DRQ Series
Dual Winding, Shielded Inductors/Transformer
1207 BU-SB07326 Page 1 of 7 Data Sheet 4311
Description
• 125°C 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
• Peak current ratings from 0.13 amps to 56 amps
• RMS current ratings from 0.128 amps to 17.9 amps
• Inductance ratings from 0.33µH 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: -40°C to +125°C
• Operating temperature: -40°C to +125°C (range is application
specific).
• Solder reflow temperature: 260°C max. for 10 seconds max.
Packaging
• Supplied in tape and reel packaging, 1350 (DRQ73),
1100 (DRQ74), 600 (DRQ125), and 350 (DRQ127) per reel
Parallel Ratings Series Ratings
Part Number Rated OCL
(1)
I
rms
(2)
I
sat
(3)
DCR
Ω
Ω
(4)
Volt
(5)
OCL
(1)
I
rms
(2)
I
sat
(3)
DCR
Ω
Ω
(4)
Volt
(5)
Inductance
+/-20% Amps Amps typ. µ-Sec +/-20% Amps Amps typ. µ-Sec
(µH) (µH) Peak (µH) Peak
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
1) Open Circuit Inductance Test Parameters: 100kHz, 0.25 V
r
ms
, 0.0 Adc
Parallel: (1,2 -4,3) Series: (1-4) tie (2-3)
2) RMS current for an approximate
∆T of 40°C without core loss. It is recommended that the
temperature of the part not exceed 125°C.
3) Peak current for approximately 30% roll-off at 20°C
4) DCR limits @ 20°C
5) Applied Volt-Time product (V-µS) across the inductor. This value represents the applied V-µS
at 100KHz necessary to gener
ate a cor
e loss equal to 10% of the total losses for a 40
°
C
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 µH,
R = decimal point. If no R is present, third character = # of zeros
-R suffix = RoHS compliant
1207 BU-SB07326 Page 2 of 7 Data Sheet 4311
Parallel Ratings Series Ratings
Part Number Rated OCL
(1)
I
rms
(2)
I
sat
(3)
DCR
Ω
Ω
(4)
Volt
(5)
OCL
(1)
I
rms
(2)
I
sat
(3)
DCR
Ω
Ω
(4)
Volt
(5)
Inductance +/-20% Amps Amps typ. µ-Sec +/-20% Amps Amps typ. µ-Sec
(µH) (µH) Peak (µH) Peak
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
DRQ74-R33-R 0.33 0.294 6.20 18.4 0.0074 1.71 1.176 3.10 9.18 0.0295 3.42
DRQ74-1R0-R 1.00 0.952 5.33 10.2 0.0100 3.08 3.808 2.66 5.10 0.0400 6.16
D
RQ74-1R5-R
1
.50 1.422 4.96 8.35 0.0115 3.76 5.688 2.48 4.17 0.0461 7.52
DRQ74-2R2-R 2.20 1.986 4.66 7.06 0.0130 4.45 7.944 2.33 3.53 0.0521 8.9
DRQ74-3R3-R 3.30 3.396 3.94 5.40 0.0183 5.81 13.58 1.97 2.70 0.0732 11.6
DRQ74-4R7-R 4.70 5.182 3.34 4.37 0.0254 7.18 20.73 1.67 2.19 0.102 14.4
DRQ74-6R8-R 6.80 7.344 2.60 3.67 0.0418 8.55 29.38 1.30 1.84 0.167 17.1
