Technical Data 4315
Effective September 2017
Supersedes April 2014
DR
High power density, high efficiency, shielded drum core
power inductors
Applications
•
•
•
•
•
•
•
Desktop and servers
DVD and media players
Portable and handheld devices
LCD panels
DC-DC converters
Buck, boost, forward, and resonant converters
Noise filtering and filter chokes
Environmental data
•
Product features
•
•
•
•
•
•
Four sizes of shielded drum core inductors
Inductance range from 0.33 µH to 1000 µH
Current range up to 56 A peak
Magnetically shielded
Secure mounting
Ferrite core material
•
•
Storage temperature range (component):
-40 °C to +125 °C
Operating temperature range: -40 °C to +125 °C
(ambient plus self-temperature rise)
Solder reflow temperature:
J-STD-020 (latest revision) compliant
Pb HF
FREE
HALOGEN
Technical Data 4315
Effective September 2017
Product specifications
Rated
Inductance
(μH)
OCL1
±20%
(μH)
Irms2
(A)
Isat3
(A)
Peak
DCR4
(Ω)
Typ.
Volt-μsec5
Typ.
DR73-R33-R
0.33
0.306
6.21
14.4
0.0073
1.98
DR73-1R0-R
1.00
0.992
5.28
7.97
0.0102
3.56
DR73-1R5-R
1.50
1.482
4.67
6.52
0.0130
4.36
DR73-2R2-R
2.20
2.070
4.15
5.52
0.0165
5.15
DR73-3R3-R
3.30
3.540
3.31
4.22
0.0259
6.73
DR73-4R7-R
4.70
4.422
3.09
3.78
0.0297
7.52
DR73-6R8-R
6.80
6.480
2.55
3.12
0.0435
9.11
DR73-8R2-R
8.20
8.930
2.19
2.66
0.0592
10.7
DR73-100-R
10.0
10.30
2.08
2.47
0.0656
11.5
DR73-150-R
15.0
15.01
1.83
2.05
0.0844
13.9
DR73-220-R
22.0
22.65
1.62
1.67
0.107
17.0
DR73-330-R
33.0
34.41
1.31
1.35
0.166
21.0
DR73-470-R
47.0
48.62
1.08
1.14
0.241
24.9
DR73-680-R
68.0
68.91
0.89
0.96
0.358
29.7
DR73-820-R
82.0
80.37
0.86
0.89
0.384
32.1
DR73-101-R
100
101.4
0.73
0.79
0.527
36.0
DR73-151-R
150
150.9
0.58
0.65
0.851
44.0
Part Number
DR73-221-R
220
223.3
0.52
0.53
1.05
53.5
DR73-331-R
330
325.5
0.42
0.44
1.59
64.5
DR73-471-R
470
465.8
0.35
0.37
2.36
77.2
DR73-681-R
680
676.5
0.29
0.31
3.47
93.1
DR73-821-R
820
821.7
0.27
0.28
3.93
103
DR73-102-R
1000
995.0
0.26
0.25
4.34
113
1. Open Circuit Inductance Test Parameters: 100 kHz, 0.25 Vrms, 0.0 Adc.
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 approximate 30% roll off at +20 °C.
4. DCR limits @ +20 °C.
5. Applied Volt-Time product (V-μs) across the inductor. This value represent the
applied V-μsec 100 kHz necessary to generate a core loss equal to 10% of
the total losses for 40 °C temperature rise.
2
www.eaton.com/electronics
6. Part number definition: DRxxx-yyy-R
- DRxxx = 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
Technical Data 4315
DR
High power density, high efficiency, shielded drum core power inductors
Effective September 2017
Product specifications
Rated
Inductance
(μH)
OCL1
±20%
(μH)
Irms2
(A)
Isat3
(A)
Peak
DCR4
(Ω)
Typ.
Volt-μsec5
Typ.
