Technical Data 4311
Effective April 2014
Supersedes December 2007
Coiltronics DRQ Series
Dual winding, shielded inductors/transformers
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 range (Component):
-40°C to +125°C
Operating temperature range: -40°C to +125°C
(ambient + self-temperature rise)
Solder reflow temperature: J-STD-020D
compliant
Product description
•
•
•
Packaging:
•
Lead free, RoHS compliant
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 to 56
amps
RMS current ratings from 0.128 to 17.9
amps
Inductance ratings from 0.33μH to
4.02mH
Surface mount
200Vac Isolation between windings
Ferrite core material
Supplied in tape and reel packaging (per reel):
- DRQ73 1350
- DRQ74 1100
- DRQ125 600
- DRQ127 350
•
•
Pb
•
•
•
•
•
•
The Coiltronics brand of
magnetics (formerly of
the Bussmann Division of
Cooper Industries)
is now part of
Eaton’s Electrical Group,
Electronics Division.
Coiltronics is now
part of Eaton
Same great
products plus
even more.
Technical Data 4311
Effective April 2014
DRQ Series Dual winding,
shielded inductors/transformers
Product specifications
Parallel Ratings
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
I
rms
Amps
2
Series Ratings
4
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
DRQ73-151-R
DRQ73-221-R
DRQ73-331-R
DRQ73-471-R
DRQ73-681-R
DRQ73-821-R
DRQ73-102-R
I
sat3
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
0.65
0.53
0.44
0.37
0.31
0.28
0.25
DCR
Ω
typ.
Volt
μ-Sec
5
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
I
Amps
2
rms
I
sat3
Amps
Peak
7.18
3.99
3.26
2.76
2.11
1.89
1.56
1.33
1.24
1.03
0.83
0.68
0.57
0.48
0.44
0.39
0.32
0.27
0.22
0.18
0.15
0.14
0.13
DCR
Ω
4
typ.
0.0296
0.0411
0.0527
0.0669
0.1035
0.1188
0.1742
0.2368
0.2623
0.339
0.429
0.665
0.965
1.43
1.54
2.11
3.41
4.20
6.36
9.44
13.88
15.72
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
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
0.58
0.52
0.42
0.35
0.29
0.27
0.26
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
0.851
1.05
1.59
2.36
3.47
3.93
4.34
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
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
0.289
0.260
0.211
0.173
0.143
0.134
0.128
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 DT 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
2
www.eaton.com/elx
DRQ Series Dual winding,
shielded inductors/transformers
Product specifications
Parallel Ratings
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)
0.294
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
I
rms
Amps
2
Technical Data 4311
Effective April 2014
Series Ratings
4
Part Number
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
I
sat3
Amps
Peak
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
DCR
Ω
Typ.
Volt
μ-Sec
5
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
I
rms
Amps
2
I
sat3
Amps
Peak
9.18
5.10
4.17
3.53
2.70
2.19
1.84
1.70
1.58
1.24
1.07
0.87
0.71
0.60
0.55
0.49
0.41
0.33
0.27
0.23
0.19
0.17
0.16
DCR
Ω
4
Typ.
0.0295
0.0400
0.0461
0.0521
0.0732
0.102
0.167
0.177
0.196
0.255
0.371
0.574
0.865
1.06
1.38
1.53
2.37
3.63
5.66
6.97
10.3
11.7
15.6
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
6.20
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
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
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
3.10
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
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 DT 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
www.eaton.com/elx
3
Technical Data 4311
Effective April 2014
DRQ Series Dual winding,
shielded inductors/transformers
Product specifications
Rated
Inductance
Part Number
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
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
(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
Parallel Ratings
OCL
1
±20%
(μH)
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
I
rms
Amps
2
Series Ratings
4
I
sat3
Amps
Peak
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
2.39
2.20
1.81
1.51
1.22
1.02
0.85
0.77
0.70
DCR
Ω
typ.
Volt
μ-Sec
5
OCL
1
±20%
(μH)
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
I
rms
Amps
2
I
sat3
Amps
Peak
16.5
11.8
9.15
7.50
6.35
4.86
4.34
3.93
3.59
2.85
2.36
1.92
1.62
1.35
1.20
1.10
0.905
0.755
0.610
0.510
0.425
0.385
0.350
DCR
Ω
4
typ.
0.0078
0.0096
0.0114
0.0182
0.0253
0.0420
0.0492
0.0705
0.0757
0.120
0.159
0.203
0.297
0.440
0.515
0.682
0.991
1.54
1.93
2.87
4.42
5.96
6.76
Volt
5
μ-Sec
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
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
2.05
1.78
1.48
1.19
1.06
0.87
0.70
0.60
0.57
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
0.128
0.170
0.248
0.384
0.482
0.718
1.10
1.49
1.69
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
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
1.03
0.892
0.739
0.594
0.530
0.434
0.350
0.301
0.283
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 DT 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
4
www.eaton.com/elx
DRQ Series Dual winding,
shielded inductors/transformers
Product specifications
Parallel Ratings
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
I
rms
Amps
2
Technical Data 4311
Effective April 2014
Series Ratings
4
Part Number
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
I
sat3
Amps
Peak
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
Ω
typ.
Volt
μ-Sec
5
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
I
Amps
2
rms
I
sat3
Amps
Peak
28
20
15.6
12.7
10.8
8.24
6.67
6.09
5.60
4.83
3.78
3.11
2.64
2.22
2.03
1.82
1.51
1.22
1.01
0.838
0.697
0.633
0.571
DCR
Ω
4
typ.
0.0078
0.0104
0.0137
0.0161
0.0229
0.0367
0.0465
0.0627
0.0686
0.0990
0.157
0.241
0.288
0.421
0.573
0.653
0.989
1.50
2.30
3.44
4.32
5.88
6.64
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
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
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
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
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
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 DT 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
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