T
PL
IA
N
M
CO
*R
oH
S
Features
Applications
■ Height of 2.0 mm
■ Input/output of DC/DC converters
■ Current rating up to 2.7 A
■ Power supplies for:
• Portable communication equipment
• Camcorders
• LCD TVs
■ RoHS compliant*
SRR4018 Series - Shielded SMD Power Inductors
Electrical Characteristics
Inductance
100 kHz
Bourns
Part Number
(μH)
SRR4018-1R0Y
SRR4018-1R8Y
SRR4018-2R2Y
SRR4018-2R7Y
SRR4018-3R3Y
SRR4018-3R9Y
SRR4018-4R7Y
SRR4018-5R6Y
SRR4018-6R8Y
SRR4018-8R2Y
SRR4018-100Y
SRR4018-120Y
SRR4018-150Y
SRR4018-180Y
SRR4018-220Y
SRR4018-270Y
SRR4018-330Y
SRR4018-390Y
SRR4018-470Y
SRR4018-560Y
SRR4018-680Y
SRR4018-820Y
SRR4018-101Y
SRR4018-121Y
SRR4018-151Y
SRR4018-181Y
1.0
1.8
2.2
2.7
3.3
3.9
4.7
5.6
6.8
8.2
10
12
15
18
22
27
33
39
47
56
68
82
100
120
150
180
Tol. %
Q
Ref.
Test
Frequency
(MHz)
SRF
Typ.
(MHz)
DCR
Max.
(mΩ)
I rms
(A)
I sat
(A)
±30
±30
±30
±30
±30
±30
±30
±30
±30
±30
±30
±30
±30
±30
±30
±30
±30
±30
±30
±30
±30
±30
±30
±30
±30
±30
9
9
8
8
8
8
8
7
8
7
10
9
8
7
7
7
7
8
8
8
7
8
10
11
14
10
7.960
7.960
7.960
7.960
7.960
7.960
7.960
7.960
7.960
7.960
2.520
2.520
2.520
2.520
2.520
2.520
2.520
2.520
2.520
2.520
2.520
2.520
0.796
0.796
0.796
0.796
219
105
90
78
61
60
55
57
49
40
38
32
30
30
29
23
21
19
20
15
13
13
12
10
10
10
35
58
55
60
65
75
82
90
100
135
150
170
220
280
300
370
420
540
600
820
860
1200
1350
1950
2600
4000
2.70
2.35
2.10
2.03
1.95
1.82
1.72
1.64
1.50
1.40
1.30
1.15
1.03
0.92
0.88
0.77
0.73
0.64
0.62
0.52
0.50
0.43
0.40
0.33
0.28
0.18
2.60
2.20
2.10
1.95
1.80
1.65
1.50
1.25
1.15
1.10
1.00
0.90
0.82
0.75
0.65
0.60
0.50
0.48
0.45
0.40
0.38
0.32
0.30
0.28
0.26
0.25
General Specifications
Test Voltage ................................... 0.1 V
Reflow Soldering ...230 °C, 50 sec. max.
Operating Temp. ............-40 °C to +125 °C
(Temperature rise included)
Storage Temperature.. -40 °C to +125 °C
Resistance to Soldering Heat
................................ 260 °C for 10 sec.
Moisture Sensitivity Level......................1
ESD Classification (HBM) ..................N/A
Materials
Core ............................................. Ferrite
Wire ........................... Enameled copper
Adhesive ...............................Epoxy resin
Terminal .................................... Ag/Ni/Sn
Rated Current
................... Ind. drop 35 % typ. at Isat
Temperature Rise ................... 30 °C typ.
at rated Irms
Packaging.................... 800 pcs. per reel
Product Dimensions
4.80 ± 0.20
(.189 ± .008)
6R8
4.80 ± 0.20
(.189 ± .008)
1.80 ± 0.20
(.071 ± .008)
Inductance vs. Current
1.60
(.063)
TYP.
102
101
7
5
3
TYP.
1.60
(.063)
330
Inductance (μH)
2
101
7
DIMENSIONS:
100
5
MM
(INCHES)
1.60
(.063)
TYP.
Recommended Layout
4R7
3
5.30
REF.
(.209)
2
2.00
(.079)
REF.
100
1R0
7
R
5
101
2
3
5
7 102
2
3
5
DC Current (mA)
WARNING Cancer and Reproductive Harm
www.P65Warnings.ca.gov
7 103
2
3
5
7
104
1.80
(.071)
REF.
REF.
1.50
(.059)
2.00
(.079)
REF.
*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
Specifications are subject to change without notice. Users should verify actual device performance in their specific
applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the
last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
SRR4018 Series - Shielded SMD Power Inductors
Soldering Profile
Electrical Schematic
275
Maximum of 10 seconds between
+255°C and +260°C
260°C peak
255°C
225
220°C
Temperature (°C)
190°C
Ramp Down
6°C/second
maximum
60 - 90
seconds
175
150°C
125
120 - 150 seconds
10 seconds minimum
75
Ramp Up
3°C/second maximum
LCR METER
25
0
50
100
150
200
250
Time (seconds)
2.0 ± 0.5
(.079 ± .020)
178.0
(7.00)
DIA.
300
Rev. 02/22/05
16.5
(.650)
DIA.
13.0
(.511)
21.0 ± 0.8
(.827 ± .032)
50.0 - 0
(1.969 - 0)
13.0
DIA.
(.511)
14.0 + 0
(.551 + 0)
8.0
(.315)
END
6R8
4.0
(.157)
6R8
6R8
NO COMPONENT
200
(7.87)
START
6R8
NO COMPONENT
COMPONENTS
400
(15.75)
USER DIRECTION OF FEED
QTY: 800 PCS. PER REEL
DIMENSIONS:
MM
(INCHES)
REV. 03/18
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
Legal Disclaimer Notice
This legal disclaimer applies to purchasers and users of Bourns® products manufactured by or on behalf of Bourns, Inc. and
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Unless otherwise expressly indicated in writing, Bourns® products and data sheets relating thereto are subject to change
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