MCF18

EMI Filters

Rev.A

7/8

Items

Performance

Heat life

test

Test Method

No.

16

AN

AN

Appearance

Dielectric

loss

tangent

Insulation

resistance

Change

rate from

initial value

Without mechanical damage.

CN

CN

Not less than 1000M

Ω or

50M

Ω µF, whichever is less.

Test temperature : 125

Voltage : Reated voltage x 200%

Test time

: 1000

+48/−0 h

Initial measurements prior to test shall be

made after the voltage pre-conditioning

specified in Remarks (2).

Final measurements shall be made after

the specimens have been left at room

temperature as per Table3.

[Remarks]

Pre-conditioning

If specified in test method of as per 3(Performance and test method), capacitors of CN,

characteristics shall be pre-conditionded as follows.

(1) Thermal pre-conditioning

Prior to initial measurements, specimens shall be conditioned at a temperature of 150 0

/−10

°C

for a period of 1hr., and shall be allowed to stabilize at room temperature for 48

+/−4h

(2) Voltage pre-conditioning

Prior to initial measurements, voltage specified as a test condition shall be applied to specimens

for a period of 1hr., and the specimens shall be allowed to stabilize at room temperature for 48

+/−4h

Within

+/−15%

Within

+/−3.0%

tan

δ 0.3%

<−

<−

tan

δ 200%

initial spec.

Table3

24

+/−2 h

48

+/−4 h

Charac-

teristic

Time

AN

CN