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Vishay BCcomponents

Revision: 30-Jun-2021

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Document Number: 29151

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RELIABILITY INFORMATION

After a test of storage at any temperature within the temperature range, the drift of electrical resistance at 25 °C is always lower

than ± 0.5 %, which represents a temperature drift less than ± 0.1 °C (see here under typical figures for drift after storage during

10 000 h at maximal temperature 125 °C). The same type of stability is also observed in thermal shocks between the two

extreme values of the temperature range. The tests are performed according to IEC 60068-2-2 and 2-14.

Fig. 1 -

R25 °C Drift after Storage at 125 °C for 0603 Case

Fig. 2 - Drift in Storage at 125 °C for 0402 Case

Fig. 3 -

R25 °C Drift in Thermal Shocks -40 °C, 15 min/125 °C, 15 min

10

100

1000

10000

-0.6

-0.5

-0.4

-0.3

-0.2

-0.1

0

0.1

0.2

0.3

0.4

0.5

0.6

0

2000

4000

6000

8000

10 000

Axis Title

Time (h)

Positive threshold

Negative threshold

▬▬▬

Maximum measured drift

▬▬▬

Average measured drift

▬▬▬

Minimum measured drift

10

100

1000

10000

-0.6

-0.5

-0.4

-0.3

-0.2

-0.1

0

0.1

0.2

0.3

0.4

0.5

0.6

0

2000

4000

6000

8000

10 000

Axis Title

Time (h)

Positive threshold

Negative threshold

▬▬▬

Maximum measured drift

▬▬▬

Average measured drift

▬▬▬

Minimum measured drift

10

100

1000

10000

-0.6

-0.5

-0.4

-0.3

-0.2

-0.1

0

0.1

0.2

0.3

0.4

0.5

0.6

0

250

500

750 1000 1250 1500 1750 2000

Axis Title

Number of Cycles

Positive threshold

Negative threshold

▬▬▬

Maximum drift

R

25

▬▬▬

Average drift

R

25

▬▬▬

Minimum drift

R

25