SCOPE
：
This specification applies to the Pb Free high current type SMD inductors for
(1) SHAPES AND DIMENSIONS
(2) ELECTRICAL SPECIFICATIONS
(3) CHARACTERISTICS
MSCDRI-7028F-SERIES
PRODUCT INDENTIFICATION
MSCDRI - 7028F - 6R8 M
① ② ③ ④
① Product Code
② Dimensions Code
③ Inductance Code
④ Tolerance Code
A: 7.00±0.3 mm
B: 7.00±0.3 mm
C: 2.80±0.3 mm
D: 2.00±0.2 mm
E: 4.00Typ. mm
F: 1.50Typ. mm
SEE TABLE 1
TEST INSTRUMENTS
L : HP 4284A PRECISION LCR METER (or equivalent)
RDC : CHROMA MODEL 16502 MILLIOHMMETER (or equivalent)
(3)-1 Ambient temperature ……......... ＋60℃ Max.
(3)-2 Operate temperature range ...... －40℃～＋125℃
(Including self temp. rise)
(3)-3 Storage temperature range ...... －40℃～＋125℃
MAG.LAYERS
MSCDRI-7028F-SERIES Page 1/8
TABLE 1
MAGLAYERS
PT/NO.
MSCDRI-7028F-3R3□
MSCDRI-7028F-4R7□
MSCDRI-7028F-6R8□
MSCDRI-7028F-100□
MSCDRI-7028F-150□
MSCDRI-7028F-220□
MSCDRI-7028F-330□
MSCDRI-7028F-470□
※ □ specify the inductance tolerance,M(±20%),N(±30%)
※ IDC : Based on inductance change (△ L/Lo： ≦ drop 15%) @ ambient temp. 25℃ and
Based on temperature rise (△T： 40℃ Typ.)
Inductance Percent Test Resistance
L(μH) Tolerance Frequency
3.3 M,N 100kHz/0.25V 28m 3R3
4.7 M,N 100kHz/0.25V 38m 4R7
6.8 M,N 100kHz/0.25V 59m 6R8
10 M,N 100kHz/0.25V 83m 100
15 M,N 100kHz/0.25V 0.11 150
22 M,N 100kHz/0.25V 0.18 220
33 M,N 100kHz/0.25V 0.24 330
47 M,N 100kHz/0.25V 0.34 470
RDC(Ω)±20%
Rated DC Current
IDC(A)
1.60
1.50
1.30
1.10
0.88
0.75
0.65
0.54
Marking
MAG.LAYERS
MSCDRI-7028F-SERIES Page-2/8
(4) RELIABILITY TEST METHOD
MECHANICAL
TEST ITEM SPECIFICATION TEST DETAILS
Substrate bending
△L/Lo≦±5%
There shall be direction is made approximately 3mm.(keep time 30 seconds)
no mechanical PCB dimension shall the page 7/9
damage or elec- F(Pressurization)
trical damege.
The sample shall be soldered onto the printed circuit board
in figure 1 and a load applied unitil the figure in the arrow
PRESSURE ROD
figure-1
Vibration
Solderability
△L/Lo≦ ±5%
There shall be and a frequency of from 10 to 55Hz/1 minute repeated should
no mechanical be applied to the 3 directions (X,Y,Z) for 2 hours each.
damage. (A total of 6 hours)
New solder Flux (rosin, isopropyl alcohol{JIS-K-1522}) shall be coated
More than 90% over the whole of the sample before hard, the sample shall
The sample shall be soldered onto the printed circuit board
and when a vibration having an amplitude of 1.52mm
then be preheated for about 2 minutes in a temperature of
130～150℃ and after it has been immersed to a depth 0.5mm
below for 3±0.2 seconds fully in molten solder M705 with
a temperature of 245±5℃.
More than 90% of the electrode sections shall be couered
with new solder smoothly when the sample is taken out of
the solder bath.
MAG.LAYERS
MSCDRI-7028F-SERIES
Page-3/8
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