User Manual

TEST ITEM SPECIFICATIONS TEST CONDITIONS
Humidity Impedance:Within±20% of the initial value. After the samples shall be soldered onto the test
resistance Insulation resistance and DC resistance on circuit board,the test shall be done.
the specification(refer to clause 2-1) Measurement : After placing for 24 hours min.
shall be met.
Temperature : +60±2℃ , Humidity : 90 to 95 %RH
The terminal electrode and the ferrite must Applied voltage : Rated voltage
not damaged. 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 circuit board,the test shall be done.
storage
the specification(refer to clause 2-1) Measurement : After placing for 24 hours min.
shall be met.
Temperature : -40±2℃
The terminal electrode and the ferrite must Testing time : 500±12 hours
not damaged.
Vibration Impedance:Within±20% of the initial value. After the samples shall be soldered onto the test
Insulation resistance and DC resistance on circuit 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±2℃.
More than 75% of the electrode sections
shall be couered with new solder smoothly when
the sample is taken out of the solder bath.
SMB-853025 Page-4/7
MAG.LAYERS