Nemco Electronics Performance Info - Manual (Page 10)

Surface Mount
z Life test Capacitors are subjected to +85°C at rated
voltage and +125°C at 2/3 x rated voltage for 2000 hours
with 3 ohms circuit impedance. The capacitors must meet
the following limits after stabilizing at 25°C.
z Humidity test Capacitors are subjected to damp heat
at steady state +40°C with 95% relative humidity. The
capacitors must meet the following limits after stabilizing at
25°C.
z Thermal shock Capacitors are subjected to 5 cycles of 30
minutes at -55°C followed by 30 minutes at +125°C. The
capacitors must meet the following limits after stabilizing at
25°C.
z Surge Current Capacitors shall withstand 3 consecutive
cycles. The capacitors are charged approximately 4
seconds at rated voltage thru a low circuit resistance of
approximately 1 ohm @ +25°C followed by a discharge to
below 1% of rated voltage. Post test readings must meet
the following criteria:
z Surge Voltage Surge voltages are performed at +25°C,
+85°C and +125°C. Capacitors are subject to 1000 cycles
of 1.3 x rated voltage for 30 seconds followed by a 30
second discharge period. After stabilizing at room
temperature post test readings must meet the following
criteria.
General Performance Information
capacitance change within +/-10% of the initial value
Tan δ (DF) within the initial value
DC leakage current within 125% of the initial value
capacitance change within +/-5% of the initial value
Tan δ (DF) within 125% of the initial value
DC leakage current within 125% of the initial value
capacitance change within +/-5% of the initial value
Tan
δ
(DF) within the initial value
DC leakage current within the initial value
capacitance change less than +/-5% of the initial value
Tan δ (DF) within the initial limit
DC leakage current within the initial limit
capacitance change less than +/-5% of the initial value
Tan
δ
(DF) within the initial limit
DC leakage current within the initial limit