B60 Просмотр технического описания (PDF) - EPCOS AG

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производитель

B60

SIOV metal oxide varistors

EPCOS AG 

Block varistors

HighE series

Reliability data

Test

Test methods/conditions

Requirement

Varistor voltage

Clamping voltage

The voltage between two terminals with To meet the specified value.

the specified measuring current applied

is called Vv (1 mADC @ 0.2 … 2 s).

The maximum voltage between two To meet the specified value.

terminals with the specified standard

impulse current (8/20 µs) applied.

Max. DC operating voltage The maximum allowable DC operating Ileak (t = 1000 h) ≤ Ileak (t = 0 h)

voltage VDC at UCT +5/–0 °C is

applied for 1000 ±48 h.

|∆V/V (1 mA)| ≤10%

Surge current derating,

8/20 µs

Fast temperature cycling

Damp heat, steady state

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.

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

IEC 60068-2-14, test Na, LCT/UCT,

dwell time 120 min, 5 cycles

|∆V/V (1 mA)| ≤10%

No visible damage

IEC 60068-2-78

|∆V/V (1 mA)| ≤10%

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.

Note:

UCT = Upper category temperature

LCT = Lower category temperature

Please read Cautions and warnings and

Important notes at the end of this document.

8 11/07

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