Mag Layers USA MCM-9070M - Manual (Page 4)

(4) RELIABILITY TEST METHOD
MECHANICAL
TEST ITEM SPECIFICATION TEST DETAILS
Humidity Impedance:Within ±20% of the initial value. After the samples shall be soldered onto the test circuit
resistance Insulation resistance and DC resistance on the board,the test shall be done.
specification(refer to clause 2-1) shall be met. Measurement : After placing for 24 hours min.
The terminal electrode and the ferrite must not Temperature : +60 ±2℃ , Humidity : 90 to 95 %RH
damaged. Applied voltage : Rated voltage
Applied current : Rated current
Testing time : 500 ±12 hours
Thermal shock Impedance:Within ±20% of the initial value.
Insulation resistance and DC resistance on the
specification(refer to clause 2-1) shall be met.
The terminal electrode and the ferrite must
not damaged.
Low
Impedance:Within ±20% of the initial value. After the samples shall be soldered onto the test
temperature
Insulation resistance and DC resistance on the circuit board,the test shall be done.
storage
specification(refer to clause 2-1) shall be met. Measurement : After placing for 24 hours min.
The terminal electrode and the ferrite must Temperature : -40 ±2℃
not damaged. Testing time : 500 ±12 hours
Vibration Impedance:Within ±20% of the initial value. After the samples shall be soldered onto the test circuit
Insulation resistance and DC resistance on board,the test shall be done.
the specification(refer to clause 2-1) Frequency : 10 to 55 Hz
shall be met. Amplitude : 1.52 mm
The terminal electrode and the ferrite must Dimension and times : X ,Y and Z directions
not damaged. for 2 hours each.
Solderability
New solder More than 75% Flux (rosin, isopropyl alcohol{JIS-K-1522}) shall be coated
over the whole of the sample before hard, the sample shall
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 75% of the
electrode sections shall be couered
with new solder smoothly when the sample is taken out
of the solder bath.
Page 4/8 MCM-9070M-SERIES
M A G . L A Y E R S