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DRQ Series
Dual Winding, Shielded Inductors/Transformer
* Peak current ratings from 0.13 amps to 56 amps * RMS current ratings from 0.128 amps to 17.9 amps * Inductance ratings from 0.33H to 4.02mH * Surface Mount * 200Vac Isolation between windings * Ferrite core material Applications * 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 * Storage temperature: -40C to +125C * Operating temperature: -40C to +125C (range is application specific). * Solder reflow temperature: 260C max. for 10 seconds max. Packaging * Supplied in tape and reel packaging, 1350 (DRQ73), 1100 (DRQ74), 600 (DRQ125), and 350 (DRQ127) per reel
Description * 125C maximum total operating temperature * Dual winding inductors that can be used as either a single inductor, or in coupled inductor/transformer applications (1:1 turns ratio) * Four sizes of shielded drum core inductors * Windings can be connected in series or parallel, offering a broad range of inductance and current ratings
Parallel Ratings Isat(3) Amps Peak 14.4 7.97 6.52 5.52 4.22 3.78 3.12 2.66 2.47 2.05 1.67 1.35 1.14 0.96 0.89 0.79
Part Number
DRQ73-R33-R DRQ73-1R0-R DRQ73-1R5-R DRQ73-2R2-R DRQ73-3R3-R DRQ73-4R7-R DRQ73-6R8-R DRQ73-8R2-R DRQ73-100-R DRQ73-150-R DRQ73-220-R DRQ73-330-R DRQ73-470-R DRQ73-680-R DRQ73-820-R DRQ73-101-R
Rated Inductance (H) 0.33 1.00 1.50 2.20 3.30 4.70 6.80 8.20 10.0 15.0 22.0 33.0 47.0 68.0 82.0 100
OCL(1) +/-20% (H) 0.306 0.992 1.482 2.070 3.540 4.422 6.480 8.930 10.30 15.01 22.65 34.41 48.62 68.91 80.37 101.4
Irms(2) Amps 6.19 5.25 4.64 4.11 3.31 3.09 2.55 2.19 2.08 1.83 1.62 1.31 1.08 0.89 0.86 0.73
DCR (4) typ. 0.0074 0.0103 0.0132 0.0167 0.0259 0.0297 0.0435 0.0592 0.0656 0.0844 0.107 0.166 0.241 0.358 0.384 0.527
Volt(5) -Sec 1.98 3.56 4.36 5.15 6.73 7.52 9.11 10.7 11.5 13.9 17.0 21.0 24.9 29.7 32.1 36.0
OCL(1) +/-20% (H) 1.224 3.968 5.928 8.280 14.16 17.69 25.92 35.72 41.20 60.04 90.60 137.6 194.5 275.6 321.5 405.6
Irms(2) Amps 3.10 2.63 2.32 2.06 1.66 1.55 1.28 1.10 1.04 0.916 0.811 0.653 0.542 0.444 0.430 0.367
Series Ratings Isat(3) DCR (4) Amps typ. Peak 7.18 0.0296 3.99 0.0411 3.26 0.0527 2.76 0.0669 2.11 0.1035 1.89 0.1188 1.56 0.1742 1.33 0.2368 1.24 0.2623 1.03 0.339 0.83 0.429 0.68 0.665 0.57 0.965 0.48 1.43 0.44 1.54 0.39 2.11
Volt(5) -Sec 3.96 7.12 8.72 10.3 13.5 15.0 18.2 21.4 23.0 27.8 34.0 42.0 49.8 59.4 64.2 72.0
1) Open Circuit Inductance Test Parameters: 100kHz, 0.25 Vrms, 0.0 Adc Parallel: (1,2 -4,3) Series: (1-4) tie (2-3) 2) RMS current for an approximate T of 40C without core loss. It is recommended that the temperature of the part not exceed 125C. 3) Peak current for approximately 30% roll-off at 20C 4) DCR limits @ 20C 5) Applied Volt-Time product (V-S) across the inductor. This value represents the applied V-S at 100KHz necessary to generate a core loss equal to 10% of the total losses for a 40C temperature rise.
