Tel: 33 3 82 59 13 33 - Fax: 33 3 82 51 00 49
Specifications may change without notice - Revised
02/04/2003
www.microspire.com
Electrical Data
Part
L1,2
I3.6
L2.4
I5
Rdc Max
Number no load
rated
at rated I peak max at 25°C
SESI 18
µH
A
µH
A
m
Ω
5K6 1W
6.2
9.8
4.2
13.6
7.5
8K2 1W
8.6
8.3
5.7
11.5
9.0
11K 1W
11.5
7.2
7.7
10
12
15K 1W
14.7
6.35
10.5
8.9
15
18K 1W
18.4
5.7
12.6
7.9
17
22K 1W
22.5
5.1
15.4
7.2
20
22K 2W
22.4
5.6
21.0
7.3
24
27K 1W
27.0
4.7
18.9
6.5
25
37K 1W
37.0
4.0
25.9
5.6
29
49K 1W
49.0
3.5
34.3
4.8
45
SMD Power Inductors - SESI 18 W
• Energy storage, smoothing, filtering
• Low profile and light
• Highly efficient and reliable
• Materials meet UL 94-V0 rating
• Suited for IR and vapor reflow soldering
• Frequency range up to 1 MHz
• Operating temperature range : -
40 to +100°C
• Weight : 10 grams
Part
L1,2
I3.6
L2.4
I5
Rdc Max
Number no load
rated
at rated I peak max at 25°C
SESI 18
µH
A
µH
A
m
Ω
56K 1W
56
3.3
39
4.6
48
70K 1W
70
2.9
49
4.1
65
86K 1W
86
2.6
60
3.7
72
M10 1W
103
2.4
70
3.3
75
M12 1W
122
2.2
84
3.1
115
M15 1W
154
1.95
105
2.7
125
M18 1W
177
1.8
126
2.6
175
M22 1W
228
1.6
154
2.3
210
M33 1W
334
1.34
231
1.9
250
Packaging (mm)
Tape and Reel : 300 pieces per reel of diameter 330 mm
Notes
Connections
1. Tolerance ± 10% for L > 10 µH, ± 20% for L
≤ 10µH
2. Inductance at 0.5V, 100kHz
3. Irated (permanent DC) without heatsink ;
With heatsink I = Irated x 1.4
4. Typical inductance value at recommended full load
5. Ipeak max= maximum peak value of current at
+1
00°C; L value not guaranteed
6. 40% admissible Iripple over Irated at f=200 kHz
Ao : 19.4
F : 20.2
W : 44.0
Bo : 26.4
P1 : 24.0
So : 40.4
Ko : 8.4
Po : 4.0
F
Bo
Ko
Ao
P1
Po
WSo
Dimensions(mm)Typical values
Pad Layout
22.0
±0.3
26.
5 max
±0.4
20.0 max
9 max
3.0
3.81
21
28
2 x 0.3
41
58
To order, please specify : SESI 18 xxx xW
SE18 49K
1 YY/ WW P
1/ f
t
I
I ripple
I rated
I peak
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