SCOPE：
This specification applies to the Pb Free Wound Chip Inductors for
MLCF-252018-SERIES
PRODUCT INDENTIFICATION
MLCF- 252018 - 100 K
①
②
③ ④
①
Product Code
②
Dimensions Code
③
Inductance Code
④
Tolerance Code
(1) SHAPES AND DIMENSIONS
A: 2.90 Max.
B: 2.54 Max.
C: 2.03 Max.
D: 1.30 Typ.
E: 0.50±0.1
mm
mm
mm
mm
mm
(2) ELECTRICAL SPECIFICATIONS
SEE TABLE 1
TEST INSTRUMENTS
L,Q,SRF : HP 4291B IMPEDANCE ANALYZER (or equivalent)
RDC : CHROMA MODEL 16502 MILLIOHMMETER (or equivalent)
(3) CHARACTERISTICS
(3)-1 Operate temperature range ......
－40℃½＋125℃
(Including self temp. rise)
(3)-2 Storage temperature range ......
－40℃½＋125℃
MAG.LAYERS
MLCF-252018-SERIES
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TABLE 1
MAGLAYERS
PT/NO.
MLCF-252018-R39□
MLCF-252018-R47□
MLCF-252018-R82□
MLCF-252018-1R0□
MLCF-252018-1R2□
MLCF-252018-1R5□
MLCF-252018-1R8□
MLCF-252018-2R2□
MLCF-252018-2R7□
MLCF-252018-3R3□
MLCF-252018-3R9□
MLCF-252018-4R7□
MLCF-252018-5R6□
MLCF-252018-6R8□
MLCF-252018-8R2□
MLCF-252018-100□
MLCF-252018-150□
MLCF-252018-220□
MLCF-252018-330□
MLCF-252018-470□
Inductance
L(μH)
0.39
0.47
0.82
1.0
1.2
1.5
1.8
2.2
2.7
3.3
3.9
4.7
5.6
6.8
8.2
10
15
22
33
47
Percent
Tolerance
J,K
J,K
J,K
J,K
J,K
J,K
J,K
J,K
J,K
J,K
J,K
J,K
J,K
J,K
J,K
J,K
J,K
J,K
J,K
J,K
Quality
Typ.
35
35
35
32
25
32
27
27
27
27
27
27
27
27
25
23
23
23
23
23
L,Q Freq.
(MHz)
25
25
25
7.9
7.9
7.9
7.9
7.9
7.9
7.9
7.9
7.9
7.9
7.9
7.9
2.5
2.5
2.5
2.5
2.5
SRF
DCR
Rated DC Current
IDC1
(mA)Max.
IDC2
(mA)Typ.
Color Coding
1st
Orange
Yellow
Gray
Brown
Brown
Brown
Brown
Red
Red
Orange
Orange
Yellow
Green
Blue
Gray
Brown
Brown
Red
Orange
Yellow
2nd
White
Violet
Red
Black
Red
Green
Gray
Red
Violet
Orange
White
Violet
Blue
Gray
Red
Black
Green
Red
Orange
Violet
3rd
Brown
Brown
Brown
Red
Red
Red
Red
Red
Red
Red
Red
Red
Red
Red
Red
Orange
Orange
Orange
Orange
Orange
(MHz)Min. (Ω) Max.
460
460
360
340
290
230
180
140
130
125
100
90
60
60
55
55
36
29
21
17
0.20
0.20
0.35
0.34
0.25
0.42
0.45
0.50
0.55
0.60
0.80
0.90
1.00
1.05
1.20
1.55
2.38
2.92
4.10
7.80
2400
2400
1800
2100
1900
1500
1700
1200
1200
1300
1200
1100
1000
950
850
800
650
550
450
350
1800
1100
1000
900
860
740
720
700
560
540
480
400
400
420
380
240
200
180
140
100
※
1.
□
specify the inductance tolerance,J(±5%),K(±10%)
※
2. IDC1： Based on inductance change (△L/L0 : drop 10% Max.) @ambient temperature 25℃
IDC2： Based on temperature rise
(△T：25℃ TYP.)
Rated DC Current： The less value which is IDC1 or IDC2.
3. Color coding is not necessarily same position,
and Color coding non-directional printing.
MAG.LAYERS
MLCF-252018-SERIES
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(4) RELIABILITY TEST METHOD
MECHANICAL
Item
Solderability
Specifications
The metalized area must have 90%
minimum solder coverage.
Resistance to
soldering heat
There must be no case deformation
or change in dimensions.
Inductance must not change more
than the stated tolerance.
Test conditions
Dip pads in flux and dip in solder pot
(96.5 Sn/3.5 Ag solder) at 255°C ±5°C.
Inductors shall be reflowed onto a PC board
using 96.5 Sn/3.5 Ag solder paste.
Solder process shall be at a maximum
temperature of 260°C.
For 96.5 Sn/3.5 Ag solder paste:>217°C for
90 seconds
Vibration
There must be no case deformation
or change in dimensions.
Inductance must not change more
than the stated tolerance.
Solder specimen inductor on the test printed
circuit board.
Apply vibrations in each of the x,y and z
directions for 2 house for a total of 6 hours.
Frequency
Amplitude
High
temperature
resistance
There must be no case deformation
or change in dimensions.
Inductance must not change more
than the stated tolerance.
: 10~50 Hz
: 1.5mm
Inductors shall be subjected to temperature
125±2℃ for 500±12 hours.
Measure the test items after leaving the
inductors at room temperature and humidity
for 2 hours.
Static
Humidity
Inductors must not have a shorted
or open winding.
Inductors shall be subjected to temperature
85±2℃ and 90 to 95%RH. for ten 24-hours.
Measure the test items after leaving the
inductors at room temperature and humidity
for 2 hours.
Component
adhesion
(push test)
Inductors shall be subjected to
1.8Kg
Inductors shall be reflow soldered (255°C
±5°C for 10 seconds) to a tinned copper
substrate. A force gauge shall be applied
to the side of the component.
The device must withstand the stated force
without a failure of the termination.
MAG.LAYERS
MLCF-252018-SERIES
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MECHANICAL
Item
Low
temperature
storage
Specifications
There must be no case deformation
or change in dimensions.
Inductance must not change more
than the stated tolerance.
Test conditions
Inductors shall be subjected to temperature
-40±2℃ for 48±12 hours.
Measure the test items after leaving the
inductors at room temperature and humidity
for 1 to 2 hours.
Resistance to
solvent
There must be no case deformation,
change in dimensions, or
obliteration of marking.
Thermal
shock
There must be no case deformation
or change in dimensions.
Inductance must not change more
than the stated tolerance.
Inductors shall be subjected to 10 cycles
to the the following temperature cycle:
Inductors must withstand 6 minutes of
alcohol or water.
1 cycle
+125℃
30 min.
30 sec
-40℃
30 min.
Measure the test items after leaving the
inductors at room temperature and humidity
for 2 hours.
MAG.LAYERS
MLCF-252018-SERIES
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(5) RECOMMENDED SOLDERING CONDITIONS
(Please use this product by reflow soldering)
(5)-1 RECOMMENDED FOOTPRINT
Unit: mm
(5)-2 RECOMMENDED REFLOW PATTERN
Temperature(℃)
300
260
200
150
100
50
Time
1 to 4 min.
10 sec
more than 2 min.
Preheating
Solding
260℃
Natural Cooling
(5)-3 IRON SOLDERING
Use a solder iron of less than 30W when soldering ,do not allow the soldering
iron tip directly touch the Ferrite body outside of terminal electrode.
3 seconds max. at 260℃.
MAG.LAYERS
MLCF-252018-SERIES
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