®
DRQ Series
Dual Winding, Shielded
Inductors/Transformer
Description
• 125C maximum total temperature operation
• 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
• 200 VAC Isolation between windings
• RoHS compliant (-R option)
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).
• IR reflow temperature: 240°C for 30 seconds max.
Part Number
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
150
220
330
470
680
820
1000
OCL (1)
+/-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
150.9
223.3
325.5
465.8
676.5
821.7
995.0
Parallel Ratings
I rms (2)
I sat (3) DCR
Ω
(4)
Amperes
Amperes
typ.
Peak
6.19
14.4
0.0074
5.25
7.97
0.0103
4.64
6.52
0.0132
4.11
5.52
0.0167
3.31
4.22
0.0259
3.09
3.78
0.0297
2.55
3.12
0.0435
2.19
2.66
0.0592
2.08
2.47
0.0656
1.83
2.05
0.0844
1.62
1.67
0.107
1.31
1.35
0.166
1.08
1.14
0.241
0.89
0.96
0.358
0.86
0.89
0.384
0.73
0.79
0.527
0.58
0.65
0.851
0.52
0.53
1.05
0.42
0.44
1.59
0.35
0.37
2.36
0.29
0.31
3.47
0.27
0.28
3.93
0.26
0.25
4.34
Packaging
• Supplied in tape and reel packaging, 1350 (DRQ73),
1100 (DRQ74), 600 (DRQ125), and 350 (DRQ127)
per reel
Volt (5)
µ-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
44.0
53.5
64.5
77.2
93.1
103
113
DRQ73-R33
DRQ73-1R0
DRQ73-1R5
DRQ73-2R2
DRQ73-3R3
DRQ73-4R7
DRQ73-6R8
DRQ73-8R2
DRQ73-100
DRQ73-150
DRQ73-220
DRQ73-330
DRQ73-470
DRQ73-680
DRQ73-820
DRQ73-101
DRQ73-151
DRQ73-221
DRQ73-331
DRQ73-471
DRQ73-681
DRQ73-821
DRQ73-102
OCL (1)
+/-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
603.6
893.2
1302
1863
2706
3287
3980
Series Ratings
I rms (2)
I sat (3)
DCR
Ω
(4)
Amperes
Amperes
typ.
Peak
3.10
7.18
0.0296
2.63
3.99
0.0411
2.32
3.26
0.0527
2.06
2.76
0.0669
1.66
2.11
0.1035
1.55
1.89
0.1188
1.28
1.56
0.1742
1.10
1.33
0.2368
1.04
1.24
0.2623
0.916
1.03
0.339
0.811
0.83
0.429
0.653
0.68
0.665
0.542
0.57
0.965
0.444
0.48
1.43
0.430
0.44
1.54
0.367
0.39
2.11
0.289
0.32
3.41
0.260
0.27
4.20
0.211
0.22
6.36
0.173
0.18
9.44
0.143
0.15
13.88
0.134
0.14
15.72
0.128
0.13
17.36
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
88.0
107
129
154
186
206
226
1) Open Circuit Inductance Test Parameters: 100kHz, 0.25 Vrms, 0.0 Adc
Parallel: (1,2 - 4,2) 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 (1-2):(3-4) 1:1
®
DRQ Series
Dual Winding, Shielded
Inductors/Transformer
Parallel Ratings
I rms (2)
I sat (3) DCR
Ω
(4)
Amperes
Amperes
typ.
Peak
6.20
18.4
0.0074
5.33
10.2
0.0100
4.96
8.35
0.0115
4.66
7.06
0.0130
3.94
5.40
0.0183
3.34
4.37
0.0254
2.60
3.67
0.0418
2.53
3.40
0.0441
2.41
3.17
0.0489
2.11
2.48
0.0637
1.75
2.13
0.0925
1.41
1.73
0.143
1.15
1.41
0.216
1.03
1.19
0.265
0.91
1.11
0.345
0.86
0.99
0.383
0.69
0.81
0.591
0.56
0.66
0.907
0.45
0.54
1.41
0.40
0.46
1.74
0.33
0.38
2.58
0.31
0.35
2.93
0.27
0.31
3.89
17.6
33.0
0.0018
15.0
23.6
0.0024
13.8
18.3
0.0029
10.9
15.0
0.0045
9.26
12.7
0.0063
7.18
9.71
0.0105
6.64
8.68
0.0123
5.54
7.86
0.0176
5.35
7.17
0.0189
4.27
5.69
0.0298
3.70
4.71
0.0396
3.28
3.84
0.0505
2.71
3.24
0.0740
2.22
2.70
0.101
2.05
2.39
0.128
1.78
2.20
0.170
1.48
1.81
0.248
1.19
1.51
0.384
1.06
1.22
0.482
0.87
1.02
0.718
0.70
0.85
1.10
0.60
0.77
1.49
0.57
0.70
1.69
Series Ratings
I rms (2)
I sat (3)
DCR
Ω
(4)
Amperes
Amperes
typ.