DR74-R33-R
0.33
0.294
6.26
18.4
0.0074
1.71
DR74-1R0-R
1.00
0.952
5.39
10.2
0.0099
3.08
DR74-1R5-R
1.50
1.422
4.94
8.35
0.0118
3.76
DR74-2R2-R
2.20
1.986
4.76
7.06
0.0126
4.45
DR74-3R3-R
3.30
3.396
3.94
5.40
0.0183
5.81
DR74-4R7-R
4.70
5.182
3.34
4.37
0.0254
7.18
DR74-6R8-R
6.80
7.344
2.60
3.67
0.0418
8.55
DR74-8R2-R
8.20
8.566
2.53
3.40
0.0441
9.23
DR74-100-R
10.0
9.882
2.41
3.17
0.0489
9.92
DR74-150-R
15.0
16.09
2.11
2.48
0.0637
12.7
DR74-220-R
22.0
21.73
1.75
2.13
0.0925
14.7
DR74-330-R
33.0
33.01
1.41
1.73
0.143
18.1
DR74-470-R
47.0
49.64
1.15
1.41
0.216
22.2
DR74-680-R
68.0
69.67
1.03
1.19
0.265
26.3
DR74-820-R
82.0
80.95
0.91
1.11
0.345
28.4
DR74-101-R
100
101.6
0.86
0.99
0.383
31.8
DR74-151-R
150
150.0
0.69
0.81
0.591
38.6
DR74-221-R
220
227.0
0.56
0.66
0.907
47.5
DR74-331-R
330
335.6
0.45
0.54
1.41
57.8
DR74-471-R
470
465.3
0.40
0.46
1.74
68.1
Part Number
DR74-681-R
680
671.2
0.33
0.38
2.58
81.7
DR74-821-R
820
812.7
0.31
0.35
2.93
89.9
DR74-102-R
1000
1009
0.27
0.31
3.89
100
1. Open Circuit Inductance Test Parameters: 100 kHz, 0.25 Vrms, 0.0 Adc.
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 approximate 30% roll off at +20 °C.
4. DCR limits @ +20 °C.
5. Applied Volt-Time product (V-μs) across the inductor. This value represent the
applied V-μsec 100 kHz necessary to generate a core loss equal to 10% of
the total losses for 40 °C temperature rise.
6. Part number definition: DRxxx-yyy-R
- DRxxx = 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/electronics
3
DR
High power density, high efficiency, shielded drum core power inductors
Technical Data 4315
Effective September 2017
Product specifications
Part Number
Rated
Inductance
(μH)
OCL1
±20%
(μH)
Irms2
(A)
Isat3
(A)
Peak
DCR4
(Ω)
Typ.
Volt-μsec5
Typ.
DR125-R47-R
0.47
0.456
17.6
33.0
0.0018
3.17
DR125-1R0-R
1.00
0.894
15.0
23.6
0.0024
4.43
DR125-1R5-R
1.50
1.478
13.8
18.3
0.0029
5.70
DR125-2R2-R
2.20
2.208
10.9
15.0
0.0045
6.97
DR125-3R3-R
3.30
3.084
9.26
12.7
0.0063
8.23
DR125-4R7-R
4.70
5.274
7.18
9.71
0.0105
10.8
DR125-6R8-R
6.80
6.588
6.64
8.68
0.0123
12.0
DR125-8R2-R
8.20
8.048
5.54
7.86
0.0176
13.3
DR125-100-R
10.0
9.654
5.35
7.17
0.0189
14.6
DR125-150-R
15.0
15.35
4.27
5.69
0.0298
18.4
DR125-180-R
18.0
17.70
3.81
5.32
0.0377
19.6
DR125-220-R
22.0
22.36
3.70
4.71
0.0396
22.2
DR125-330-R
33.0
33.74
3.28
3.84
0.0505
27.2
DR125-470-R
47.0
47.47
2.71
3.24
0.0740
32.3
DR125-560-R
56.0
55.24
2.31
3.00
0.102
34.8
DR125-680-R
68.0
67.91
2.22
2.70
0.101
38.6
DR125-820-R
82.0
86.89
2.05
2.39
0.128
43.7
DR125-101-R
100
102.7
1.78
2.20
0.170
47.5
DR125-151-R
150
151.1
1.48
1.81
0.248
57.6
DR125-221-R
220
216.8
1.19
1.51
0.384
69.0
DR125-331-R
330
332.6
1.06
1.22
0.482
85.5
DR125-471-R
470
473.1
0.87
1.02
0.718
102
DR125-681-R
680
679.8
0.70
0.85
1.10
122
DR125-821-R
820
828.0
0.60
0.77
1.49
135
DR125-102-R
1000
1008
0.57
0.70
1.69
149
DR125-472-R
4700
4720
0.268
0.32
7.53
322.4
DR125-124-R
120000
120630
0.060
0.069
150
1521
1. Open Circuit Inductance Test Parameters: 100 kHz, 0.25 Vrms, 0.0 Adc.
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 approximate 30% roll off at +20 °C.
4. DCR limits @ +20 °C.
5. Applied Volt-Time product (V-μs) across the inductor. This value represent the
applied V-μsec 100 kHz necessary to generate a core loss equal to 10% of
the total losses for 40 °C temperature rise.
4
www.eaton.com/electronics
6. Part number definition: DRxxx-yyy-R
- DRxxx = 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
Technical Data 4315
DR
High power density, high efficiency, shielded drum core power inductors
Effective September 2017
Product specifications
Part Number
Rated
Inductance
(μH)
OCL1
±20%
(μH)
Irms2
(A)
Isat3
(A)
Peak
DCR4
(Ω)
Typ.
