Surface-Mount Ceramic Multilayer Capacitors
3. Preconditioning, class 2 only:
150 +0/-10 °C /1 hour, then keep for
24 ± 1 hour at room temp
4. Initial measure:
Spec: refer initial spec C, D, IR
5. Damp heat test:
500 ± 12 hours at 40 ±2 °C;
90 to 95% R.H.
6. Recovery:
Class 1: 6 to 24 hours
Class 2: 24 ± 2 hours
7. Final measure: C, D, IR
P.S. If the capacitance value is less than the
minimum value permitted, then after the other
measurements have been made the capacitor shall
be precondition according to “IEC 60384 4.1” and
then the requirement shall be met.
No visual damage after recovery
∆C/C
Class 1:
NP0: within ± 2% or 1 pF, whichever is greater
Class2:
X7R: ± 15%
D.F.
Class 1:
NP0: ≤ 2 x specified value
Class2:
X7R: ≥ 25 V: ≤ 5%
Rins
Class 1:
NP0: ≥ 2,500 MΩ or Rins x Cr ≥ 25s whichever
is less
Class2:
X7R: ≥ 500 MΩ or Rins x Cr ≥ 25s whichever is
less
1. Preconditioning, class 2 only:
150 +0/-10 °C /1 hour, then keep for
24 ± 1 hour at room temp
2. Initial measure:
Spec: refer initial spec C, D, IR
3. Endurance test:
Temperature: NP0/X7R: 125 °C
Specified stress voltage applied for 1,000 hours:
4. High voltage series follows with below stress
condition:
Applied 2.0 x Ur for 100 V series
Applied 1.5 x Ur for 200/250 V series
Applied 1.3 x Ur for 500 V, 630 V series
Applied 1.2 x Ur for 1 KV, 2 KV, 3 KV series
5. Recovery time: 24 ± 2 hours
6. Final measure: C, D, IR
P.S. If the capacitance value is less than the
minimum value permitted, then after the other
measurements have been made the capacitor shall
be precondition according to “IEC 60384 4.1” and
then the requirement shall be met.
∆C/C
Class1:
NP0: within ± 2% or 1 pF, whichever is greater
Class2:
X7R: ± 15%
D.F.
Class1:
NP0: ≤ 2 x specified value
Class2:
X7R: ≥ 25 V: ≤ 5%
Rins
Class1:
NP0: ≥ 4,000 MΩ or
Rins x Cr ≥ 40s whichever is less
Class2:
X7R: ≥ 1,000 MΩ or
Rins x Cr ≥ 50s whichever is less
Specified stress voltage applied for 1~5 seconds
Ur ≤ 100 V: series applied 2.5 Ur
100 V < Ur ≤ 200 V series applied
(1.5 Ur + 100)
200 V < Ur ≤ 500 V series applied
(1.3 Ur + 100)
Ur > 500 V: 1.3 Ur
Ur ≧ 1000 V: 1.2 Ur
Charge/Discharge current is less than 50 mA
No breakdown or flashover