Peak
3.10
9.18
0.0295
2.66
5.10
0.0400
2.48
4.17
0.0461
2.33
3.53
0.0521
1.97
2.70
0.0732
1.67
2.19
0.102
1.30
1.84
0.167
1.27
1.70
0.177
1.20
1.58
0.196
1.05
1.24
0.255
0.874
1.07
0.371
0.702
0.87
0.574
0.573
0.71
0.865
0.517
0.60
1.06
0.453
0.55
1.38
0.430
0.49
1.53
0.346
0.41
2.37
0.279
0.33
3.63
0.224
0.27
5.66
0.202
0.23
6.97
0.166
0.19
10.3
0.156
0.17
11.7
0.135
0.16
15.6
8.80
16.5
0.0078
7.51
11.8
0.096
6.89
9.15
0.0114
5.46
7.50
0.0182
4.63
6.35
0.0253
3.59
4.86
0.0420
3.32
4.34
0.0492
2.77
3.93
0.0705
2.67
3.59
0.0757
2.13
2.85
0.120
1.84
2.36
0.159
1.64
1.92
0.203
1.35
1.62
0.297
1.11
1.35
0.440
1.03
1.20
0.515
0.892
1.10
0.682
0.739
0.905
0.991
0.594
0.755
1.54
0.530
0.610
1.93
0.434
0.510
2.87
0.350
0.425
4.42
0.301
0.385
5.96
0.283
0.350
6.76
Part Number
DRQ74-R33
DRQ74-1R0
DRQ74-1R5
DRQ74-2R2
DRQ74-3R3
DRQ74-4R7
DRQ74-6R8
DRQ74-8R2
DRQ74-100
DRQ74-150
DRQ74-220
DRQ74-330
DRQ74-470
DRQ74-680
DRQ74-820
DRQ74-101
DRQ74-151
DRQ74-221
DRQ74-331
DRQ74-471
DRQ74-681
DRQ74-821
DRQ74-102
DRQ125-R47
DRQ125-1R0
DRQ125-1R5
DRQ125-2R2
DRQ125-3R3
DRQ125-4R7
DRQ125-6R8
DRQ125-8R2
DRQ125-100
DRQ125-150
DRQ125-220
DRQ125-330
DRQ125-470
DRQ125-680
DRQ125-820
DRQ125-101
DRQ125-151
DRQ125-221
DRQ125-331
DRQ125-471
DRQ125-681
DRQ125-821
DRQ125-102
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
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)
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
86.89
102.7
151.1
216.8
332.6
473.1
679.8
828.0
1008
Volt (5)
µ-Sec
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
43.7
47.5
57.6
69.0
85.5
102
122
135
149
OCL (1)
+/-20%
(µH)
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
347.6
410.8
604.4
867.2
1330
1892
2719
3312
4032
Volt (5)
µ-Sec
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
87.4
95.0
115.2
138
171
204
244
270
298
1) Open Circuit Inductance Test Parameters: 100kHz, 0.25 Vrms, 0.0 Adc
Parallel: (1,2 - 4,2) 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 (1-2):(3-4) 1:1
®
DRQ Series
Dual Winding, Shielded
Inductors/Transformer
Parallel Ratings
I rms (2)
I sat (3) DCR
Ω
(4)
Amperes
Amperes
typ.
Peak
17.9
56.0
0.00195
15.5
40.0
0.00261
13.5
31.1
0.00341
12.5
25.5
0.00373
10.4
21.5
0.00567
8.25
16.5
0.00917
7.34
13.3
0.0116
6.32
12.2
0.0157
6.04
11.2
0.0172
5.03
9.66
0.0247
4.00
7.57
0.0391
3.23
6.22
0.0600
2.95
5.28
0.0719
2.44
4.44
0.105
2.09
4.06
0.143
1.96
3.64
0.163
1.59
3.01
0.247
1.29
2.43
0.376
1.04
2.01
0.574
0.85
1.68
0.861
0.76
1.39
1.08
0.65
1.27
1.47
0.61
1.14
1.66
Series Ratings
I rms (2)
I sat (3)
DCR
Ω
(4)
Amperes
Amperes
typ.
