B25856 datasheet(3/6 Pages) EPCOS

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Cautions and warnings and

09/05

Important notes at the end of this document.

MKV AC, MKV DC Capacitors

LSI Snubbering and Clamping

B25856

Technical data

Standards

IEC 1071-1/2

EN 61071-1/2

VDE 0560 part 120 and 121

Dielectric dissipation factor

tan

δ0

2 x 10–4

Capacitance tolerance

± 10%

Max. repetitive rate

of voltage rise

(dv/dt)max

Max. non-repetitive rate

of voltage rise

(dv/dt)s

Climatic data:

Min. operating temperature

Tmin

– 25

°C

Max. operating temperature

Tmax

+ 85

°C

Average relative humidity

≤ 95%

Failure quota

αFQ(co)

300 failures per 109 component hours

Load duration

tLD(co)

100 000 h

Storage temperature limit

Tstg

≤ 98 mm diameter: – 55/+ 85 °C

≥ 103 mm diameter: – 30/+ 85 °C

IEC climatic category

(IEC 68-1 and 2)

25/085/56

Test A, cold

Test B, dry heat

Test Ca, damp heat, steady state

– 25

°C

+ 85

°C

56 days/40

°C/93 % rel. humidity

Values after test Ca:

Capacitance change

ΔC/C

≤ 1%

Insulation resistance

Rins

CR ≤ 1 μF: ≥ 10000 MΩ

Self-discharge time constant

τ =Rins x C

CR > 1 μF: ≥ 10000 s

Dissipation factor change

Δtan δ≤ 1 x 10–4

Test data:

Voltage test between terminals

DC test voltage

VTT

1.5 x VR, 10 s

(VR = DC)

1.75 x VR, 10 s

(VR = AC)

AC test voltage (rms value)

VTT

1.25 x VR, 50 Hz, 10 s

(VR = AC)

Insulation resistance

Rins

CR ≤ 1 μF: ≥ 10000 MΩ

Self-discharge time constant

τ =Rins x C CR > 1 μF: ≥ 10000 s

Dissipation factor (50 Hz)

tan

δ≤ 3 x 10–4

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