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 0.33µH 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
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
Parallel Ratings
Irms
Isat
(3)
Amps
Amps
Peak
6.19
14.4
5.25
7.97
4.64
6.52
4.11
5.52
3.31
4.22
3.09
3.78
2.55
3.12
2.19
2.66
2.08
2.47
1.83
2.05
1.67
1.62
1.31
1.35
1.08
1.14
0.89
0.96
0.86
0.89
0.73
0.79
(2)
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
(µH)
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
+/-20%
(µH)
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
(1)
DCR
Ω
typ.
(4)
Volt
µ-Sec
(5)
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
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
+/-20%
(µH)
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
(1)
Irms
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
(2)
Series Ratings
Isat
(3)
DCR
Ω
(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)
µ-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 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
1207
BU-SB07326
Page 1 of 7
Data Sheet 4311
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
(µH)
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
+/-20%
(µH)
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
(1)
Parallel Ratings
Irms
Isat
(3)
Amps
Amps
Peak
0.58
0.65
0.52
0.53
0.42
0.44
0.35
0.37
0.29
0.31
0.27
0.28
0.26
0.25
6.20
18.4
5.33
10.2
4.96
8.35
4.66
7.06
3.94
5.40
3.34
4.37
2.60
3.67
2.53
3.40
2.41
3.17
2.11
2.48
1.75
2.13
1.41
1.73
1.15
1.41
1.03
1.19
0.91
1.11
0.86
0.99
0.69
0.81
0.56
0.66
0.45
0.54
0.40
0.46
0.33
0.38
0.31
0.35
0.27
0.31
17.6
33.0
15.0
23.6
18.3
13.8
10.9
15.0
9.26
12.7
7.18
9.71
6.64
8.68
5.54
7.86
5.35
7.17
4.27
5.69
3.70
4.71
3.28
3.84
2.71
3.24
2.22
2.70
(2)
DCR
Ω
typ.
(4)
Volt
µ-Sec
(5)
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
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
+/-20%
(µH)
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
(1)
Irms
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
(2)
Series Ratings
Isat
(3)
DCR
Ω
(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)
µ-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 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
1207
BU-SB07326
Page 2 of 7
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
(µH)
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%
(µH)
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
Parallel Ratings
Irms
(2)
Isat
(3)
Amps
Amps
Peak
2.05
2.39
1.78
2.20
1.48
1.81
1.19
1.51
1.06
1.22
0.87
1.02
0.70
0.85
0.60
0.77
0.57
0.70
17.9
56.0
15.5
40.0
13.5
31.1
12.5
25.5
10.4
21.5
8.25
16.5
7.34
13.3
6.32
12.2
6.04
11.2
5.03
9.66
4.00
7.57
3.23
6.22
2.95
5.28
2.44
4.44
2.09
4.06
1.96
3.64
1.59
3.01
1.29
2.43
1.04
2.01
0.85
1.68
0.76
1.39
0.65
1.27
0.61
1.14
DCR
Ω
(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)
µ-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%
(µH)
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
Ω
(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)
µ-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 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
1207
BU-SB07326
Page 3 of 7
Data Sheet 4311
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