Datasheet

Reliability data
Note: For CU varistors mounted on PCB by reflow soldering.
Test Test methods/conditions Requirement
Varistor voltage The voltage between two terminals with
the specified measuring current applied
is called V
V
(1 mA
DC
@ 0.2 ... 2 s).
To meet the specified value
Clamping voltage The maximum voltage between two
terminals with the specified standard
impulse current (8/20 µs) applied.
To meet the specified value
Endurance at upper
category temperature
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.
|∆V/V (1 mA)| ≤10%
Surge current derating,
8/20 µs
10 surge currents (8/20 µs), unipolar,
interval 30 s, amplitude corresponding
to derating curve for 10 impulses at
20 µs
|∆V/V (1 mA)| ≤10%
(measured in direction of
surge current)
No visible damage
Surge current derating,
2 ms
10 surge currents (2 ms), unipolar,
interval 120 s, amplitude corresponding
to derating curve for 10 impulses at
2 ms
|∆V/V (1 mA)| ≤10%
(measured in direction of
surge current)
No visible damage
SMD varistors (CU types) B726*
Standard series
Page 10 of 23Please read Cautions and warnings and
Important notes at the end of this document.