Features
Applications
■ Semi-shielded construction
■ Miniature size
■ DC/DC converters
■ Notebook computers
■ Digital video cameras
■ HDDs
■ Low profile: 1.2 mm
■ Inductance range: 0.24 to 2.2 µH
■ Rated current up to 4.7 A
■ RoHS compliant* and halogen free**
■ Cellphones
■ Televisions, LCD displays
SRN2512 Series - Semi-shielded Power Inductors
Electrical Specifications @ 25 °C
General Specifications
Operating Temperature
................................. -55 °C to +125 °C
(Temperature rise included)
Storage Temperature .... -40 °C to +85 °C
Resistance to Solder Heat
...............................+260 °C for 40 sec.
Temperature Rise .....40 °C at rated Irms
Rated Current
Inductance
@ 1 MHz / 0.1 V
Test
Freq.
(MHz)
SRF
(MHz)
Min.
DCR
(Ω)
Max.
Q
(Ref.)
Irms
(A)
Isat
(A)
Bourns Part No.
SRN2512-R24M
SRN2512-R33M
SRN2512-R47M
SRN2512-R68M
SRN2512-1R0M
SRN2512-1R5M
SRN2512-2R2M
L (μH)
0.24
0.33
0.47
0.68
1.0
Tol. %
20
7
7
1
1
1
1
1
1
1
330
300
190
140
120
90
0.024
0.032
0.032
0.043
0.057
0.096
0.102
4.7
4.5
4.4
3.6
3.5
2.5
2.3
8.0
5.7
5.5
4.5
3.9
3.0
2.7
20
20
8
20
9
............ Inductance drops 30 % at Isat
20
10
10
11
1.5
20
Materials
2.2
20
80
Core..............................................Ferrite
Wire ............................Enameled copper
Terminal Finish ...................................Sn
Coating .................Magnetic epoxy resin
Packaging....... 2000 pcs. per 7-inch reel
Soldering Profile
Peak Temperature 260
max.
Max. Peak Temperature 260
40 sec. max.
Max. Time Above 217 : 60~150 sec. max.
Product Dimensions
Preheating
Soldering
Natural Cooling
2.5 +0.2/-0.1
(.098 +.008/-.004)
20~40 Sec.
Peak Temperature (260 °C, 40 Sec. Max.)
217 °C
200 °C
2.0 +0.35/-0.05
(.079 +.014/-.002)
60~150 Sec.
150°C
60~180
Sec.
480 Sec. Max.
25
Time (Seconds)
Reflow Times: 3 Times Max.
Electrical Schematic
How to Order
0.85
(.033)
REF.
0.85
(.033)
REF.
SRN2512 - R24M
0.8
(.031)
REF.
Model
Value Code (see table)
1.2
(.047)
MAX.
Asia-Pacific: Tel: +886-2 2562-4117 • Fax: +886-2 2562-4116
EMEA: Tel: +36 88 520 390 • Fax: +36 88 520 211
The Americas: Tel: +1-951 781-5500 • Fax: +1-951 781-5700
www.bourns.com
Recommended Layout
2.9
(.114)
WARNING Cancer and Reproductive Harm - www.P65Warnings.ca.gov
*
RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
**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.
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
2.4
0.8
(.094)
(.031)
the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf
MM
(INCHES)
DIMENSIONS: