SMT Power Inductor
SILM4018L Type
Features
RoHS compliant.
Low profile(1.8mm max. height) SMD type.
Magnetically shielded, suitable for high density mounting.
Provided with embossed carrier tape packing.
Idel for power source circuits,
In addition to the standard versions shown here, customized inductors are available to meet your exact requirements.
RECOMMENDED PAD PATTERNS
Mechanical Dimension :
B | C |
A
E
D
F
Electrical Characteristics : 25 OC : 100KHz, 0.1V
PART NO. | L 1 | DCR | Isat 2 | Ir 3 | |
(uH) | (m ) MAX | (Adc) | (Adc) | ||
| |||||
SILM4018L - 3R3 | 3.3 | 66 | 0.80 | 2.00 | |
SILM4018L - 3R9 | 3.9 | 81 | 0.75 | 1.75 | |
SILM4018L - 4R7 | 4.7 | 91 | 0.68 | 1.72 | |
SILM4018L - 5R6 | 5.6 | 102 | 0.62 | 1.64 | |
SILM4018L - 6R8 | 6.8 | 130 | 0.58 | 1.30 | |
SILM4018L - 8R2 | 8.2 | 140 | 0.51 | 1.28 | |
SILM4018L - 100 | 10.0 | 190 | 0.46 | 1.07 | |
SILM4018L - 120 | 12.0 | 205 | 0.42 | 0.98 | |
SILM4018L - 150 | 15.0 | 272 | 0.38 | 0.87 | |
SILM4018L - 180 | 18.0 | 327 | 0.34 | 0.76 | |
SILM4018L - 220 | 22.0 | 356 | 0.31 | 0.66 | |
SILM4018L - 270 | 27.0 | 470 | 0.28 | 0.60 | |
SILM4018L - 330 | 33.0 | 560 | 0.26 | 0.55 | |
SILM4018L - 390 | 39.0 | 700 | 0.24 | 0.47 | |
SILM4018L - 470 | 47.0 | 775 | 0.21 | 0.45 |
5.4 
2.2 
1 . 7
100.00
INDUCTANCE (uH) | 10.00 |
| |
| 1.00 |
0.00
UNIT:mm/inch
A= 4.0 / 0.157 Max.
B= 4.0 / 0.157 Max.
C= 1.8 / 0.071 Max.
D= 4.8 / 0.189 Max.
E= 2.9 / 0.114
F= 1.0 / 0.039
470
390
330
270
220
180
150
120
100
8R2
6R8
5R6
4R7
3R9
3R3
0.01 0.10 1.00 10.00
CURRENT (A)
1.Tolerance of inductance : 
30%.
2.Isat is the DC current which cause the inductance drop 35% typical of its nominal inductance without current.
3.Ir is the DC current which cause the surface temperature of the part increase less than 45oC.
4.Operating temperature :
DELTA ELECTRONICS, INC.
(TAOYUAN PLANT CPBG) 252, SAN YING ROAD, KUEISAN INDUSTRIAL ZONE, TAOYUAN SHIEN, 333, TAIWAN, R.O.C.
TEL:
http://www.deltaww.com
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