*R
oH
** S C
HA O
LO MP
GE LIA
N NT
FR a
EE nd
Features
■ Shielded construction – low radiation
■ Bifilar wound
■ Use with Chip LAN transformers SM453229-231N7Y and SM453229-381N7Y
■ AEC-Q200 compliant
■ RoHS compliant* and halogen free**
SRF2012A Series - Common Mode Chip Inductors
Electrical Specifications at 25 °C
Impedance
@ 100 MHz / 1 V
Part Number
(Ω)
Tolerance
(%)
SRF2012A-801Y
800
± 25
General Specifications
Rated
Voltage
(VDC)
Max.
Withstand
Voltage
(VDC) Max.
Insulation
Resistance
(Ω) Min.
DCR
Max.
(Ω)
Irms
(mA)
100
250
10 M
0.88
300
Soldering Profile
PRE-HEATING
NATURAL
COOLING
SOLDERING
Materials
TP (260 °C / 10 seconds max.)
Core ..............................................Ferrite
Wire ............................Enameled copper
Terminal Finish ...................................Sn
Packaging ....... 2000 pcs. per 7-inch reel
tp (245 °C / 20~40 seconds)
Temperature (°C)
Max. Rated Voltage ................. 100 VDC
Max. Withstanding Voltage ...... 250 VDC
Insulation Resistance
...................10 MΩ (Min.) @ 100 VDC
Operating Temperature
................................-55 °C to +125 °C
(Temperature rise included)
Storage Temperature
................................-55 °C to +125 °C
Temperature Rise .....20 °C at rated Irms
217
200
60 ~ 150 seconds
150
Product Dimensions
60 ~ 180 seconds
25
2.0 ± 0.20
(.079 ± .008)
480 seconds max.
Time (Seconds)
REFLOW TIMES: 3 MAX.
Schematic
1
4
0.15 ± 0.10
(.006 ± .004)
Recommended Layout
2
3
1
2
4
1.25
(.049)
3
2
4
3
0.51 ± 0.10
(.020 ± .004)
1.40
(.055)
0.45
(.018)
2.60
(.102)
DIMENSIONS:
1
MM
(INCHES)
0.50 ± 0.10
(.020 ± .004)
0.51 ± 0.10
(.020 ± .004)
0.50 ± 0.10
(.020 ± .004)
1.20 ± 0.20
(.047 ± .008)
1.20 ± 0.20
(.047 ± .008)
DIMENSIONS:
WARNING Cancer and Reproductive Harm www.P65Warnings.ca.gov
* RoHS Directive 2015/863, Mar 31, 2015 and Annex.
** 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 the
last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
MM
(INCHES)
SRF2012A-801Y - Common Mode Chip Inductors
Typical Impedance vs. Frequency Curves
Impedance (Ohms)
10000
Common Mode
1000
100
10
Normal Mode
1
0.1
1
10
100
1000
10000
Frequency (MHz)
Packaging Specifications
9.0 ± 0.5
(.354 ± .020)
13.5 ± 0.5
(.531 ± .020)
DIA.
13.5 ± 0.5
DIA.
(.531 ± .020)
60 ± 2.0
(2.362 ± .079)
1.9
R
(.075)
178 ± 2.0
(7.008 ± .079)
2.0
(.079)
10.5
(.413)
0.5
R
(.020)
R
120 °
2.00 ± 0.05
(.079 ± .002)
4.00 ± 0.1
(.157 ± .004)
1.75 ± 0.10
(.069 ± .004)
A
1.50 + 0.10
DIA.
(.059 + .004)
0.28 ± 0.05
(.011 ± .002)
8.00 ± 0.10
(.315 ± .004)
3.50 ± 0.05
(.138 ± .002)
2.35 ± 0.10
(.093 ± .004)
4.00 ± 0.10
(.157 ± .004)
A
1.50 ± 0.10
(.059 ± .004)
USER DIRECTION OF FEED
QTY: 2000 PCS. PER REEL
1.45 ± 0.10
(.057 ± .004)
SECTION A-A
DIMENSIONS:
MM
(INCHES)
REV. 11/19
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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