Features
Applications
■ Semi-shielded construction
■ Inductance range: 1 to ꢀꢀ0 µH
■ Rated current up to 3 A
■ RoHS compliant* and halogen free**
■ DC/DC converters
■ Notebook computers
■ Digital video cameras
■ HDDs
150
■ Cellphones
■ Televisions, LCD displays
SRN4026 Series - Semi-shielded Power Inductors
Operating Temperature
................................. -40 °C to +125 °C
(Temperature rise included)
Storage Temperature (Component)
................................. -40 °C to +125 °C
Resistance to Solder Heat
...............................+260 °C for 10 sec.
Temperature Rise.....40 °C at rated Irms
Rated Current
Inductance
@ 100 KHz / 1 V
Test
Freq.
(MHz)
SRF
(MHz)
Typ.
DCR
(Ω)
Max.
Q
(Ref.)
Irms
(A)
Isat
(A)
Bourns Part No. L (μH) Tol. %
SRN4026-1R0Y
SRN4026-1R2Y
SRN4026-2R2Y
SRN4026-3R3M
SRN4026-4R7M
SRN4026-6R8M
SRN4026-100M
SRN4026-150M
SRN4026-220M
SRN4026-330M
SRN4026-470M
SRN4026-680M
SRN4026-101M
SRN4026-151M
SRN4026-221M
1.0
1.2
2.2
3.3
4.7
6.8
10
30
30
30
20
20
20
20
20
20
20
20
20
20
20
20
9
9
7.96
7.96
7.96
7.96
7.96
7.96
7.96
2.52
2.52
2.52
2.52
2.52
0.796
0.796
0.796
100
80
60
50
40
28
26
21
16
13
10
9
0.016
0.024
0.029
0.036
0.048
0.084
0.102
0.144
0.234
0.366
0.594
0.852
1.2
3
3
2.75
2.1
2.75
2.1
9
9
1.6
1.6
9
1.4
1.4
............ Inductance drops 30 % at Isat
Moisture Sensitivity Level.....................1
................. N/A
9
1.2
1.2
11
11
11
16
19
19
30
30
30
0.97
0.77
0.67
0.5
0.97
0.77
0.67
0.5
15
Materials
22
Core..............................................Ferrite
Wire ............................Enameled copper
Terminal Finish ........................Sn/Ag/Cu
Coating .................Magnetic epoxy resin
Packaging..... 3000 pcs. per 13-inch reel
33
47
0.4
0.4
68
0.35
0.3
0.35
0.3
100
150
220
7
6
1.92
0.22
0.2
0.22
0.2
4
2.76
Product Dimensions
4.0 0.ꢀ
(.157 .00ꢁ8
Temperature
Rising Area
Preheat
Area
Reflow
Area
Forced
Cooling Area
+4.0 °C/Sec. Max.
150~ꢀ00 °C / 60~1ꢀ0 Sec.
+3.0 °C/Sec. Max.
-(1.0~5.08 °C/Sec. Max.
4.0 0.ꢀ
(.157 .00ꢁ8
Peak Temperature: ꢀ60 °C
ꢀ50
ꢀ00
150
100
50
ꢀ17 °C
60~150 Sec.
60 Sec.
Max.
60~1ꢀ0 Sec.
Reflow
Peak Temp.
Max. Peak Temp. -5
30 sec. max.
Max. Time Above 217
60~150 sec. max.
:
50
100
150
ꢀ00
ꢀ50
0
Time (Seconds8
How to Order
ꢀ.5
(.09ꢁ8
MAX.
Electrical Schematic
MM
(INCHES8
DIMENSIONS:
SRN4026 - 4R7M
Model
Recommended Layout
Value Code (see table)
4.55
(.1798
WARNING Cancer and Reproductive Harm - www.P65Warnings.ca.gov
3.6
(.14ꢀ8
*
RoHS Directive ꢀ00ꢀ/95/EC Jan. ꢀ7, ꢀ003 including annex and RoHS Recast ꢀ011/65/EU June ꢁ, ꢀ011.
**Bourns considers a product to be “halogen free” if (a8 the Bromine (Br8 content is 900 ppm or less; (b8 the Chlorine
(Cl8 content is 900 ppm or less; and (c8 the total Bromine (Br8 and Chlorine (Cl8 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
1.5
(.0598
1.5
(.0598
the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf