PL
IA
N
T
Features
■
Formerly
■
Height of 4.0 mm max.
■
Current rating up to 3.5 A
■
RoHS compliant*
Applications
model
■
Input/output of DC/DC converters
■
Power supplies for:
*R
oH
S
CO
M
• Portable communication equipment
• Camcorders
• LCD TVs
PM638S Series - Shielded SMD Power Inductor
Test
Frequency
(MHz)
7.96
7.96
7.96
7.96
7.96
7.96
2.52
2.52
2.52
2.52
2.52
2.52
2.52
2.52
2.52
2.52
2.52
2.52
0.796
SRF
Typ.
(MHz)
75.9
42.6
42.3
32.9
29.6
27.5
24.9
17.9
18.0
13.8
13.9
12.5
12.5
11.8
10.4
8.8
7.5
7.6
6.2
DCR
Max.
(mΩ)
20
24
27
31
34
34
38
53
57
92
96
109
124
138
155
202
234
324
358
Inductance 100 kHz
Bourns Part No.
PM638S-3R3-RC
PM638S-5R0-RC
PM638S-6R2-RC
PM638S-7R4-RC
PM638S-8R2-RC
PM638S-8R7-RC
PM638S-100-RC
PM638S-120-RC
PM638S-150-RC
PM638S-180-RC
PM638S-220-RC
PM638S-270-RC
PM638S-330-RC
PM638S-390-RC
PM638S-470-RC
PM638S-560-RC
PM638S-680-RC
PM638S-820-RC
PM638S-101-RC
(μH)
3.3
5.0
6.2
7.4
8.2
8.7
10
12
15
18
22
27
33
39
47
56
68
82
100
Tol. %
±30
±30
±30
±30
±30
±30
±30
±30
±30
±30
±30
±30
±30
±30
±30
±30
±30
±30
±30
Q
Ref.
9.8
8.9
9.0
7.5
7.4
7.3
8.8
8.3
8.6
8.0
8.8
7.7
8.6
8.3
8.5
8.2
7.4
7.6
6.7
Irms
(A)
3.50
2.90
2.50
2.30
2.20
2.20
2.00
1.70
1.60
1.50
1.30
1.20
1.10
1.00
0.95
0.85
0.75
0.70
0.65
Isat
(A)
3.60
2.95
2.60
2.55
2.45
2.35
2.05
1.95
1.90
1.70
1.60
1.30
1.20
1.10
1.00
0.90
0.87
0.75
0.68
Test Voltage .................... 0.1 V, 100 KHz
....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 ..................... 2
................. N/A
Materials
Core Material ................................Ferrite
Wire ...........................Enameled Copper
Adhesive .............................Epoxy Resin
Terminal ....................................Ag/Ni/Sn
Rated Current .......Ind. drop of 35 % typ.
at Isat
Temperature Rise ....... 30
˚C
typ. at Irms
Packaging .................. 1000 pcs. per reel
Product Dimensions
6.80 ± 0.20
(.268 ± .008)
100
275
<1> Maximum of 10 seconds between
+255°C and +260°C
260°C peak
<1> 255°C
6.80 ± 0.20
(.268 ± .008)
225
220°C
190°C
60 - 90
seconds
Ramp Down
6°C/second
maximum
Temperature (°C)
3.80 ± 0.20
(.150 ± .008)
2.30
(.091)
TYP.
175
150°C
125
120 - 150 seconds
10 seconds minimum
75
Ramp Up
3°C/second maximum
TYP.
2.20
(.087)
2.30
(.091)
TYP.
25
0
50
100
150
200
250
Rev. 02/22/05
300
Time (seconds)
Electrical Schematic
Recommended Layout
7.30
REF.
(.287)
2.60
(.102)
REF.
R
2.70
(.106)
REF.
REF.
2.10
(.083)
2.60
LCR METER
DIMENSIONS:
* 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
WARNING Cancer and Reproductive Harm -
www.P65Warnings.ca.gov
(.102)
MM
(INCHES)
REF.