6) Turns Ratio (1:3):(2-4) 1:1 7) Part number definition: DRQxxx-yyy-R DRQxxx = product code and size, -yyy = inductance value in H, R = decimal point. If no R is present, third character = # of zeros -R suffix = RoHS compliant
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Part Number
DRQ73-151-R DRQ73-221-R DRQ73-331-R DRQ73-471-R DRQ73-681-R DRQ73-821-R DRQ73-102-R DRQ74-R33-R DRQ74-1R0-R DRQ74-1R5-R DRQ74-2R2-R DRQ74-3R3-R DRQ74-4R7-R DRQ74-6R8-R DRQ74-8R2-R DRQ74-100-R DRQ74-150-R DRQ74-220-R DRQ74-330-R DRQ74-470-R DRQ74-680-R DRQ74-820-R DRQ74-101-R DRQ74-151-R DRQ74-221-R DRQ74-331-R DRQ74-471-R DRQ74-681-R DRQ74-821-R DRQ74-102-R DRQ125-R47-R DRQ125-1R0-R DRQ125-1R5-R DRQ125-2R2-R DRQ125-3R3-R DRQ125-4R7-R DRQ125-6R8-R DRQ125-8R2-R DRQ125-100-R DRQ125-150-R DRQ125-220-R DRQ125-330-R DRQ125-470-R DRQ125-680-R
Rated Inductance (H) 150 220 330 470 680 820 1000 0.33 1.00 1.50 2.20 3.30 4.70 6.80 8.20 10.0 15.0 22.0 33.0 47.0 68.0 82.0 100 150 220 330 470 680 820 1000 0.47 1.00 1.50 2.20 3.30 4.70 6.80 8.20 10.0 15.0 22.0 33.0 47.0 68.0
OCL(1) +/-20% (H) 150.9 223.3 325.5 465.8 676.5 821.7 995.0 0.294 0.952 1.422 1.986 3.396 5.182 7.344 8.566 9.882 16.09 21.73 33.01 49.64 69.67 80.95 101.6 150.0 227.0 335.6 465.3 671.2 812.7 1009 0.456 0.894 1.478 2.208 3.084 5.274 6.588 8.048 9.654 15.35 22.36 33.74 47.47 67.91
Irms(2) Amps 0.58 0.52 0.42 0.35 0.29 0.27 0.26 6.20 5.33 4.96 4.66 3.94 3.34 2.60 2.53 2.41 2.11 1.75 1.41 1.15 1.03 0.91 0.86 0.69 0.56 0.45 0.40 0.33 0.31 0.27 17.6 15.0 13.8 10.9 9.26 7.18 6.64 5.54 5.35 4.27 3.70 3.28 2.71 2.22
Parallel Ratings Isat(3) Amps Peak 0.65 0.53 0.44 0.37 0.31 0.28 0.25 18.4 10.2 8.35 7.06 5.40 4.37 3.67 3.40 3.17 2.48 2.13 1.73 1.41 1.19 1.11 0.99 0.81 0.66 0.54 0.46 0.38 0.35 0.31 33.0 23.6 18.3 15.0 12.7 9.71 8.68 7.86 7.17 5.69 4.71 3.84 3.24 2.70
DCR (4) typ. 0.851 1.05 1.59 2.36 3.47 3.93 4.34 0.0074 0.0100 0.0115 0.0130 0.0183 0.0254 0.0418 0.0441 0.0489 0.0637 0.0925 0.143 0.216 0.265 0.345 0.383 0.591 0.907 1.41 1.74 2.58 2.93 3.89 0.0018 0.0024 0.0029 0.0045 0.0063 0.0105 0.0123 0.0176 0.0189 0.0298 0.0396 0.0505 0.0740 0.101
Volt(5) -Sec 44.0 53.5 64.5 77.2 93.1 103 113 1.71 3.08 3.76 4.45 5.81 7.18 8.55 9.23 9.92 12.7 14.7 18.1 22.2 26.3 28.4 31.8 38.6 47.5 57.8 68.1 81.7 89.9 100 3.17 4.43 5.70 6.97 8.23 10.8 12.0 13.3 14.6 18.4 22.2 27.2 32.3 38.6
OCL(1) +/-20% (H) 603.6 893.2 1302 1863 2706 3287 3980 1.176 3.808 5.688 7.944 13.58 20.73 29.38 34.26 39.53 64.36 86.92 132.0 198.6 278.7 323.8 406.4 600.0 908.0 1342 1861 2685 3251 4036 1.824 3.576 5.912 8.832 12.34 21.10 26.35 32.19 38.62 61.40 89.44 135.0 189.9 271.6
Irms(2) Amps 0.289 0.260 0.211 0.173 0.143 0.134 0.128 3.10 2.66 2.48 2.33 1.97 1.67 1.30 1.27 1.20 1.05 0.874 0.702 0.573 0.517 0.453 0.430 0.346 0.279 0.224 0.202 0.166 0.156 0.135 8.80 7.51 6.89 5.46 4.63 3.59 3.32 2.77 2.67 2.13 1.84 1.64 1.35 1.11
Series Ratings Isat(3) DCR (4) Amps typ. Peak 0.32 3.41 0.27 4.20 0.22 6.36 0.18 9.44 0.15 13.88 0.14 15.72 0.13 17.36 9.18 0.0295 5.10 0.0400 4.17 0.0461 3.53 0.0521 2.70 0.0732 2.19 0.102 1.84 0.167 1.70 0.177 1.58 0.196 1.24 0.255 1.07 0.371 0.87 0.574 0.71 0.865 0.60 1.06 0.55 1.38 0.49 1.53 0.41 2.37 0.33 3.63 0.27 5.66 0.23 6.97 0.19 10.3 0.17 11.7 0.16 15.6 16.5 0.0078 11.8 0.0096 9.15 0.0114 7.50 0.0182 6.35 0.0253 4.86 0.0420 4.34 0.0492 3.93 0.0705 3.59 0.0757 2.85 0.120 2.36 0.159 1.92 0.203 1.62 0.297 1.35 0.440
Volt(5) -Sec 88.0 107 129 154 186 206 226 3.42 6.16 7.52 8.9 11.6 14.4 17.1 18.5 19.8 25.4 29.4 36.2 44.4 52.6 56.8 63.6 77.2 95 116 136 163 180 200 6.34 8.86 11.40 13.9 16.5 21.6 24.0 26.6 29.2 36.8 44.4 54.4 64.6 77.2
1) Open Circuit Inductance Test Parameters: 100kHz, 0.25 Vrms, 0.0 Adc Parallel: (1,2 -4,3) Series: (1-4) tie (2-3) 2) RMS current for an approximate T of 40C without core loss. It is recommended that the temperature of the part not exceed 125C. 3) Peak current for approximately 30% roll-off at 20C 4) DCR limits @ 20C 5) Applied Volt-Time product (V-S) across the inductor. This value represents the applied V-S at 100KHz necessary to generate a core loss equal to 10% of the total losses for a 40C temperature rise.
