PM-62
SHIELDED DRUM (DR1050)
Description
• 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
Packaging
• Supplied in tape and reel packaging, 500 per reel
DR1050 Series
Low Profile Power Inductors
Part Number Rated OCL (1) Irms(2) Isat (3) DCR (Ω) DCR (Ω) K-factor
Inductance μH±30% Amperes Amperes mΩ@20°C mΩ@20°C (4)
(μH) (Typical) (Maximum)
DR1050-R80-R 0.8 0.70 9.70 13.50 3.2 4.0 20.47
DR1050-1R5-R 1.5 1.37 8.60 10.50 4.0 5.0 14.62
DR1050-2R2-R 2.2 2.27 7.52 9.25 5.6 6.8 11.37
DR1050-3R3-R 3.3 3.21 6.50 8.20 8.0 10.0 9.30
DR1050-4R7-R 4.7 4.43 6.13 6.70 9.5 11.9 7.87
DR1050-6R8-R 6.8 6.30 5.45 5.80 13.0 16.5 6.82
DR1050-8R2-R 8.2 8.09 5.24 5.00 15.1 19.0 6.02
DR1050-100-R 10 10.1 4.80 4.58 18.0 22.5 5.39
DR1050-120-R 12 11.6 3.94 4.10 24.3 30.4 4.87
DR1050-150-R 15 14.8 3.80 3.70 26.0 32.5 4.45
DR1050-180-R 18 17.5 3.39 3.30 32.8 41.0 4.09
DR1050-220-R 22 23.5 3.12 3.00 38.7 48.4 3.53
DR1050-270-R 27 26.9 2.82 2.80 42.6 53.3 3.30
DR1050-330-R 33 34.3 2.56 2.50 57.5 71.9 2.92
DR1050-390-R 39 38.3 2.35 2.35 60.7 75.9 2.77
DR1050-470-R 47 47.1 2.06 2.10 89.0 111 2.50
DR1050-560-R 56 56.7 1.96 1.94 98.0 123 2.27
DR1050-680-R 68 67.2 1.84 1.70 111 139 2.09
DR1050-820-R 82 84.4 1.60 1.58 147 184 1.86
DR1050-101-R 100 97.5 1.52 1.45 164 205 1.73
DR1050-121-R 120 118.3 1.30 1.30 223 279 1.57
DR1050-151-R 150 149.2 1.26 1.15 238 298 1.40
DR1050-181-R 180 183.7 1.18 1.08 273 341 1.26
DR1050-221-R 220 221.8 1.00 0.98 377 472 1.15
DR1050-271-R 270 263.5 0.96 0.90 410 513 1.06
DR1050-331-R 330 320.6 0.83 0.80 554 693 0.96
DR1050-391-R 390 396.5 0.76 0.72 648 810 0.86
DR1050-471-R 470 480.5 0.64 0.62 855 1069 0.78
DR1050-561-R 560 572.6 0.62 0.60 970 1213 0.72
DR1050-681-R 680 707.9 0.56 0.55 1095 1369 0.64
DR1050-821-R 820 818.7 0.54 0.50 1185 1481 0.60
DR1050-102-R 1000 1000.2 0.43 0.48 1528 1950 0.54
(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
RoHS
2002/95/EC
PM-63
SHIELDED DRUM (DR1050)
DR1050 Series
Low Profile Power Inductors
Core Loss
100kHz
200kHz
300kHz
500kHz
0. 0001
0. 001
0. 01
0. 1
1
10
1 10 100 1000
Core Loss (W)
Bp-p (mT)
z
z
z
z
1MH z
2.0
Ko=5.3 mm
B1=10.7 mm
A1=10.5 mm
Bo=11.0 mm
Ao=10.8 mm
1.5 dia
+0.1/-0.0
Bo
Ko
SECTION A-A
B1
wwlly R
XXX
A1
12.0
24.0
+/-0.3
1.5 dia
min
A
1.75
A
4.0
User direction of feed
Ao 16.0
Parts packaged on 13" Diameter reel,
500 parts per reel.
Packaging Information
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.
TOP VIEW FRONT VIEW
BOTTOM VIEW
LEFT VIEW
10.3 max.
10.5 max.
5.0 max.
3.0
7.7
XXX
wwlly R
1
2
RECOMMENDED PCB LAYOUT SCHEMATI C
1
2
3.3
7.3
1.6
1.2
Mechanical Diagrams
PM-64
SHIELDED DRUM (DR1050)
OCL vs. ISAT
0.0%
20.0%
40.0%
60.0%
80.0%
100.0%
120.0%
0% 20% 40% 60% 80% 100% 120% 140%
% of ISAT
%ofOCL
-40 Deg. C
+25 Deg. C
+85 Deg. C
Inductance Characteristics
DR1050 Series
Low Profile Power Inductors
Temperature Rise vs. Loss
Temperature Rise vs. Total Loss
0.00
20.00
40.00
60.00
80.00
100.00
120.00
140.00
160.00
0.00 0.20 0.40 0.60 0.80 1.00 1.20
Total Loss (W)
Temperature Rise (°C)