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B72280B0681K001 Datasheet(PDF) 8 Page - EPCOS |
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B72280B0681K001 Datasheet(HTML) 8 Page - EPCOS |
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8 / 20 page  8 11/07 Please read Cautions and warnings and Important notes at the end of this document. Note: UCT = Upper category temperature LCT = Lower category temperature Reliability data Test Test methods/conditions Requirement Varistor voltage The voltage between two terminals with the specified measuring current applied is called Vv (1 mADC @ 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. Max. DC operating voltage The maximum allowable DC operating voltage VDC at UCT +5/–0 °C is applied for 1000 ±48 h. The leakage current Ileak (t) during test is recorded. Then the specimen shall be stored at room temperature and normal humidity for 1 to 2 h. Thereafter, the change of Vv shall be measured. Ileak (t = 1000 h) ≤ Ileak (t = 0 h) |∆V/V (1 mA)| ≤10% Surge current derating, 8/20 µs 10 surge currents (8/20 µs), unipolar, interval ≥60 s, amplitude correspond- ing to derating curve for 10 impulses at 20 µs |∆V/V (1 mA)| ≤10% (measured in direction of surge current) No visible damage Fast temperature cycling IEC 60068-2-14, test Na, LCT/UCT, dwell time 120 min, 5 cycles |∆V/V (1 mA)| ≤10% No visible damage Damp heat, steady state IEC 60068-2-78 The specimen shall be subjected to 40 ±2 °C, 90 to 95% r. H. for 56 ±2 days with 10% of the maximum continuous DC operating voltage VDC. Then stored at room temperature and normal humidity for 1 to 2 h. Thereafter, the change of Vv shall be measured. |∆V/V (1 mA)| ≤10% HighE series Block varistors |
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