6) Turns Ratio (1:3):(2-4) 1:1 7) Part number definition: DRQxxx-yyy-R DRQxxx = product code and size, -yyy = inductance value in H, R = decimal point. If no R is present, third character = # of zeros -R suffix = RoHS compliant
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Data Sheet 4311
Part Number
DRQ125-820-R DRQ125-101-R DRQ125-151-R DRQ125-221-R DRQ125-331-R DRQ125-471-R DRQ125-681-R DRQ125-821-R DRQ125-102-R DRQ127-R47-R DRQ127-1R0-R DRQ127-1R5-R DRQ127-2R2-R DRQ127-3R3-R DRQ127-4R7-R DRQ127-6R8-R DRQ127-8R2-R DRQ127-100-R DRQ127-150-R DRQ127-220-R DRQ127-330-R DRQ127-470-R DRQ127-680-R DRQ127-820-R DRQ127-101-R DRQ127-151-R DRQ127-221-R DRQ127-331-R DRQ127-471-R DRQ127-681-R DRQ127-821-R DRQ127-102-R
Rated Inductance (H) 82.0 100 150 220 330 470 680 820 1000 0.47 1.00 1.50 2.20 3.30 4.70 6.80 8.20 10.0 15.0 22.0 33.0 47.0 68.0 82.0 100 150 220 330 470 680 820 1000
OCL(1) +/-20% (H) 86.89 102.7 151.1 216.8 332.6 473.1 679.8 828.0 1008 0.419 0.821 1.357 2.027 2.831 4.841 7.387 8.861 10.47 14.09 22.93 33.92 47.05 66.48 79.75 99.31 144.9 221.5 323.6 467.1 676.7 818.1 1005
Irms(2) Amps 2.05 1.78 1.48 1.19 1.06 0.87 0.70 0.60 0.57 17.9 15.5 13.5 12.5 10.4 8.25 7.34 6.32 6.04 5.03 4.00 3.23 2.95 2.44 2.09 1.96 1.59 1.29 1.04 0.85 0.76 0.65 0.61
Parallel Ratings Isat(3) Amps Peak 2.39 2.20 1.81 1.51 1.22 1.02 0.85 0.77 0.70 56.0 40.0 31.1 25.5 21.5 16.5 13.3 12.2 11.2 9.66 7.57 6.22 5.28 4.44 4.06 3.64 3.01 2.43 2.01 1.68 1.39 1.27 1.14
DCR (4) typ. 0.128 0.170 0.248 0.384 0.482 0.718 1.10 1.49 1.69 0.00195 0.00261 0.00341 0.00373 0.00567 0.00917 0.0116 0.0157 0.0172 0.0247 0.0391 0.0600 0.0719 0.105 0.143 0.163 0.247 0.376 0.574 0.861 1.08 1.47 1.66
Volt(5) -Sec 43.7 47.5 57.6 69.0 85.5 102 122 135 149 3.50 4.90 6.30 7.70 9.10 11.9 14.7 16.1 17.5 20.3 25.9 31.5 37.1 44.1 48.3 53.9 65.1 80.5 97.3 117 141 155 172
OCL(1) +/-20% (H) 347.6 410.8 604.4 867.2 1330 1892 2719 3312 4032 1.676 3.284 5.428 8.108 11.32 19.36 29.55 35.44 41.88 56.36 91.72 135.7 188.2 265.9 319.0 397.2 579.6 886.0 1294 1868 2707 3272 4020
Irms(2) Amps 1.03 0.892 0.739 0.594 0.530 0.434 0.350 0.301 0.283 8.94 7.74 6.77 6.23 5.23 4.13 3.67 3.16 3.02 2.51 2.00 1.61 1.47 1.22 1.04 0.980 0.796 0.645 0.522 0.427 0.380 0.325 0.307
Series Ratings Isat(3) DCR (4) Amps typ. Peak 1.20 0.515 1.10 0.682 0.905 0.991 0.755 1.54 0.610 1.93 0.510 2.87 0.425 4.42 0.385 5.96 0.350 6.76 28 0.0078 20 0.0104 15.6 0.0137 12.7 0.0161 10.8 0.0229 8.24 0.0367 6.67 0.0465 6.09 0.0627 5.60 0.0686 4.83 0.0990 3.78 0.157 3.11 0.241 2.64 0.288 2.22 0.421 2.03 0.573 1.82 0.653 1.51 0.989 1.22 1.50 1.01 2.30 0.838 3.44 0.697 4.32 0.633 5.88 0.571 6.64
Volt(5) -Sec 87.4 95.0 115.2 138 171 204 244 270 298 7.00 9.80 12.60 15.4 18.2 23.8 29.4 32.2 35.0 40.6 51.8 63.0 74.2 88.2 96.6 107.8 130.2 161 195 234 282 310 344
1) Open Circuit Inductance Test Parameters: 100kHz, 0.25 Vrms, 0.0 Adc Parallel: (1,2 -4,3) Series: (1-4) tie (2-3) 2) RMS current for an approximate T of 40C without core loss. It is recommended that the temperature of the part not exceed 125C. 3) Peak current for approximately 30% roll-off at 20C 4) DCR limits @ 20C 5) Applied Volt-Time product (V-S) across the inductor. This value represents the applied V-S at 100KHz necessary to generate a core loss equal to 10% of the total losses for a 40C temperature rise.
