Features
n Semi-shielded construction
n High rated current
n Component height: 4 mm
n Inductance range: 0.5 to 100 µH
n Rated current up to 10 A
n RoHS compliant* and halogen free**
Applications
n DC/DC converters
n Notebook computers
n Digital video cameras
n HDDs
n Cell phones
n Televisions, LCD displays
SRN8040 Series - Semi-shielded Power Inductors
*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
**Bourns follows the prevailing definition of “halogen free” in the industry. 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.
Specifications are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specific applications.
Operating Temperature
................................. -40 °C to +125 °C
(Temperature rise included)
Storage Temperature .. -40 °C to +125 °C
Resistance to Solder Heat
...............................+250 °C for 10 sec.
Temperature Rise .....40 °C at rated Irms
Rated Current
............ Inductance drops 30 % at Isat
Electrical Specications @ 25 °C General Specications
Core ..............................................Ferrite
Wire ............................Enameled copper
Terminal Finish ........................Sn/Ag/Cu
Coating .................Magnetic epoxy resin
Packaging ..... 1000 pcs. per 13-inch reel
Materials
Product Dimensions
Recommended Layout
Electrical Schematic
DIMENSIONS:
MM
(INCHES)
*RoHS COMPLIANT
LEAD FREE
*RoHS COMPLIANT
VERSIONS
AVAILABLE
LEAD FREE
VERSIONS ARE
RoHS COMPLIANT*
How to Order
SRN8040 - 100M
Model
Value Code (see table)
Soldering Prole
8.0 ± 0.3
(.315 ± .012)
8.0 ± 0.3
(.315 ± .012)
MAX.
4.0
(.157)
8.15 ± 0.2
(.321 ± .008)
7.9 ± 0.2
(.311 ± .008)
REF.
3.0
(.118)
3.0
(.118)
REF.
2.6
(.102)
REF.
2.6
(.102)
8.0 ± 0.3
(.315 ± .012)
8.0 ± 0.3
(.315 ± .012)
8.2
(.323)
REF.
REF.
3.0
(.118)
REF.
2.6
(.102)
REF.
2.6
(.102)
Bourns Part No.
Inductance @
100 KHz / 1 V
Q
(Ref.)
Test
Freq.
(MHz)
SRF
(MHz)
Typ.
DCR
(W)
Max.
Irms
(A)
Isat
(A)L (mH) Tol. %
SRN8040-R50Y 0.5 30 13 7.96 125 0.007 10 12
SRN8040-1R0Y 1.0 30 13 7.96 75 0.01 7.8 11
SRN8040-1R5Y 1.5 30 13 7.96 55 0.011 7 8.2
SRN8040-2R2Y 2.2 30 13 7.96 40 0.013 6.3 7.4
SRN8040-3R3Y 3.3 30 13 7.96 34 0.021 5.6 5.5
SRN8040-3R6Y 3.6 30 13 7.96 32 0.022 4.9 5.3
SRN8040-4R7Y 4.7 30 13 7.96 28 0.024 4.1 4.7
SRN8040-6R8Y 6.8 30 13 7.96 23 0.033 3.9 4.2
SRN8040-8R2Y 8.2 30 13 7.96 20 0.045 3.7 4
SRN8040-100M 10 20 20 2.52 18 0.05 3.1 3.4
SRN8040-150M 15 20 15 2.52 14 0.07 2.4 2.7
SRN8040-220M 22 20 20 2.52 12 0.1 2.2 2.2
SRN8040-330M 33 20 20 2.52 10 0.145 1.7 1.9
SRN8040-470M 47 20 15 2.52 9 0.19 1.4 1.5
SRN8040-680M 68 20 20 2.52 7 0.275 1.1 1.2
SRN8040-101M 100 20 10 0.796 6 0.4 1 1
Temperature (°C)
100
0
50
50
150
250
200
Rising Area
Temperature
±3.0 °C/sec. max.
Forced CoolingArea
6.0/secmax.°C
PeakTemperature:
Time (Seconds)
100150 200
40~90 sec.max.
250 °C +5/-10 °C, 5 sec. max.
150 ~ 200 °C / 60 - 180 sec.
PreheatArea
+1.5 ~3.0 °C
Reflow Area
250
217 °C
Peak Te mperature:
255 ° max.
Maximum Time Above 217 °C:
90 seconds
