DR1050 Series
Low Profile Power Inductors
Description
RoHS
2002/95/EC
• 125°C maximum total temperature operation
• Low profile surface mount inductor
• 10.3mm x 10.5mm x 5.0mm shielded drum core
• Ferrite core material
• Inductance range from 0.7μH to 1000μH
• Current range from 13.5 Amps to 0.43 Amps
• Frequency range up to 1MHz
Applications
• Computer, DVD players, and portable power devices
• Notebook power, LCD panels
• DC-DC converters
• Buck, boost, forward, and resonant converters
• Noise filtering and filter chokes
Environmental Data
• Storage temperature range: -40°C to +125°C
• Operating temperature range: -40°C to +125°C
(range is application specific)
• Solder reflow temperature: +260°C max. for 10 seconds
maximum
Part Number
Rated
Inductance
(μH)
0.8
1.5
2.2
3.3
4.7
6.8
8.2
10
12
15
18
22
27
33
39
47
56
68
82
100
120
150
180
220
270
330
390
470
560
680
820
1000
OCL (1)
μH±30%
0.70
1.37
2.27
3.21
4.43
6.30
8.09
10.1
11.6
14.8
17.5
23.5
26.9
34.3
38.3
47.1
56.7
67.2
84.4
97.5
118.3
149.2
183.7
221.8
263.5
320.6
396.5
480.5
572.6
707.9
818.7
1000.2
Irms(2)
Amperes
9.70
8.60
7.52
6.50
6.13
5.45
5.24
4.80
3.94
3.80
3.39
3.12
2.82
2.56
2.35
2.06
1.96
1.84
1.60
1.52
1.30
1.26
1.18
1.00
0.96
0.83
0.76
0.64
0.62
0.56
0.54
0.43
Packaging
• Supplied in tape and reel packaging, 500 per reel
Isat (3)
Amperes
13.50
10.50
9.25
8.20
6.70
5.80
5.00
4.58
4.10
3.70
3.30
3.00
2.80
2.50
2.35
2.10
1.94
1.70
1.58
1.45
1.30
1.15
1.08
0.98
0.90
0.80
0.72
0.62
0.60
0.55
0.50
0.48
DR1050-R80-R
DR1050-1R5-R
DR1050-2R2-R
DR1050-3R3-R
DR1050-4R7-R
DR1050-6R8-R
DR1050-8R2-R
DR1050-100-R
DR1050-120-R
DR1050-150-R
DR1050-180-R
DR1050-220-R
DR1050-270-R
DR1050-330-R
DR1050-390-R
DR1050-470-R
DR1050-560-R
DR1050-680-R
DR1050-820-R
DR1050-101-R
DR1050-121-R
DR1050-151-R
DR1050-181-R
DR1050-221-R
DR1050-271-R
DR1050-331-R
DR1050-391-R
DR1050-471-R
DR1050-561-R
DR1050-681-R
DR1050-821-R
DR1050-102-R
DCR (Ω)
mΩ @20°C
(Typical)
3.2
4.0
5.6
8.0
9.5
13.0
15.1
18.0
24.3
26.0
32.8
38.7
42.6
57.5
60.7
89.0
98.0
111
147
164
223
238
273
377
410
554
648
855
970
1095
1185
1528
DCR (Ω)
mΩ @20°C
(Maximum)
4.0
5.0
6.8
10.0
11.9
16.5
19.0
22.5
30.4
32.5
41.0
48.4
53.3
71.9
75.9
111
123
139
184
205
279
298
341
472
513
693
810
1069
1213
1369
1481
1950
K-factor
(4)
20.47
14.62
11.37
9.30
7.87
6.82
6.02
5.39
4.87
4.45
4.09
3.53
3.30
2.92
2.77
2.50
2.27
2.09
1.86
1.73
1.57
1.40
1.26
1.15
1.06
0.96
0.86
0.78
0.72
0.64
0.60
0.54
SHIELDED DRUM (DR1050)
(1) Open Circuit Inductance Test Parameters: 100kHz, 0.1V, 0.0Adc.
(2) Irms: DC current for an approximate
ΔT
of 40°C without core loss. Derating is
necessary for AC currents. PCB layout, trace thickness and width, air-flow, and
proximity of other heat generating components will affect the temperature rise. It
is recommended that the temperature of the part not exceed 125°C under worst
case operating conditions verified in the end application.
(3) Isat Amperes peak for approximately 35% rolloff (@25°C)
(4) K-factor: Used to determine B p-p for core loss (see graph).
B p-p = K*L*ΔI, B p-p(mT), K: (K factor from table), L: (Inductance in μH),
ΔI
(Peak to peak ripple current in Amps).
(5) Part Number Definition: DR1050-xxx-R
DR1050 = Product code and size; -xxx = Inductance value in uH;
R = decimal point; If no R is present, third character = # of zeros.
-R suffix = RoHS compliant
PM-62
DR1050 Series
Low Profile Power Inductors
Mechanical Diagrams
TOP VIEW
10.3 max.
BOTTOM VIEW
3.0
1.2
LEFT VIEW
7.3
FRONT VIEW
5.0 max.
RECO
MMENDED PCB LAYOUT
3.3
1.6
SCHEMATI C
1
1
XXX
wwlly R
2
10.5 max.
7.7
2
Dimensions are in millimeters.
xxx = Inductance value in uH. R = decimal point. If no R is present third character = # of zeros. wwllyy = Date code, R = Revision level.
Packaging Information
1.5 dia
+0.1/-0.0
2.0
4.0
1.5 dia
min
A
1.75
12.0
24.0
+/-0.3
Bo
B
1
XX X
wwlly R
Ko
A1
Ao
16.0
SECTION A-A
Ao=10.8 mm
Bo=11.0 mm
A1=10.5 mm
B1=10.7 mm
Ko=5.3 mm
A
SHIELDED DRUM (DR1050)
User direction of feed
Parts packaged on 13" Diameter reel,
500 parts per reel.
Core Loss
10
1MHz
1
500kHz300kHz
z
z
200kHz
z
100kHz
z
Core Loss (W)
0. 1
0. 01
0. 001
0. 0001
1
10
Bp-p (mT)
100
1000
PM-63
DR1050 Series
Low Profile Power Inductors
Temperature Rise vs. Loss
Temperature Rise vs. Total Loss
160.00
140.00
120.00
100.00
80.00
60.00
40.00
20.00
0.00
0.00
Temperature Rise (°C)
0.20
0.40
0.60
Total Loss (W)
0.80
1.00
1.20
Inductance Characteristics
120.0%
OCL vs. I
SAT
100.0%
SHIELDED DRUM (DR1050)
80.0%
% of OCL
60.0%
40.0%
20.0%
-40 Deg. C
+25 Deg. C
+85 Deg. C
0.0%
0%
20%
40%
60%
80%
100%
120%
140%
% of I
SAT
PM-64
