B597 datasheet(7/23 Pages) EPCOS

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PTC thermistors for overcurrent protection and as inrush current limiters

Leaded disks, 260 V up to 1000 V

B597**C0*/ B594**C1*

PPD PTC PD

2022-01-28

Please read Cautions and warnings and

Page 7 of 23

Important notes at the end of this document.

Reliability data for inrush current limiters and overcurrent protection

Test

Standard

Test conditions

Ɩ∆R25/R25Ɩ

Electrical endurance,

cycling

IEC 60738-1

Overcurrent

protection

Inrush current limiters

Room temperature,

IS,max, Vmax

Number of cycles: 100

Room temperature, Vlink,max

applied energy

< Cth

· (Tref − TA)

Number of cycles: 100 000

< 25%

Electrical endurance,

constant

IEC 60738-1

Storage at Vmax and Top,max (at Vmax)

Test duration: 1000 h

< 25%

Damp heat

IEC 60738-1

Temperature of air: +40 °C

Relative humidity of air: 93%

Duration: 56 days

Test according to IEC 60068-2-78

< 10%

Rapid change of

temperature

IEC 60738-1

T1 = Top,min(0 V), T2 = Top,max (0 V)

Number of cycles: 5

Test duration: 30 min

Test according to IEC 60068-2-14, test Na

< 10%

Vibration

IEC 60738-1

Frequency range: 10 to 55 Hz

Displacement amplitude: 0.75 mm

Test duration: 3 × 2 h

Test according to IEC 60068-2-6, test Fc

< 5%

Shock

IEC 60738-1

Acceleration : 500 m/s2

Pulse duration: 11 ms; 6 x 3 pulses

< 5%

Climatic sequence

IEC 60738-1

Dry heat: T = Top,max (0 V)

Test duration: 16 h

Damp heat first cycle

Cold: T = Top,min (0 V)

Test duration: 2 h

Damp heat 5 cycles

Tests performed according to

IEC 60068-2-30

< 10%

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