6) Turns Ratio (1:3):(2-4) 1:1 7) Part number definition: DRQxxx-yyy-R DRQxxx = product code and size, -yyy = inductance value in H, R = decimal point. If no R is present, third character = # of zeros -R suffix = RoHS compliant
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Data Sheet 4311
Dimensions - mm DRQ73 Series
Side View Top View
*
Recommended Pad Layout
1.73 1.00 0.40 1.00 0.40
3.55 Max
DRQ73 ###
7.6 Max.
1.73 7.9 7.9
Dual Inductor Mode
Series Mode
Bottom View
6.1 0.73 0.60 7.6 Max. 0.80
3 1
Schematic
Dual Inductor
2 1
Series Mode
2 1
Parallel Mode
2
L1
L2
4 3
L1
L2
4 3
L1
L2
4
DRQ74 Series
Recommended Pad Layout Top View
* DRQ74 ###
7.6 Max
Side View
4.45 Max
1.73 1.00 0.40 1.00 0.40
1.73 7.9 7.9
Dual Inductor Mode
Series Mode
Bottom View Schematic
0.73
1
Dual Inductor
7.6 Max
2 1
Series Mode
2 1
Parallel Mode
2
0.60
L1
3
L2
4 3
L1
L2
4 3
L1
L2
4
6.1
Dimensions in millimeters.
### = Inductance value per family chart Dot indicates pin #1
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Data Sheet 4311
Dimensions - mm DRQ125 Series
Side View Top View
*
Recommended Pad Layout
3.85
1 4 3 1
6.00 Max
3.85
0.50
4 3
1 2
DRQ125 ### wwlly y R
4 3
2.50 12.5 Max
2
2.50
2
0.50 13.80
Dual Inductor Mode
13.80
Series Mode
Bottom View
2.05
Schematic
3 4
2.00 2
1
Dual Inductor
12.5 Max
1 2 1
Series Mode
2 1
Parallel Mode
2
L1
10.0
3
L2
4 3
L1
L2
4 3
L1
L2
4
DRQ127 Series
Side View Top View
*
Recommended Pad Layout
3.85
1
8.0 Max 2.50 12.5 Max
3.85
0.50
4 3
1 2
DRQ127 ### wwll yy R
4 3
2.50 0.50 13.80
Dual Inductor Mode
2
13.80
Series Mode
Bottom View
2.05
Schematic
3 4
2.00 2
1
Dual Inductor
12.5 Max
1 2 1
Series Mode
2 1
Parallel Mode
2
L1
10.0
3
L2
4 3
L1
L2
4 3
L1
L2
4
Dimensions in millimeters.
### = Inductance value per family chart wwllyy = (date code) R = revision level Dot indicates pin #1
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Data Sheet 4311
Packaging Information DRQ73 Series
Supplied in tape and reel packaging, 1350 parts per reel, 13" diameter reel.
