Features
■ Semi-shielded construction
■ Inductance range: 0.47 to 10 µH
■ Rated current up to 1.45 A
■ AEC-Q200 qualified
■ Low profile: 0.8 mm max.
■ RoHS compliant* and halogen free**
SRN2508A Series - Semi-shielded Power Inductors
* RoHS Directive 2015/863, Mar 31, 2015 and Annex.
Operating Temperature
................................. -55 °C to +125 °C
(Temperature rise included)
Storage Temperature (Component)
................................. -55 °C to +125 °C
Temperature Rise .....40 °C at rated Irms
Rated Current
............ Inductance drops 30 % at Isat
Moisture Sensitivity Level .....................1
................. N/A
Bourns Part No.
Inductance
@ 1 MHz / 0.1 V Q
@ 1 MHz
Typ.
SRF
(MHz)
Typ.
DCR
(Ω)
±20 %
Irms
(A)
Typ.
Isat
(A)
Typ.L (μH) Tol. %
SRN2508A-R47M 0.47 ±20 10 340 0.080 1.45 2.50
SRN2508A-R68M 0.68 ±20 10 270 0.100 1.35 2.05
SRN2508A-1R0M 1.0 ±20 10 220 0.120 1.20 1.75
SRN2508A-1R5M 1.5 ±20 10 180 0.170 1.05 1.65
SRN2508A-2R2M 2.2 ±20 10 140 0.210 0.95 1.40
SRN2508A-3R3M 3.3 ±20 10 110 0.300 0.85 1.10
SRN2508A-4R7M 4.7 ±20 10 90 0.400 0.70 0.90
SRN2508A-6R8M 6.8 ±20 10 80 0.670 0.55 0.75
SRN2508A-100M 10 ±20 10 50 0.930 0.45 0.55 Core ..............................................Ferrite
Wire ............................Enameled copper
Terminal Finish ...................................Sn
Coating .................Magnetic epoxy resin
Packaging ....... 2000 pcs. per 7-inch reel
Materials
Product Dimensions
Recommended Layout
DIMENSIONS: MM
(INCHES)
Electrical Schematic How to Order
SRN2508A - R47M
Model
Value Code (see table) 2.5 +0.3/-0.1
(.098 +.012/-.004)
2.0 +0.35/-0.05
(.079 +.014/-.002)
REF.
0.85
(.033)
REF.
0.8
(.031)
REF.
0.85
(.033)
MAX.
0.8
(0.31)
2.2
(.087)
REF.
0.8
(.031)
REF.
2.7
(.106)
REF.
DIMENSIONS: MM
(INCHES)
*RoHS COMPLIANT,**HALOGEN FREE
& AEC QUALIFIED
**Bourns considers a product to be “halogen free” if (a) the Bromine (Br) content is 900 ppm or less; (b) the Chlorine
(Cl) content is 900 ppm or less; and (c) the total Bromine (Br) and Chlorine (Cl) content is 1500 ppm or less.
WARNING Cancer and Reproductive Harm - www.P65Warnings.ca.gov
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 his document, and at www.bourns.com/docs/legal/disclaimer.pdf
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
SRF0504 Series - Line Filter
Inductance vs. Current
SRN2508A Series - Semi-shielded Power Inductors
00.6 1.2 1.8 2.4 3.0
0
0.4
0.2
0.6
0.8
Inductance (μH)
DC Current (A)
SRN2508A-R47M
00.5 1.0 1.5 2.0 2.5
0
0.6
0.3
0.9
1.2
Inductance (μH)
DC Current (A)
SRN2508A-R68M
00.5 1.0 1.5 2.0
0
1.0
0.5
1.5
2.0
Inductance (μH)
DC Current (A)
SRN2508A-1R0M
00.5 1.0 1.5 2.0
0
1.0
0.5
1.5
2.0
2.5
Inductance (μH)
DC Current (A)
SRN2508A-1R5M
00.4 0.8 1.2 1.6
0
2
1
3
4
Inductance (μH)
DC Current (A)
SRN2508A-2R2M
00.3 0.6 0.9 1.2 1.5
0
3.0
1.5
4.5
6.0
Inductance (μH)
DC Current (A)
SRN2508A-3R3M
00.3 0.6 0.9 1.2
0
4
2
6
8
Inductance (μH)
DC Current (A)
SRN2508A-4R7M
00.2 0.4 0.6 0.8 1.0
0
6
3
9
12
Inductance (μH)
DC Current (A)
SRN2508A-6R8M
00.2 0.4 0.6 0.8
0
10
5
15
20
Inductance (μH)
DC Current (A)
SRN2508A-100M
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 disclaimers as set forth on the last page of this document, and at www.bourns.com/legal/disclaimer.pdf.
SRF0504 Series - Line Filter
SRN2508A Series - Semi-shielded Power Inductors
10/17
DIMENSIONS: MM
(INCHES)
QTY: 2000 PCS. PER REEL
8.4 ± 1.0
(.331 ± .004)
50.0
(1.969)
MIN.
13.0 ± 0.8
(.512 ± .031)
178 ± 2.0
(7.008 ± .079)
USER DIRECTION OF FEED
4.0 ± 0.1
(.157 ± .004)
4.0 ± 0.05
(.157 ± .002)
8.0 ± 0.1
(.315 ± .004)
0.23 ± 0.05
(.009 ± .002)
1.4 ± 0.2
(.055 ± .008)
2.27 ± 0.05
(.089 ± .002)
2.74 ± 0.05
(.108 ± .002)
2.0 ± 0.05
(.079 ± .002)
25
Temperature (°C)
Time (Seconds)
Preheating Soldering Natural Cooling
217 °C
tp (245 °C, 20~40 Sec.)
200 °C
150°C
60~180
Sec.
480 Sec. Max.
60~150 Sec.
TP (260 °C, 10 Sec. Max.)
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 disclaimers as set forth on the last page of this document, and at www.bourns.com/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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