DR1040-3R8-R COILTRONICS, DR1040-3R8-R Datasheet
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DR1040-3R8-R
Manufacturer Part Number
DR1040-3R8-R
Description
INDUCTOR POWER, 3.8UH, 5.5A, SMD
Manufacturer
COILTRONICS
Datasheet
1.DR1040-100-R.pdf
(3 pages)
Specifications of DR1040-3R8-R
Dc Resistance Max
0.013ohm
Dc Current Rating
5.5A
Core Material
Ferrite
Inductor Case Style
SMD
No. Of Pins
2
Lead Spacing
7.7mm
Inductance
3.8µH
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
DR1040-3R8-R
Manufacturer:
COOPER
Quantity:
20 000
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
• Solder reflow temperature: +260°C max. for 10 seconds
(1) Open Circuit Inductance Test Parameters: 100kHz, 0.25V, 0.0Adc.
(2) Irms: DC current for an approximate ∆T of 30°C without core loss. Derating is
(3) Isat Amperes peak for approximately 35% rolloff (@25°C)
Part Number
DR1040-1R5-R
DR1040-2R5-R
DR1040-3R8-R
DR1040-5R2-R
DR1040-7R0-R
DR1040-8R2-R
DR1040-100-R
DR1040-150-R
DR1040-220-R
DR1040-330-R
DR1040-470-R
DR1040-680-R
DR1040-820-R
DR1040-101-R
DR1040-151-R
DR1040-221-R
DR1040-331-R
(range is application specific)
maximum
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.
Inductance
Rated
(µH)
100
150
220
330
1.5
2.5
3.8
5.2
7.0
8.2
10
15
22
33
47
68
82
µH±30%
OCL (1)
101.4
148.3
216.2
323.4
14.9
21.1
32.6
45.8
65.3
86.8
1.4
2.4
3.6
5.2
6.8
8.1
9.6
Amperes
Irms(2)
6.50
6.10
5.50
5.40
4.50
3.98
3.80
3.10
2.50
2.20
1.90
1.42
1.29
1.25
0.85
0.70
0.52
2002/95/EC
RoHS
(4) K-factor: Used to determine B p-p for core loss (see graph).
(5) Part Number Definition: DR1040-xxx-R
Packaging
• Supplied in tape and reel packaging, 850 per reel
Amperes
Isat (3)
B p-p = K*L*∆I, B p-p(mT), K: (K factor from table), L: (Inductance in µH),
∆I (Peak to peak ripple current in Amps).
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
10.00
7.80
6.40
5.50
4.80
4.60
4.40
3.60
2.90
2.45
2.10
1.65
1.47
1.35
1.15
0.92
0.70
mΩ @20°C
(Typical)
DCR (Ω)
14.0
17.0
24.0
26.0
37.0
54.0
69.0
95.0
Low Profile Power Inductors
152
214
225
356
530
810
6.0
7.0
9.6
mΩ @20°C
(Maximum)
DCR (Ω)
1090
13.0
17.0
20.0
29.0
35.0
50.0
73.0
93.0
128
183
260
304
430
640
8.1
9.0
DR1040 Series
K-factor
15.48
12.04
9.85
8.33
7.22
6.37
5.70
4.71
4.01
3.28
2.78
2.30
2.04
1.90
1.57
1.27
1.03
(4)
Related parts for DR1040-3R8-R
DR1040-3R8-R Summary of contents
Page 1
... 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 OCL (1) Inductance µH±30% (µH) DR1040-1R5-R 1.5 DR1040-2R5-R 2.5 DR1040-3R8-R 3.8 DR1040-5R2-R 5.2 DR1040-7R0-R 7.0 DR1040-8R2-R 8.2 DR1040-100-R 10 DR1040-150-R 15 DR1040-220-R 22 ...
Page 2
... B 1 XXX wwlly R A1 16.0 Ao User direction of feed 10 Bp-p (mT) DR1040 Series Low Profile Power Inductors RECOMMENDED PC B LAYOUT 1.6 2 plcs 3.2 10.5 Ref 2 plcs A min 1.75 12.0 24.0 +/-0.3 A Parts packaged on 13" Diameter reel, 850 parts per reel ...
Page 3
... Total Loss (W) OCL vs. Isat 40.0% 60.0% 80.0% 100. Isat DR1040 Series Low Profile Power Inductors 0.8 1 1.2 120.0% 140.0% 160.0% ...