = K1 * ( Fsw(kHz)) 1.6688 * (K2 * dI)2.17 (mW) Copper Loss = Irms2 * DCR(mΩ) (mW) 3. The heating current is the DC current which causes the temperature of the part to increase by approximately 30°C. This current is determined by mounting the component on a PCB with .25" wide, 3 oz. equivalent copper traces, and applying the current to the device for 30 minutes. ½ (Arms) IDC 2 + dI 2 12 Fsw(kHz) = switching frequency (kHz) dI = delta I across the component (A) Irms = 4. In high volt*time applications, additional heating in the component can occur due to core losses in the inductor which may neccessitate derating the current in order to limit the temperature rise of the component. In order to determine the approximate total losses (or temperature rise) for a given application both copper losses and core losses should be taken into account. The temperature of the component (ambient temperature + temperature rise) should be within the listed operating temperature range. Inductance vs Current Characteristics P1681, P2005, P2004 P3 Percent of Initial Inductance (%) Percentage of Initial Inductance P2 P1 120 PA0229 Inductance vs. DC Current at 25°C 120 100 100 80 60 40 20 0 0 0.2 0.4 0.6 0.8 1.0 Normalized IDC 1.2 1.4 1.6 80 60 40 20 1.8 0 0 5 10 15 20 25 30 35 40 45 Current (ADC) P1 - Initial Inductance, Lo (.1VRMS, 1MHz, 0ADC, 25°C) P2 - Inductance (typically 95% LO) at Rated IDC. P3 - Inductance (typically 90% LO) at IPK. 25° 100° Normalized Inductance Percent of Initial Inductance (%) Percent of Initial Inductance (%) PA0274 Inductance vs. DC Current at 25°C 120 100 80 60 40 20 0 0 2 4 6 8 10 12 Current (ADC) PA0277 Inductance vs. DC Current at 25°C 120 100 80 60 40 20 0 0 2.5 5 7.5 10 12.5 15 17.5 20 Current (ADC) US 858 674 8100 • UK 44 1483 401 700 • France 33 3 84 35 04 04 • Singapore 65 6287 8998 • Taiwan 886 2 2698 0228 • Hong Kong 852 2788 6588 • http://www.pulseeng.com 7 PC500.D (1/05)