DRQ74-8R2-R 8.20 8.566 2.53 3.40 0.0441 9.23 34.26 1.27 1.70 0.177 18.5
DRQ74-100-R 10.0 9.882 2.41 3.17 0.0489 9.92 39.53 1.20 1.58 0.196 19.8
DRQ74-150-R 15.0 16.09 2.11 2.48 0.0637 12.7 64.36 1.05 1.24 0.255 25.4
DRQ74-220-R 22.0 21.73 1.75 2.13 0.0925 14.7 86.92 0.874 1.07 0.371 29.4
DRQ74-330-R 33.0 33.01 1.41 1.73 0.143 18.1 132.0 0.702 0.87 0.574 36.2
DRQ74-470-R 47.0 49.64 1.15 1.41 0.216 22.2 198.6 0.573 0.71 0.865 44.4
DRQ74-680-R 68.0 69.67 1.03 1.19 0.265 26.3 278.7 0.517 0.60 1.06 52.6
DRQ74-820-R 82.0 80.95 0.91 1.11 0.345 28.4 323.8 0.453 0.55 1.38 56.8
DRQ74-101-R 100 101.6 0.86 0.99 0.383 31.8 406.4 0.430 0.49 1.53 63.6
DRQ74-151-R 150 150.0 0.69 0.81 0.591 38.6 600.0 0.346 0.41 2.37 77.2
DRQ74-221-R 220 227.0
0.56 0.66 0.907 47.5 908.0 0.279 0.33 3.63 95
DRQ74-331-R 330 335.6 0.45 0.54 1.41
57.8 1342 0.224 0.27 5.66 116
DRQ74-471-R 470 465.3 0.40 0.46 1.74 68.1 1861 0.202 0.23 6.97 136
DRQ74-681-R 680 671.2 0.33 0.38 2.58 81.7 2685 0.166 0.19 10.3 163
DRQ74-821-R 820 812.7 0.31 0.35 2.93 89.9 3251 0.156 0.17 11.7 180
DRQ74-102-R 1000 1009 0.27 0.31 3.89 100 4036 0.135 0.16 15.6 200
DRQ125-R47-R 0.47 0.456 17.6 33.0 0.0018 3.17 1.824 8.80 16.5 0.0078 6.34
DRQ125-1R0-R 1.00 0.894 15.0 23.6 0.0024 4.43 3.576 7.51 11.8 0.0096 8.86
DRQ125-1R5-R 1.50
1.478
13.8
18.3 0.0029 5.70 5.912 6.89 9.15 0.0114 11.40
DRQ125-2R2-R 2.20 2.208 10.9 15.0 0.0045 6.97 8.832 5.46 7.50 0.0182 13.9
DRQ125-3R3-R 3.30 3.084 9.26 12.7 0.0063 8.23 12.34 4.63 6.35 0.0253 16.5
DRQ125-4R7-R 4.70 5.274 7.18 9.71 0.0105 10.8 21.10 3.59 4.86 0.0420 21.6
DRQ125-6R8-R 6.80
6.588 6.64 8.68 0.0123 12.0 26.35 3.32 4.34 0.0492 24.0
DRQ125-8R2-R 8.20 8.048 5.54 7.86 0.0176 13.3 32.19 2.77 3.93 0.0705 26.6
DRQ125-100-R 10.0 9.654 5.35 7.17 0.0189 14.6 38.62 2.67 3.59 0.0757 29.2
DRQ125-150-R 15.0 15.35 4.27 5.69 0.0298 18.4 61.40 2.13 2.85 0.120 36.8
DRQ125-220-R 22.0 22.36 3.70 4.71 0.0396 22.2 89.44 1.84 2.36 0.159 44.4
DRQ125-330-R 33.0 33.74 3.28 3.84 0.0505 27.2 135.0 1.64 1.92 0.203 54.4
DRQ125-470-R 47.0 47.47 2.71 3.24 0.0740 32.3 189.9 1.35 1.62 0.297 64.6
DRQ125-680-R 68.0 67.91 2.22 2.70 0.101 38.6 271.6 1.11 1.35 0.440 77.2
1) Open Circuit Inductance Test Parameters: 100kHz, 0.25 V
rms
, 0.0 Adc
Parallel: (1,2 -4,3) Series: (1-4) tie (2-3)
2) RMS current for an approximate
∆T of 40°C without core loss. It is recommended that the
temperature of the part not exceed 125
°C.
