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Leaded varistors
AdvanceD-MP, S14 series
Reliability data
B722*
Test
Test methods/conditions
Requirement
Varistor voltage
The voltage between two terminals with To meet the specified value
the specified measuring current applied
is called V V (1 mA DC @ 0.2 ... 2 s).
Clamping voltage
Endurance at upper
category temperature
Surge current derating,
8/20 μ s
Surge current derating,
The maximum voltage between two
terminals with the specified standard
impulse current (8/20 μs) applied.
1000 h at UCT
After having continuously applied the
maximum allowable AC voltage at UCT
± 2 ° C for 1000 h, the specimen shall be
stored at room temperature and normal
humidity for 1 to 2 h.
Thereafter, the change of V V shall be
measured.
10 surge currents (8/20 μ s), unipolar,
interval 30 s, amplitude corresponding
to derating curve for 10 impulses at
20 μ s
10 surge currents (2 ms), unipolar,
To meet the specified value
| ? V/V (1 mA)| ≤ 10%
| ? V/V (1 mA)| ≤ 10%
(measured in direction of
surge current)
No visible damage
| ? V/V (1 mA)| ≤ 10%
2 ms
interval 120 s, amplitude corresponding (measured in direction of
to derating curve for 10 impulses at
2 ms
surge current)
No visible damage
Electric strength
IEC 61051-1, test 4.9.2
Metal balls method, 2500 V RMS , 60 s
The varistor is placed in a container
holding 1.6 ± 0.2 mm diameter metal
balls such that only the terminations of
the varistor are protruding.
The specified voltage shall be applied
between both terminals of the specimen
connected together and the electrode
inserted between the metal balls.
No breakdown
Please read Cautions and warnings and
Important notes at the end of this document.
Page 5 of 22
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