PM-59
SHIELDED DRUM (DR1040)
Description
125°C maximum total temperature operation
Low profile surface mount inductor
10.3mm x 10.5mm x 4.0mm shielded drum core
Ferrite core material
Inductance range from 1.5μH to 330μH
Current range from 10.0 Amps to 0.52 Amps
Frequency range up to 1MHz
Applications
Notebook power, Portable devices
Wireless modems, ADSL line cards
Point of load power supplies
Battery chargers, Video Cards
MP3 player, PDA’s, DVD players
LED driver for notebook computer
Navigation system, LCD backlighting
Buck, Boost, or Forward inductor
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, 850 per reel
DR1040 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)
DR1040-1R5-R 1.5 1.4 6.50 10.00 6.0 8.1 15.48
DR1040-2R5-R 2.5 2.4 6.10 7.80 7.0 9.0 12.04
DR1040-3R8-R 3.8 3.6 5.50 6.40 9.6 13.0 9.85
DR1040-5R2-R 5.2 5.2 5.40 5.50 14.0 17.0 8.33
DR1040-7R0-R 7.0 6.8 4.50 4.80 17.0 20.0 7.22
DR1040-8R2-R 8.2 8.1 3.98 4.60 24.0 29.0 6.37
DR1040-100-R 10 9.6 3.80 4.40 26.0 35.0 5.70
DR1040-150-R 15 14.9 3.10 3.60 37.0 50.0 4.71
DR1040-220-R 22 21.1 2.50 2.90 54.0 73.0 4.01
DR1040-330-R 33 32.6 2.20 2.45 69.0 93.0 3.28
DR1040-470-R 47 45.8 1.90 2.10 95.0 128 2.78
DR1040-680-R 68 65.3 1.42 1.65 152 183 2.30
DR1040-820-R 82 86.8 1.29 1.47 214 260 2.04
DR1040-101-R 100 101.4 1.25 1.35 225 304 1.90
DR1040-151-R 150 148.3 0.85 1.15 356 430 1.57
DR1040-221-R 220 216.2 0.70 0.92 530 640 1.27
DR1040-331-R 330 323.4 0.52 0.70 810 1090 1.03
(1) Open Circuit Inductance Test Parameters: 100kHz, 0.25V, 0.0Adc.
(2) Irms: DC current for an approximate ΔT of 30°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(P
eak to peak ripple current in Amps).
(5) Part Number Definition: DR1040-xxx-R
DR1040 = 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-60
SHIELDED DRUM (DR1040)
DR1040 Series
Low Profile Power Inductors
Core Loss
0. 001
0. 01
0. 1
1
10
1 10 100 1000
Bp-p (mT)
Core Loss (W)
100kHz
200kHz
300kHz
500kHz1MHz
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
2.0
A1=10.6 mm
Bo=11.0 mm
Ao=10.8 mm
1.5 dia
+0.1/-0.0
Bo
Ko
SECTION A-A
Ko=4.2 mm
B1=10.5 mm Parts packaged on 13" Diameter reel,
850 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.
wwlly R
XXX
10.5 max
TOP VIEW
1 2 10.3 max
SIDE VIEW
4.0 max
BOTTOM VIEW
7.7
+/- 0.3
1.2 +/- 0.15
(2 Pcs)
1
3.0
+/- 0.1
2
RECOMMENDED PCB LAYOUT
3.2
2plcs 10.5 Ref
1.6
2plcs
SCHEMATI C
2
1
Mechanical Diagrams
PM-61
SHIELDED DRUM (DR1040)
60.0%
%ofOCL
120.0%
100.0%
80.0%
40.0%
20.0%
0.0%
0.0% 20.0% 40.0% 60.0% 80.0% 100.0% 120.0% 140.0% 160.0%
% of Isat
OCL vs. Isat
-40 Deg.C
+25 Deg.C
+85 Deg.C
Inductance Characteristics
DR1040 Series
Low Profile Power Inductors
Temperature Rise vs. Loss
0
20
40
60
80
100
120
0 0.2 0.4 0.6 0.8 1 1.2
Total Loss (W)
TemperatureRise(°C)