Volt-μsec5
Typ.
DR127-R47-R
0.47
0.419
17.9
56.0
0.00195
3.50
DR127-1R0-R
1.00
0.821
15.5
40.0
0.00313
4.90
DR127-1R5-R
1.50
1.357
13.5
31.1
0.00341
6.30
DR127-2R2-R
2.20
2.027
12.5
25.5
0.00402
7.70
DR127-3R3-R
3.30
2.831
10.5
21.5
0.00567
9.10
DR127-4R7-R
4.70
4.841
8.25
16.5
0.00917
11.9
DR127-6R8-R
6.80
7.387
7.34
13.3
0.0116
14.7
DR127-8R2-R
8.20
8.861
6.32
12.2
0.0157
16.1
DR127-100-R
10.0
10.47
6.04
11.2
0.0172
17.5
DR127-150-R
15.0
14.09
5.03
9.66
0.0247
20.3
DR127-220-R
22.0
22.93
4.00
7.57
0.0391
25.9
DR127-330-R
33.0
33.92
3.23
6.22
0.0600
31.5
DR127-470-R
47.0
47.05
2.95
5.28
0.0719
37.1
DR127-680-R
68.0
66.48
2.44
4.44
0.105
44.1
DR127-820-R
82.0
79.75
2.09
4.06
0.143
48.3
DR127-101-R
100
99.31
1.96
3.64
0.163
53.9
DR127-151-R
150
144.9
1.59
3.01
0.247
65.1
DR127-221-R
220
221.5
1.29
2.43
0.376
80.5
DR127-331-R
330
323.6
1.04
2.01
0.574
97.3
DR127-471-R
470
467.1
0.85
1.68
0.861
117
DR127-681-R
680
676.7
0.76
1.39
1.08
141
DR127-821-R
820
818.1
0.65
1.27
1.47
155
DR127-102-R
1000
1005
0.61
1.14
1.66
172
1. Open Circuit Inductance Test Parameters: 100 kHz, 0.25 Vrms, 0.0 Adc.
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 approximate 30% roll off at +20 °C.
4. DCR limits @ +20 °C.
5. Applied Volt-Time product (V-μs) across the inductor. This value represent the
applied V-μsec 100 kHz necessary to generate a core loss equal to 10% of
the total losses for 40 °C temperature rise.
6. Part number definition: DRxxx-yyy-R
- DRxxx = 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/electronics
5
DR
High power density, high efficiency, shielded drum core power inductors
Technical Data 4315
Effective September 2017
Dimensions - mm
DR73
BOTTOM VIEW
FRONT VIEW
TOP VIEW
RECOMMENDED PAD LAYOUT
SCHEMATIC
6.0
7.6
Max
2.0
1
2.50
7.6 Max
3.55
Max
DR73
###
wllyy R
3.25
2
8.50
1.13
DR74
FRONT VIEW
BOTTOM VIEW
TOP VIEW
RECOMMENDED PAD LAYOUT
7.6
Max
7.6
Max
2.0
1
2.50
4.35
Max
DR74
###
wllyy R
SCHEMATIC
3.25
2
1.13
8.50
DR125
FRONT VIEW
BOTTOM VIEW
RECOMMENDED PAD LAYOUT
TOP VIEW
SCHEMATIC
2.05
Typ.
13.80
1
4.90 2
Typ
1
12.50
Max
6.00
Max
1
DR125-###
wwllyy R
2
5.50
2
12.50
Max
3.85
10
DR127
RECOMMENDED PAD LAYOUT
TOP VIEW
FRONT VIEW
BOTTOM VIEW
2.05
Typ.
SCHEMATIC
13.80
4.90 2
Typ
1
12.50
Max
10
8.00
Max
1
12.50
Max
DR127-###
wwllyy R
1
5.50
2
3.85
2
### = Inductance value per family chart
wllyy and wwllyy = (date code) R = revision level
6
www.eaton.com/electronics
Technical Data 4315
DR
High power density, high efficiency, shielded drum core power inductors
Effective September 2017
Packaging information - mm
DR73
Supplied in tape and reel packaging,
1350 parts per reel, 13" diameter reel.
Ø1.50 +0.1/-0.0
12.00
2.00 ±0.1
Ø1.50 Min.
A
4.00
1.75±0.10
1
7.50±0.1
DR73
###
wllyy R
Bo
±0.3
ACTUAL SIZE
DR73
2
Ao=7.90mm
Bo=7.90mm
Ko=3.80mm
A
Ao
Ko
User direction of feed
SECTION A-A
DR74
Supplied in tape and reel packaging,
1100 parts per reel, 13" diameter reel.
Ø1.50 +0.1/-0.0
12.00
2.00 ±0.1
Ø1.50 Min.