Peak
8.94
28
0.0078
7.74
20
0.0104
6.77
15.6
0.0137
6.23
12.7
0.0161
5.23
10.8
0.0229
4.13
8.24
0.0367
3.67
6.67
0.0465
3.16
6.09
0.0627
3.02
5.60
0.0686
2.51
4.83
0.0990
2.00
3.78
0.157
1.61
3.11
0.241
1.47
2.64
0.288
1.22
2.22
0.421
1.04
2.03
0.573
0.980
1.82
0.653
0.796
1.51
0.989
0.645
1.22
1.50
0.522
1.01
2.30
0.427
0.838
3.44
0.380
0.697
4.32
0.325
0.633
5.88
0.307
0.571
6.64
Part Number
DRQ127-R47
DRQ127-1R0
DRQ127-1R5
DRQ127-2R2
DRQ127-3R3
DRQ127-4R7
DRQ127-6R8
DRQ127-8R2
DRQ127-100
DRQ127-150
DRQ127-220
DRQ127-330
DRQ127-470
DRQ127-680
DRQ127-820
DRQ127-101
DRQ127-151
DRQ127-221
DRQ127-331
DRQ127-471
DRQ127-681
DRQ127-821
DRQ127-102
Rated
Inductance
(µH)
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)
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
Volt (5)
µ-Sec
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)
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
Volt (5)
µ-Sec
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 - 4,2) 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 (1-2):(3-4) 1:1
Option Code
-R
OPTION CODE
Description
RoHS compliant version
®
DRQ Series
Dual Winding, Shielded
Inductors/Transformer
Mechanical Diagrams
DRQ73 Series
BOTTOM VIEW
6.1
0.73
0.60
7.6
Max.
0.80
FRONT VIEW
TOP VIEW
1.00
RECOMMENDED PCB LAYOUT
1.73
0.40
1.00
0.40
7.6
Max.
•
DRQ73
###
1.73
7.9
7.9
3.55 Max
Dual Inductor Mode
SCHEMATIC
Dual Inductor
1
2
1
Series Mode
Series Mode
2
1
Parallel Mode
2
L1
3
L2
4
3
L1
L2
4
3
L1
L2
4
DRQ74 Series
BOTTOM VIEW
FRONT VIEW
0.73
TOP VIEW
1.00
RECOMMENDED PCB LAYOUT
1.73
0.40
1.00
0.40
0.60
7.6
Max
7.6
Max
•
DRQ74
###
1.73
7.9
7.9
6.1
4.45
Max
Dual Inductor Mode
SCHEMATIC
Dual Inductor
1
2
1
Series Mode
Series Mode
2
1
Parallel Mode
2
L1
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
®
DRQ Series
Dual Winding, Shielded
Inductors/Transformer
Mechanical Diagrams
DRQ125 Series
BOTTOM VIEW
2.05
FRONT VIEW
TOP VIEW
RECOMMENDED PCB LAYOUT
3.85
2.00
2
1
3
4
•
3.85
4
3
1
0.50
4
3
12.5
Max
12.5
Max
1
2
DRQ125
###
wwlly y
4
3
1
2.50
2
2.50
2
0.50
10.0
6.00 Max
13.80
Dual Inductor Mode
13.80
Series Mode
SCHEMATIC
Dual Inductor
1
2
1
Series Mode
2
1
Parallel Mode
2
L1
3
L2
4
3
L1
L2
4
3
L1
L2
4
DRQ127 Series
BOTTOM VIEW
2.05
FRONT VIEW
TOP VIEW
RECOMMENDED PCB LAYOUT
3.85
2.00
2
1
3
4
3.85
1
0.50
4
3
12.5
Max
12.5
Max
•
1
2
DRQ127
###
wwll yy
4
2.50
3
2.50
0.50
2
10.0
8.0
Max
13.80
Dual Inductor Mode
13.80
Series Mode
SCHEMATIC
Dual Inductor
1
2
1
Series Mode
2
1
Parallel Mode
2
L1
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