PM638S Series - Shielded SMD Power Inductor
Inductance vs. Current
PM638S-3R3-RC
Inductance (μH)
PM638S-120-RC
3
14
12
10
8
6
4
2
0
0
0.5
Inductance (μH)
2
1
0
0
1
2
3
4
5
6
1
1.5
2
2.5
3
Current (A)
Inductance (μH)
PM638S-5R0-RC
5
4
3
2
1
0
0
1
2
3
4
Current (A)
PM638S-150-RC
Inductance (μH)
16
14
12
10
8
6
4
2
0
0
0.5
1
1.5
2
2.5
Current (A)
Current (A)
PM638S-6R2-RC
Inductance (μH)
PM638S-180-RC
Inductance (μH)
7
6
5
4
3
2
1
0
21
18
15
12
9
6
3
0
0
0
1
2
3
4
25
20
15
10
5
0
0
0
1
2
3
4
0.5
1
1.5
2
Current (A)
Current (A)
PM638S-220-RC
Inductance (μH)
8
6
4
2
0
PM638S-7R4-RC
Inductance (μH)
0.5
1
1.5
2
Current (A)
PM638S-270-RC
Current (A)
Inductance (μH)
Inductance (μH)
2.5
3
10
8
6
4
2
0
0
0.5
1
PM638S-8R7-RC
30
25
20
15
10
5
0
0
0.5
1.5
2
Current (A)
PM638S-100-RC
Inductance (μH)
40
30
20
10
0
1
1.5
2
Current (A)
PM638S-330-RC
Inductance (μH)
12
10
8
6
4
2
0
0
0.5
1
0
0.5
1
1.5
1.5
2
2.5
3
Current (A)
Current (A)
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.
PM638S Series - Shielded SMD Power Inductor
Inductance vs. Current
PM638S-390-RC
80
40
PM638S-680-RC
Inductance (μH)
Inductance (μH)
30
20
10
0
0
0.5
1
1.5
60
40
20
0
0
0.2
0.4
0.6
0.8
1
Current (A)
PM638S-470-RC
100
80
60
40
20
0
0
0.2
Current (A)
PM638S-820-RC
Inductance (μH)
60
50
40
30
20
10
0
0
Inductance (μH)
0.4
0.6
0.8
1
0.5
1
1.5
Current (A)
PM638S-101-RC
Current (A)
Inductance (μH)
PM638S-560-RC
120
100
80
60
40
20
0
0
0
0.2
0.4
0.6
0.8
1
0.2
Inductance (μH)
60
50
40
30
20
10
0
0.4
0.6
0.8
1
Current (A)
Current (A)
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.
PM638S Series - Shielded SMD Power Inductor
330.0
(12.99)
DIA.
2.0
±
0.5
(.079
±
.020)
22.4
(.882)
21.0
±
0.8
(.827
±
.032)
DIA.
13.0 ± 0.5
(.512 ± .020)
50.0 - 0
(1.969 - 0)
13.0 ± 0.5
DIA.
(.512 ± .020)
18.0 + 0
(.709 + 0)
END
12.0
(.472)
4.0
(.157)
START
100
100
100
100
NO COMPONENT
NO COMPONENT
COMPONENTS
200
(7.87)
400
(15.75)
USER DIRECTION OF FEED
DIMENSIONS:
QTY: 1000 PCS. PER REEL
MM
(INCHES)
Tel: +886-2 2562-4117 • Email: asiacus@bourns.com
EMEA:
Tel: +36 88 520 390 • Email: eurocus@bourns.com
The Americas:
Tel: +1-951 781-5500 • Email: americus@bourns.com
www.bourns.com
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
Unless otherwise expressly indicated in writing, Bourns
®
products and data sheets relating thereto are subject to change
and complete before placing orders for Bourns
®
products.
The characteristics and parameters of a Bourns
®
product set forth in its data sheet are based on laboratory conditions, and
statements regarding the suitability of products for certain types of applications are based on Bourns’ knowledge of typical
requirements in generic applications. The characteristics and parameters of a Bourns
®
®
product with other components
the actual performance of the Bourns
®
®
®
product as meeting the requirements of a particular industry
®
of Bourns products are responsible for ensuring compliance with safety-related requirements and standards applicable to
®
Bourns
®
on a case-by-case basis, use of any Bourns
®
®
®
®
®
Bourns
®
®
standard products that are suitable for use in aircraft
®
standard
the user’s sole risk.
®
and the user for which such Bourns
®
®
custom products shall be negotiated on a case-by-case basis by Bourns
®
also apply to such Bourns custom products.
Users shall not sell, transfer, export or re-export any Bourns
®
Bourns
®
standard products shall
products and Bourns technology and technical data may not under any circumstance be
exported or re-exported to countries subject to international sanctions or embargoes. Bourns
®
products may not, without
®
bilingual versions are available at:
Web Page:
http://www.bourns.com/legal/disclaimers-terms-and-policies
PDF:
http://www.bourns.com/docs/Legal/disclaimer.pdf
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