
MCL, MHL
multilayer ferrite, ceramic inductors
environmental applications (continued)
Performance Characteristics
Parameter
Bending Strength
Appearance: There shall be no physical
or mechanical damage.
Impedance: Relative to initial value
before test ±10%
Board: 90 x 40 x 1.6mm
Bend: 1mm
Time: 5 sec
Mechanical Shock
Appearance: There shall be no physical
or mechanical damage.
Impedance: Relative to initial value
before test ±10%
Force: 50G
Time: 11 msec
There shall be 3 shocks in each of 6 directions
(18 shocks total)
Vibration
Impedance: Relative to initial value ±10%
Only endurance conditioning by sweeping shall
be made. The entire frequency range from
10 - 2,000 Hz, return to 10 Hz in 20 minutes
(this will constitute one cycle).
Amplitude: 15G
The test shall have a 15G peak and shall be
applied for a period of 4 hours (12 cycles) in each
of 3 mutually perpendicular directions (a total of
36 cycles within a total of 12 hours).
Thermal Shock
Appearance: There shall be no physical
or mechanical damage.
Impedance: Relative to initial value ±20%
DCR: The DCR shall not exceed initial specified value.
Testing of the parts will be made at 0 hours, 250
hours and 500 hours. Before testing, the parts shall
be allowed to cool to room temperature for 24 hours.
Step:
Temperature:
Time:
1-start
-40°C ± 2°C
—
2-hold
-40°C ± 2°C
30 minutes ± 5 minutes
3-transfer
—
0.5 minutes maximum
4-hold
±105°C ± 2°C
30 minutes ± 5 minutes
5-transfer
—
0.5 minutes maximum
Steps 1 thru 5 constitute one complete cycle and the
test shall consist of a total of 500 cycles.
Load Humidity
Appearance: There shall be no physical
or mechanical damage.
Impedance: Relative to initial value ±15%
Measurements shall be taken at 0 hours, 250 hours,
500 hours and 1,000 hours and shall meet the
conditions stated above.
Temperature: ±85°C ± 2°C
Relative Humidity: 85%
Time: 1,000 hours total
Apply: 100% rated current
Life Test
Appearance: There shall be no physical
or mechanical damage.
Impedance: Relative to initial value ±15%
Measurements shall be taken at 0 hours, 250 hours,
500 hours and 1,000 hours and shall meet the
conditions stated above.
Temperature: ±85°C ± 2°C
Time: 1,000 hours total
Apply: 100% rated current
Requirement
Test Method
205
KOA Speer Electronics, Inc. 199 Bolivar Drive Bradford, PA 16701 USA 814-362-5536 Fax: 814-362-8883 www.koaspeer.com
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
11/01/03
in
d
u
c
t
o
r
s