SPECIFICATION FOR APPROVAL
PAGE:1
PROD.
NAME
PART NO:
SRR1280-271V4K
20120926
Shielded SMD Power Inductor
REF
Ⅰ﹒
Configuration and dimensions
：
A
271
D
E
C
B
Unit：m/m
A
12.5 0.3
B
12.5 0.3
C
7.5 0.5
D
5.0 0.3
E
7.0 typ.
F
6.8 ref.
G
5.4 ref.
H
2.9 ref.
Ⅱ﹒
Description
：
a﹒ Ferrite drum core construction.
b﹒ Magnetically shielded.
c﹒ Enamelled copper wire class
：F
d﹒ Product weight
：4.5 g
（ref.）
e﹒ Moisture sensitivity Level 1
f﹒ Products comply with RoHS' requirements
g﹒ Halogen Free available
250
Temperature
Rising Area
+4.0 ℃ / sec max.
Peak Temp 245℃ max.
：
Max. Peak Temp - 5℃： 30sec max.
Max time above 217℃: 60sec~150sec max.
Preheat Area
Reflow Area
Forced Cooling Area
150 ~ 200 ℃ / 60 ~ 120sec +3.0 ℃ / sec max. -(1.0 ~ 5.0) ℃ / sec max.
Peak Temperature:
245℃
217℃
Temperature ( ℃ )
Ⅲ﹒
General specification
：
a﹒ Storage temp.
：-40℃ ----+125℃
b﹒ Operating temp. -40℃----+125℃
：
（Temp. rise included）
c﹒ Resistance to solder heat 245℃. 0 secs.
：
1
200
150
60sec~120sec
60sec~150sec
60sec max.
100
50
0
50
100
150
Time ( seconds )
200
250
BOURNS INDUCTIVE COMPONENTS
SPECIFICATION FOR APPROVAL
PAGE:4
PROD.
NAME
PART NO:
SRR1280-271V4K
20120926
Shielded SMD Power Inductor
REF
Ⅶ﹒ Reliability test
：
Item
1.High Temperature
Exposure
Reference documemts
Test Condition
Test Specification
1.No mechanical and electrical
damage.
2.Inductance shall not change
more than 20%.
1.No mechanical and electrical
damage.
2.Inductance shall not change
more than 20%.
1.No mechanical and electrical
damage.
2.Inductance shall not change
more than 20%.
1.No mechanical and electrical
damage.
2.Inductance shall not change
more than 20%.
1.No pollution on the surface of
products.
2.Clear marking.
3.No crack.
Per product specification
standard
1.No body change in apperarance.
2.No marking blurred.
3.Inductance shall not change
more than 20%.
1.No mechanical and electrical
damage.
2.Inductance shall not change
more than 20%.
MIL-STD-202 Method 108
1.Temperature: 125℃
2.Time:96 hours.
1.Temperature: -40 ℃ ~ 125℃
2.Temperature Cycling
JESD22 Method JA-104
2.Number of cycle:96 cycle
3.Dwell time:30 minutes
1.Temperature: 85 5 ℃
3.Humidity: 85 5 % RH.
1.Temperature: 125 ℃
3.Biased Humidity
Test
MIL-STD-202 Method 103
2.Time:96 Hours
4.Operational Life
MIL-PRF-27
2.Time:96 hours.
3.Rated current = 1.6A
Inspect product
constructions, marking and
workmanship.
Verkfy physical dimensions to
the applicable product detail
specification.
5.Exeternal Visual
MIL-STD-883 Method 2009
6.Physical Dimensions
JESD22 Method JB-100
7.Resistance to
Solvents
Immerse into solvent for 3 0.5 minutes &
MIL-STD-202 Method 215
brush 10 times for therr cycles.
1.Frequency and Amplitued :
10-2000-10 Hz, 1.5 mm.
MIL-STD-202 Method 204
2.Direction:X, Y, Z
3.Test duration:2 hours for each direction,
6 hours in total.
8.Vibration Test
1.Highest temperature：245 5 ℃
9.Resistance To
）：60~150 Second.
MIL-STD-202 Method 210
2.Time（temp. ≧ 217 ℃
Soldering Heat Test
3.IR reflow times times.
：3
10.Rated current
11.Temperature rise
12.Over load
1.No mechanical and electrical
damage.
2.Inductance shall not change
more than 20%.
1.No mechanical and electrical
damage.
MIL-STD-202 Method 330
Apply rated current for 5 second.
2.Inductance shall not change
more than 20%.
1.No mechanical and electrical
damage.
Apply rated current for 10 minutes.
MIL-PRF-27
2.Inductance shall not change
more than 20%.
1.No mechanical and electrical
Apply twice as rated current for 5 minutes.
damage.
MIL-PRF-27
(It’s not application to some special design)
2.Inductance shall not change
more than 20%.
1.Baking in pre-testing
：
155 5℃ /16Hours 30 min.
2.Peak temperature：240 5 ℃
3.Time
（temp.≧ 217℃
）：60~150 second.
4.IR reflow times times.
：1
1.Operating temperature -40℃ ~125℃
：
2.Room temperature
：25℃.
The terminal shall be at least 95%
covered with fresh solder.
1.No mechanical and electrical
damage.
2.Inductance shall not change
more than 20%.
13.Solderability Test
J-STD-002
14.Electrical
Characteriazation User Spec.
15.Withstanding
Voltage Test
16.Drop
1.DV:500V
MIL-STD-202 Method 201 2.Time:1minutes
Packaged&Drop down from 1m. in 1 angle
JESD22-B111
1.During the test no breakdown.
2.The characteristic is normal after test.
1.No case deformation or change in
appearance.
2.Inductance shall not change
more than 20%.
After test, inductors shall be on
mechanical damage.
1ridges & 2 surfaces orientation.
1.Apply push force to samples
mounted on PCB.
2.Force of 1.8 kg for 60 1 seconds.
17.Terminal Strength
JIS-C-6429
Test
BOURNS INDUCTIVE COMPONENTS
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