Datasheet > B72210U2551K502

B72210U2551K502

更新时间： 2024-03-03 10:09:49

品牌	Logo	应用领域
东电化 - TDK		/
页数	文件大小	规格书
21页	688K
描述
Max. Operating Voltage [AC]=550Vrms

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B72210U2551K502 数据手册

Leaded varistors, SNF high operating temperature

SNF AdvanceD-MP, SNF10 series

B722*

Reliability data

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

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

|∆V/V (1 mA)| ≤10%

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_Vshall be

measured.

Surge current derating, 10 surge currents (8/20 µs), unipolar,

|∆V/V (1 mA)| ≤10%

8/20 µs

interval 30 s, amplitude corresponding to (measured in direction of

derating curve for 10 impulses at 20 µs surge current)

No visible damage

Surge current derating, 10 surge currents (2 ms), unipolar,

|∆V/V (1 mA)| ≤10%

2 ms

interval 120 s, amplitude corresponding

to derating curve for 10 impulses at 2 ms

(measured in direction of

surge current)

No visible damage

No breakdown

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.

Please read Cautions and warnings and

Important notes at the end of this document.

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