A
4.00
1.75±0.10
1
7.50±0.1
DR74
###
wllyy R
Bo
Ao=7.90mm
Bo=7.90mm
Ko=4.70mm
±0.3
ACTUAL SIZE
DR74
2
A
Ao
Ko
SECTION A-A
User direction of feed
DR125
4.0
Supplied in tape and reel packaging,
600 parts per reel,13" diameter reel
+0.1/-0.0
2.0
1
min
A
1.7
1
11.5
DR125-###
wwllyy R
B0
Ao=13.0mm
Bo=13.0mm
Ko=6.30mm
+/-0.3
ACTUAL SIZE
DR125
2
A0
A
16.00
K0
SECTION A-A
User direction of feed
DR127
4.0
Supplied in tape and reel packaging,
350 parts per reel, 13" diameter reel.
+0.1/-0.0
2.0
A
min
1.7
1
11.5
Ao=13.0mm
Bo=13.0mm
Ko=8.30mm
DR127-###
wwllyy R
B0
+/-0.3
ACTUAL SIZE
DR127
2
A0
K0
SECTION A-A
20.00
A
User direction of feed
www.eaton.com/electronics
7
DR
High power density, high efficiency, shielded drum core power inductors
Technical Data 4315
Effective September 2017
Inductance characteristics
OCL vs I sat DR74
OCL vs I sat DR73
100
100
90
80
80
60
60
OCL (%)
OCL (%)
70
50
40
40
30
20
20
10
0
0
20
40
60
80
100
120
140
0
160
% of I sat
0
20
40
60
OCL vs I sat DR125
140
160
180
90
80
80
70
70
60
60
OCL (%)
OCL (%)
120
100
90
50
40
50
40
30
30
20
20
10
10
0
10
20
30
40
50
60
70
80
90
% of I sat
100
110
120
130
140
0
150
0
Core loss
Irms Derating with Core Loss
0
10
30
50
70
z
25
kH
kH
z
50
Hz
0k
10
0k
Hz
30
0k
Hz
80
20
% of Losses from Irms (max)
60
90
92
94
95
96
97
98
99
10
20
30
40
60
80
100
200
% of Applied Volt-µsecond
8
100
OCL vs I sat DR127
100
0
80
% of I sat
www.eaton.com/electronics
300
400
600
800
1000
10
20
30
40
50
60
70
80
% Isat
90
100
110
120
130
140
150
Technical Data 4315
DR
High power density, high efficiency, shielded drum core power inductors
Effective September 2017
Solder Reflow Profile
TP
TC -5°C
Temperature
TL
25°C
Preheat
A
T smax
Table 1 - Standard SnPb Solder (Tc)
tP
Max. Ramp Up Rate = 3°C/s
Max. Ramp Down Rate = 6°C/s
t
Volume
mm3
220°C
220°C
Table 2 - Lead (Pb) Free Solder (T c)
Tsmin
Package
Thickness
2.5mm
ts
Time 25°C to Peak
Volume
mm3
2000
260°C
245°C
245°C
Time
Reference JDEC J-STD-020
Profile Feature
Preheat and Soak
• Temperature min. (Tsmin)
• Temperature max. (Tsmax)
• Time (Tsmin to Tsmax) (ts)
Average ramp up rate Tsmax to Tp
Liquidous temperature (TL)
Time at liquidous (tL)
Peak package body temperature (TP)*
Time (tp)** within 5 °C of the specified classification temperature (Tc)
Average ramp-down rate (Tp to Tsmax)
Time 25°C to Peak Temperature
Standard SnPb Solder
100°C
Lead (Pb) Free Solder
150°C
150°C
200°C
60-120 Seconds
60-120 Seconds
3°C/ Second Max.
3°C/ Second Max.
183°C
60-150 Seconds
217°C
60-150 Seconds
Table 1
Table 2
20 Seconds**
30 Seconds**
6°C/ Second Max.
6°C/ Second Max.
6 Minutes Max.
8 Minutes Max.
* Tolerance for peak profile temperature (Tp) is defined as a supplier minimum and a user maximum.
** Tolerance for time at peak profile temperature (tp) is defined as a supplier minimum and a user maximum.
Life Support Policy: Eaton 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.
Eaton reserves the right, without notice, to change design or construction of any products and to discontinue or limit distribution of any products. Eaton also
reserves the right to change or update, without notice, any technical information contained in this bulletin.
Eaton
Electronics Division
1000 Eaton Boulevard
Cleveland, OH 44122
United States
www.eaton.com/electronics
© 2017 Eaton
All Rights Reserved Printed in USA
Publication No. 4315 BU-SB14112
September 2017
Eaton is a registered trademark.
All other trademarks are property
of their respective owners.