ACTUAL SIZE DRQ73
Ao=7.90mm Bo=7.90mm Ko=3.80mm
Direction of Feed
(c)
DRQ74 Series
Supplied in tape and reel packaging, 1100 parts per reel, 13" diameter reel.
O1.50 +0.1/-0.0 2.00 0.1 0.1 4.00 O1.50 Min.
A
1.750.10
2
1
7.500.1
DRQ74 ###
Bo
16.00 0.3 0.3
ACTUAL SIZE DRQ74
3
4
Ko
A
Ao 12.00
Ao=7.90mm Bo=7.90mm Ko=4.70mm
Direction of Feed
(c)
SECTION A-A
DRQ125 Series
Supplied in tape and reel packaging, 600 parts per reel, 13" diameter reel.
4.0 1.5 dia +0.1/-0.0 2.0 1.5 dia min
A
1.7
2
1
11.5
*
B0
24.0 +/-0.3
DRQ125 ### wwllyy
3 4
ACTUAL SIZE DRQ125
Ao=13.00mm Bo=13.00mm Ko=6.30mm
K0 A0 16.00
A
Direction of Feed
(c)
SECTION A-A
DRQ127 Series
Supplied in tape and reel packaging, 350 parts per reel, 13" diameter reel.
1.5 dia +0.1/-0.0 2.0
4.0
1.5 dia min
A
1.7
R0.3 max.
2 1
11.5 24.0 +/-0.3
DRQ127 ### wwllyy
B0
ACTUAL SIZE DRQ127
Direction of Feed
3
4
Ao=13.00mm Bo=13.00mm Ko=8.30mm
Dimensions are in millimeters.
(c)
K0 A0 20.00
A
R0.5 TYP.
SECTION A-A
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Data Sheet 4311
Inductance Characteristics
OCL vs Isat DRQ73
100 90 80 70
80 100
OCL vs Isat DRQ74
OCL (%)
OCL (%)
0 20 40 60 80 100 120 140 160
60 50 40 30 20 10 0
60
40
20
0 0 20 40 60 80 100 120 140 160 180
% of Isat
% of Isat
OCL vs Isat DRQ125
100 90 80 70 100 90 80 70
OCL vs Isat DRQ127
OCL (%)
60 50 40 30 20 10 0 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150
OCL (%)
60 50 40 30 20 10 0 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150
% of Isat
% of Isat
Core Loss
% of Losses from Irms (maximum)
Irms DERATING WITH CORE LOSS
Hz
Hz
Hz
z
0K
30 0K
0K
KH
20
10
% of Applied Volt-Second
North America Cooper Bussmann 1225 Broken Sound Parkway NW Suite F Boca Raton, FL 33487-3533 Tel: 1-561-998-4100 Fax: 1-561-241-6640 Toll Free: 1-888-414-2645
Cooper Bussmann P.O. Box 14460 St. Louis, MO 63178-4460 Tel: 1-636-394-2877 Fax: 1-636-527-1607
Europe Cooper Bussmann Cooper (UK) Limited Burton-on-the-Wolds Leicestershire * LE12 5TH UK Tel: +44 (0) 1509 882 737 Fax: +44 (0) 1509 882 786
50
25
KH
z
Cooper Bussmann Avda. Santa Eulalia, 290 08223 Terrassa, (Barcelona), Spain Tel: +34 937 362 812 +34 937 362 813 Fax: +34 937 362 719
Asia Pacific Cooper Bussmann 1 Jalan Kilang Timor #06-01 Pacific Tech Centre Singapore 159303 Tel: +65 278 6151 Fax: +65 270 4160
This bulletin is intended to present product design solutions and technical information that will help the end user with design applications. Cooper Bussmann reserves the right, without notice, to change design or construction of any products and to discontinue or limit distribution of any products. Cooper Bussmann 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 Bussmann 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.
(c) 2007 Cooper Bussmann S t . L o u i s, M O 6 3 1 7 8 w w w. c o o p e r bu s s m a n n . c o m
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Data Sheet 4311

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