Features
1. Unshielded power inductor.
2. Wide inductance range.
Applications
1. Inductor in DC/DC converter.
2. Use in STB、PDA、Notebook.
Shape and Dimension
Unit: mm
DIM.
M1
M2
M3
7.8
7.0
3.5
TOL.
±
0.3
±
0.3
±
0.5
Ordering Information
WL
Product
Code
WL:
Inductor
SN
Series
SMD
Unshielded
Power
Inductors
073D
Dimensions
7.8 * 7.0 mm
Z0
Series
extension
Z0:STD
M
Tolerance
M:
±
20%
K :
±
10%
1R0
Value
100 = 10.0uH
101 = 100uH
L
Packing Code
B
L
=13” Reeled
(Embossed tape)
B:STD
Page 2 of 6
ASC_WLSN073D Series_V2.0
Nov. Y2017
Electrical Characteristics
Inductance
Tolerance
±
20%
±
20%
±
20%
±
20%
±
20%
±
20%
±
20%
±
20%
±
20%
±
10%
±
10%
±
10%
±
10%
±
10%
±
10%
±
10%
±
10%
±
10%
±
10%
Test
Freq
(KHz)
100
100
100
100
100
100
100
100
100
100
100
100
10
10
10
10
10
10
10
DCR ( )
MAX.
0.0803
0.0897
0.104
0.111
0.129
0.153
0.170
0.217
0.252
0.282
0.332
0.406
0.481
0.536
0.755
1.022
1.200
1.306
1.495
Rated
Current
(A)
1.44
1.39
1.24
1.12
1.07
0.94
0.85
0.74
0.68
0.64
0.59
0.54
0.51
0.49
0.40
0.36
0.31
0.29
0.28
WLSN073D Series
WLSN073DZ0M100LB
WLSN073DZ0M120LB
WLSN073DZ0M150LB
WLSN073DZ0M180LB
WLSN073DZ0M220LB
WLSN073DZ0M270LB
WLSN073DZ0M330LB
WLSN073DZ0M390LB
WLSN073DZ0M470LB
WLSN073DZ0K560LB
WLSN073DZ0K680LB
WLSN073DZ0K820LB
WLSN073DZ0K101LB
WLSN073DZ0K121LB
WLSN073DZ0K151LB
WLSN073DZ0K181LB
WLSN073DZ0K221LB
WLSN073DZ0K271LB
WLSN073DZ0K331LB
Marking
100
120
150
180
220
270
330
390
470
560
680
820
101
121
151
181
221
271
331
L (uH)
10
12
15
18
22
27
33
39
47
56
68
82
100
120
150
180
220
270
330
TOLERANCE:M:±20%, L:±15%, K:±10%
:
TEST INSTRUMENT: HP4285A/ Chroma 3302,1320.16502
* *
Inductance drops no more than 20% at rated current applied or temperature rises
∆t
≦
40
≦
*
MSL:LEVEL 1
Page 3 of 6
ASC_WLSN073D Series_V2.0
Nov. Y2017
RELIABILITY PERFORMANCE
Reliability Experiment For Electrical
Test Item
Humidity Test
Test Condition
+40℃± 2℃, humidity of 90% ± 5% (total 96 hours).
℃ ℃
Standard Source
MIL-STD-202G
Method 103B
Test Condition B
IEC 68-2
Test Condition B
High Temperature
Test
1.Temperature: +125℃±2℃
℃ ℃
2.Test time: 48±2hrs
1.Temperature: -40℃±2℃
℃ ℃
2.Test time: 48±2hrs
+125℃±5℃ (30 minutes) ~ -40 ± 5℃ (30 minutes),
℃ ℃
℃
temperature switch time: 5 minutes (total 50 cycles).
Low Temperature
Test
IEC 68-2
Test Condition A
MIL-STD-202G
Method 107G
Test Condition B-
2
MIL-STD-202G
Method 108A
Test Condition B
Thermal Shock
Life Test
+70℃±5℃
(
℃ ℃ (250Hours)
Reliability Experiment For Physical
Test Item
Test Condition
10-55-10HZ, amplitude: 1.5mm, direction: X, Y, Z axes,
each axis 2 hours (total 6 hours).
Standard Source
MIL-STD-202G
Method 201A
Vibration Test
Solder Heat
Resistance Test
MIL-STD-202G
IR/convection reflow:Peak Temp 250±5℃ for 5Sec in air,
℃
Method 210F
Through 2 Cycle. Temperature
Test Condition
Ramp:+1~4°
C/sec; Above1 83° must keep 90 s - 120 s
C,
(Reflow)
Soak in 245
℃
solder pot of 3Sec, PAD must have 95%
above coverage.
Solder Ability Test
J-STD-003B
Page 5 of 6
ASC_WLSN073D Series_V2.0
Nov. Y2017