3) Peak current for approximately 30% roll-off at 20°C
4) DCR limits @ 20°C
5) Applied Volt-Time product (V-µS) across the inductor. This value represents the applied V-µS
at 100KHz necessary to generate a core loss equal to 10% of the total losses for a 40°C
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 v
alue in
µ
H,
R = decimal point. If no R is present, third character = # of zeros
-R suffix = RoHS compliant
1207 BU-SB07326 Page 3 of 7 Data Sheet 4311
Parallel Ratings Series Ratings
Part Number Rated OCL
(1)
I
rms
(2)
I
sat
(3)
DCR
Ω
Ω
(4)
Volt
(5)
OCL
(1)
I
rms
(2)
I
sat
(3)
DCR
Ω
Ω
(4)
Volt
(5)
Inductance +/-20% Amps Amps typ. µ-Sec +/-20% Amps Amps typ. µ-Sec
(µH) (µH) Peak (µH) Peak
DRQ125-820-R 82.0 86.89 2.05 2.39 0.128 43.7 347.6 1.03 1.20 0.515 87.4
DRQ125-101-R 100 102.7 1.78 2.20 0.170 47.5 410.8 0.892 1.10 0.682 95.0
DRQ125-151-R 150 151.1 1.48 1.81 0.248 57.6 604.4 0.739 0.905 0.991 115.2
DRQ125-221-R 220 216.8 1.19 1.51 0.384 69.0 867.2 0.594 0.755 1.54 138
DRQ125-331-R 330 332.6 1.06 1.22 0.482 85.5 1330 0.530 0.610 1.93 171
DRQ125-471-R 470 473.1 0.87 1.02 0.718 102 1892 0.434 0.510 2.87 204
DRQ125-681-R 680 679.8 0.70 0.85 1.10 122 2719 0.350 0.425 4.42 244
DRQ125-821-R 820 828.0 0.60 0.77 1.49 135 3312 0.301 0.385 5.96 270
DRQ125-102-R 1000 1008 0.57 0.70 1.69 149 4032 0.283 0.350 6.76 298
DRQ127-R47-R 0.47 0.419 17.9 56.0 0.00195 3.50 1.676 8.94 28 0.0078 7.00
DRQ127-1R0-R 1.00 0.821 15.5 40.0 0.00261 4.90 3.284 7.74 20 0.0104 9.80
DRQ127-1R5-R 1.50 1.357 13.5 31.1 0.00341 6.30 5.428 6.77 15.6 0.0137 12.60
DRQ127-2R2-R 2.20 2.027 12.5 25.5 0.00373 7.70 8.108 6.23 12.7 0.0161 15.4
DRQ127-3R3-R 3.30 2.831 10.4 21.5 0.00567 9.10 11.32 5.23 10.8 0.0229 18.2
DRQ127-4R7-R 4.70 4.841 8.25 16.5 0.00917 11.9 19.36 4.13 8.24 0.0367 23.8
DRQ127-6R8-R 6.80 7.387 7.34 13.3 0.0116 14.7 29.55 3.67 6.67 0.0465 29.4
DRQ127-8R2-R 8.20 8.861 6.32 12.2 0.0157 16.1 35.44 3.16 6.09 0.0627 32.2
DRQ127-100-R 10.0 10.47 6.04 11.2 0.0172 17.5 41.88 3.02 5.60 0.0686 35.0
DRQ127-150-R 15.0 14.09 5.03 9.66 0.0247 20.3 56.36 2.51 4.83 0.0990 40.6
DRQ127-220-R 22.0 22.93 4.00 7.57 0.0391 25.9 91.72 2.00 3.78 0.157 51.8
DRQ127-330-R 33.0 33.92 3.23 6.22
0.0600 31.5 135.7 1.61 3.11 0.241 63.0
DRQ127-470-R 47.0 47.05 2.95 5.28 0.0719 37.1 188.2 1.47 2.64 0.288 74.2
DRQ127-680-R 68.0 66.48 2.44 4.44 0.105 44.1 265.9 1.22 2.22 0.421 88.2
DRQ127-820-R 82.0 79.75 2.09 4.06 0.143 48.3 319.0 1.04 2.03 0.573 96.6
DRQ127-101-R 100 99.31 1.96 3.64 0.163 53.9 397.2
0.980
1.82 0.653 107.8
DRQ127-151-R 150 144.9
1.59 3.01 0.247 65.1 579.6 0.796 1.51 0.989 130.2
DRQ127-221-R 220 221.5 1.29 2.43 0.376 80.5 886.0 0.645 1.22 1.50 161
DRQ127-331-R 330 323.6 1.04 2.01 0.574 97.3 1294 0.522 1.01 2.30 195
DRQ127-471-R 470 467.1 0.85 1.68 0.861 117 1868 0.427 0.838 3.44 234
DRQ127-681-R 680 676.7 0.76 1.39 1.08
141
2707 0.380 0.697 4.32 282
DRQ127-821-R 820 818.1 0.65 1.27 1.47 155 3272 0.325 0.633 5.88 310
DRQ127-102-R 1000 1005 0.61 1.14 1.66 172 4020 0.307 0.571 6.64 344
1) Open Circuit Inductance Test Parameters: 100kHz, 0.25 V
rms
, 0.0 Adc
Parallel: (1,2 -4,3) Series: (1-4) tie (2-3)
2) RMS current for an approximate
∆T of 40°C without core loss. It is recommended that the
temperature of the part not exceed 125°C.
3) Peak current for approximately 30% roll-off at 20°C
4) DCR limits @ 20°C
5) Applied Volt-Time product (V-µS) across the inductor. This value represents the applied V-µS
at 100KHz necessary to generate a core loss equal to 10% of the total losses for a 40°C
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 µH,
R = decimal point. If no R is present, third character = # of zeros
-R suffix = RoHS compliant
