Delta Electronics SI54 User Manual
SMT Power Inductor
SI54 Type
Features
RoHS compliant.
Low profile (3.5mm max. Height) SMD type.
Unshielded.
Self-leads, suitable for high density
High energy storage and low DCR.
Provided with embossed carrier tape packing.
Ideal for power source circuits, DC-DC converter, DC-AC inverters
inductor applications.
In addition to the standard versions shown here, customized inductors
are available to meet your exact requirements.
Mechanical Dimension:
C
A
mounting.
B
RECOMMENDED PAD PATTERNS
5.2
D
1.0
4.0
UNIT:mm/inch
A = 4.5 0.15 / 0.177 0.006
B = 4.0 0.15 / 0.157 0.006
C = 3.2 0.3 / 0.126 0.012
D = 1.0 0.2 / 0.039 0.008
Electrical Characteristics:
PART NO.
SI54 - 1R0 1.0 0.0480 2.70
SI54A - 1R0 1.0 0.0200 5.60
SI54 - 1R5 1.5 0.0560 2.60
SI54 - 1R8 1.8 0.0630 2.00
SI54 - 2R2 2.2 0.0710 1.90
SI54 - 2R7 2.7 0.0780 1.80
SI54 - 3R3 3.3 0.0860 1.70
SI54A - 3R3 3.3 0.0860 2.90
SI54 - 3R9 3.9 0.0930 1.60
SI54 - 4R7 4.7 0.1080 1.50
SI54A - 4R7 4.7 0.0108 2.50
SI54 - 5R6 5.6 0.1250 1.40
SI54 - 6R8 6.8 0.1310 1.30
SI54 - 8R2 8.2 0.1460 1.20
SI54 - 100 10.0 0.1820 1.10
SI54 - 120 12.0 0.2100 0.97
SI54 - 150 15.0 0.2350 0.85
SI54 - 180 18.0 0.3380 0.74
SI54 - 220 22.0 0.3780 0.68
SI54 - 270 27.0 0.5220 0.62
SI54 - 330 33.0 0.5400 0.56
SI54 - 390 39.0 0.5870 0.52
SI54 - 470 47.0 0.8440 0.44
SI54A - 470 0.3 0.8440 0.77
SI54 - 560 56.0 0.9370 0.42
SI54A - 560 0.3 0.9370 0.75
SI54 - 680 68.0 1.1170 0.37
1. Tolerance of inductance : 15% for 1.0~8.2uH, 10% for 10~68uH.
2. Irated is the DC current which cause the inductance drop less than 10%(20% for A-3R3 & A-4R7) of its nominal
inductance without current and the surface temperature of the part increase less than 45 C.
3. Operating temperature: -20 C to 105 C (including self-temperature rise).
DELTA ELECTRONICS, INC.
(TAOYUAN PLANT CPBG)
L
(uH)
o
C,
25 1KHz, 1V
1
DCR
( ) MAX
Irated
(Adc)
2
100.00
10.00
INDUCTANCE (uH)
1.00
0.10
0.00 0.01 0.10 1.00 10.00
oo
252, SAN YING ROAD, KUEISAN INDUSTRIAL ZONE, TAOYUAN SHIEN, 333, TAIWAN, R.O.C.
TEL: 886-3-3591968; FAX: 886-3-3591991
http://www.deltaww.com
4
680
560
470
390
330
270
220
180
150
120
100
8R2
6R8
5R6
4R7
3R9
3R3
2R7
2R2
1R8
1R5
1R0
CURRENT (A)
o
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